diff --git a/.clang-format b/.clang-format
index 2ffd69a..196ca31 100644
--- a/.clang-format
+++ b/.clang-format
@@ -107,10 +107,13 @@
   - 'css_for_each_descendant_post'
   - 'css_for_each_descendant_pre'
   - 'device_for_each_child_node'
+  - 'dma_fence_chain_for_each'
   - 'drm_atomic_crtc_for_each_plane'
   - 'drm_atomic_crtc_state_for_each_plane'
   - 'drm_atomic_crtc_state_for_each_plane_state'
   - 'drm_atomic_for_each_plane_damage'
+  - 'drm_client_for_each_connector_iter'
+  - 'drm_client_for_each_modeset'
   - 'drm_connector_for_each_possible_encoder'
   - 'drm_for_each_connector_iter'
   - 'drm_for_each_crtc'
@@ -126,6 +129,7 @@
   - 'drm_mm_for_each_node_in_range'
   - 'drm_mm_for_each_node_safe'
   - 'flow_action_for_each'
+  - 'for_each_active_dev_scope'
   - 'for_each_active_drhd_unit'
   - 'for_each_active_iommu'
   - 'for_each_available_child_of_node'
@@ -153,6 +157,8 @@
   - 'for_each_cpu_not'
   - 'for_each_cpu_wrap'
   - 'for_each_dev_addr'
+  - 'for_each_dev_scope'
+  - 'for_each_displayid_db'
   - 'for_each_dma_cap_mask'
   - 'for_each_dpcm_be'
   - 'for_each_dpcm_be_rollback'
@@ -169,6 +175,8 @@
   - 'for_each_evictable_lru'
   - 'for_each_fib6_node_rt_rcu'
   - 'for_each_fib6_walker_rt'
+  - 'for_each_free_mem_pfn_range_in_zone'
+  - 'for_each_free_mem_pfn_range_in_zone_from'
   - 'for_each_free_mem_range'
   - 'for_each_free_mem_range_reverse'
   - 'for_each_func_rsrc'
@@ -178,6 +186,7 @@
   - 'for_each_ip_tunnel_rcu'
   - 'for_each_irq_nr'
   - 'for_each_link_codecs'
+  - 'for_each_link_platforms'
   - 'for_each_lru'
   - 'for_each_matching_node'
   - 'for_each_matching_node_and_match'
@@ -302,7 +311,10 @@
   - 'ide_port_for_each_present_dev'
   - 'idr_for_each_entry'
   - 'idr_for_each_entry_continue'
+  - 'idr_for_each_entry_continue_ul'
   - 'idr_for_each_entry_ul'
+  - 'in_dev_for_each_ifa_rcu'
+  - 'in_dev_for_each_ifa_rtnl'
   - 'inet_bind_bucket_for_each'
   - 'inet_lhash2_for_each_icsk_rcu'
   - 'key_for_each'
@@ -343,8 +355,6 @@
   - 'media_device_for_each_intf'
   - 'media_device_for_each_link'
   - 'media_device_for_each_pad'
-  - 'mp_bvec_for_each_page'
-  - 'mp_bvec_for_each_segment'
   - 'nanddev_io_for_each_page'
   - 'netdev_for_each_lower_dev'
   - 'netdev_for_each_lower_private'
@@ -381,18 +391,19 @@
   - 'radix_tree_for_each_slot'
   - 'radix_tree_for_each_tagged'
   - 'rbtree_postorder_for_each_entry_safe'
+  - 'rdma_for_each_block'
   - 'rdma_for_each_port'
   - 'resource_list_for_each_entry'
   - 'resource_list_for_each_entry_safe'
   - 'rhl_for_each_entry_rcu'
   - 'rhl_for_each_rcu'
   - 'rht_for_each'
-  - 'rht_for_each_from'
   - 'rht_for_each_entry'
   - 'rht_for_each_entry_from'
   - 'rht_for_each_entry_rcu'
   - 'rht_for_each_entry_rcu_from'
   - 'rht_for_each_entry_safe'
+  - 'rht_for_each_from'
   - 'rht_for_each_rcu'
   - 'rht_for_each_rcu_from'
   - '__rq_for_each_bio'
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8fc4de0..7a84c9f 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -101,21 +101,8 @@
 	}
 }
 
-static bool tm_active_with_fp(struct task_struct *tsk)
-{
-	return MSR_TM_ACTIVE(tsk->thread.regs->msr) &&
-		(tsk->thread.ckpt_regs.msr & MSR_FP);
-}
-
-static bool tm_active_with_altivec(struct task_struct *tsk)
-{
-	return MSR_TM_ACTIVE(tsk->thread.regs->msr) &&
-		(tsk->thread.ckpt_regs.msr & MSR_VEC);
-}
 #else
 static inline void check_if_tm_restore_required(struct task_struct *tsk) { }
-static inline bool tm_active_with_fp(struct task_struct *tsk) { return false; }
-static inline bool tm_active_with_altivec(struct task_struct *tsk) { return false; }
 #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
 
 bool strict_msr_control;
@@ -252,7 +239,7 @@
 
 static int restore_fp(struct task_struct *tsk)
 {
-	if (tsk->thread.load_fp || tm_active_with_fp(tsk)) {
+	if (tsk->thread.load_fp) {
 		load_fp_state(&current->thread.fp_state);
 		current->thread.load_fp++;
 		return 1;
@@ -334,8 +321,7 @@
 
 static int restore_altivec(struct task_struct *tsk)
 {
-	if (cpu_has_feature(CPU_FTR_ALTIVEC) &&
-		(tsk->thread.load_vec || tm_active_with_altivec(tsk))) {
+	if (cpu_has_feature(CPU_FTR_ALTIVEC) && (tsk->thread.load_vec)) {
 		load_vr_state(&tsk->thread.vr_state);
 		tsk->thread.used_vr = 1;
 		tsk->thread.load_vec++;
@@ -497,13 +483,14 @@
 	if (!tsk->thread.regs)
 		return;
 
+	check_if_tm_restore_required(tsk);
+
 	usermsr = tsk->thread.regs->msr;
 
 	if ((usermsr & msr_all_available) == 0)
 		return;
 
 	msr_check_and_set(msr_all_available);
-	check_if_tm_restore_required(tsk);
 
 	WARN_ON((usermsr & MSR_VSX) && !((usermsr & MSR_FP) && (usermsr & MSR_VEC)));
 
diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c
index d4acf6f..bf60983 100644
--- a/arch/powerpc/mm/nohash/tlb.c
+++ b/arch/powerpc/mm/nohash/tlb.c
@@ -630,7 +630,6 @@
 #ifdef CONFIG_PPC_FSL_BOOK3E
 	if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
 		unsigned int num_cams;
-		int __maybe_unused cpu = smp_processor_id();
 		bool map = true;
 
 		/* use a quarter of the TLBCAM for bolted linear map */
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c
index e65d7fe..5208ba4 100644
--- a/arch/x86/hyperv/mmu.c
+++ b/arch/x86/hyperv/mmu.c
@@ -37,12 +37,14 @@
 		 * Lower 12 bits encode the number of additional
 		 * pages to flush (in addition to the 'cur' page).
 		 */
-		if (diff >= HV_TLB_FLUSH_UNIT)
+		if (diff >= HV_TLB_FLUSH_UNIT) {
 			gva_list[gva_n] |= ~PAGE_MASK;
-		else if (diff)
+			cur += HV_TLB_FLUSH_UNIT;
+		}  else if (diff) {
 			gva_list[gva_n] |= (diff - 1) >> PAGE_SHIFT;
+			cur = end;
+		}
 
-		cur += HV_TLB_FLUSH_UNIT;
 		gva_n++;
 
 	} while (cur < end);
diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h
index 9e5f3c7..981fe92 100644
--- a/arch/x86/include/asm/bootparam_utils.h
+++ b/arch/x86/include/asm/bootparam_utils.h
@@ -70,6 +70,7 @@
 			BOOT_PARAM_PRESERVE(eddbuf_entries),
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries),
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer),
+			BOOT_PARAM_PRESERVE(secure_boot),
 			BOOT_PARAM_PRESERVE(hdr),
 			BOOT_PARAM_PRESERVE(e820_table),
 			BOOT_PARAM_PRESERVE(eddbuf),
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 9c44353..35c225e 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -444,8 +444,10 @@
 ({									\
 	int __gu_err;							\
 	__inttype(*(ptr)) __gu_val;					\
+	__typeof__(ptr) __gu_ptr = (ptr);				\
+	__typeof__(size) __gu_size = (size);				\
 	__uaccess_begin_nospec();					\
-	__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT);	\
+	__get_user_size(__gu_val, __gu_ptr, __gu_size, __gu_err, -EFAULT);	\
 	__uaccess_end();						\
 	(x) = (__force __typeof__(*(ptr)))__gu_val;			\
 	__builtin_expect(__gu_err, 0);					\
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index b0369e6..0d23bf72 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1454,6 +1454,7 @@
 }
 
 static int drm_mode_parse_cmdline_extra(const char *str, int length,
+					bool freestanding,
 					const struct drm_connector *connector,
 					struct drm_cmdline_mode *mode)
 {
@@ -1462,9 +1463,15 @@
 	for (i = 0; i < length; i++) {
 		switch (str[i]) {
 		case 'i':
+			if (freestanding)
+				return -EINVAL;
+
 			mode->interlace = true;
 			break;
 		case 'm':
+			if (freestanding)
+				return -EINVAL;
+
 			mode->margins = true;
 			break;
 		case 'D':
@@ -1542,6 +1549,7 @@
 			if (extras) {
 				int ret = drm_mode_parse_cmdline_extra(end_ptr + i,
 								       1,
+								       false,
 								       connector,
 								       mode);
 				if (ret)
@@ -1669,6 +1677,22 @@
 	return 0;
 }
 
+static const char *drm_named_modes_whitelist[] = {
+	"NTSC",
+	"PAL",
+};
+
+static bool drm_named_mode_is_in_whitelist(const char *mode, unsigned int size)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(drm_named_modes_whitelist); i++)
+		if (!strncmp(mode, drm_named_modes_whitelist[i], size))
+			return true;
+
+	return false;
+}
+
 /**
  * drm_mode_parse_command_line_for_connector - parse command line modeline for connector
  * @mode_option: optional per connector mode option
@@ -1725,16 +1749,30 @@
 	 * bunch of things:
 	 *   - We need to make sure that the first character (which
 	 *     would be our resolution in X) is a digit.
-	 *   - However, if the X resolution is missing, then we end up
-	 *     with something like x<yres>, with our first character
-	 *     being an alpha-numerical character, which would be
-	 *     considered a named mode.
+	 *   - If not, then it's either a named mode or a force on/off.
+	 *     To distinguish between the two, we need to run the
+	 *     extra parsing function, and if not, then we consider it
+	 *     a named mode.
 	 *
 	 * If this isn't enough, we should add more heuristics here,
 	 * and matching unit-tests.
 	 */
-	if (!isdigit(name[0]) && name[0] != 'x')
+	if (!isdigit(name[0]) && name[0] != 'x') {
+		unsigned int namelen = strlen(name);
+
+		/*
+		 * Only the force on/off options can be in that case,
+		 * and they all take a single character.
+		 */
+		if (namelen == 1) {
+			ret = drm_mode_parse_cmdline_extra(name, namelen, true,
+							   connector, mode);
+			if (!ret)
+				return true;
+		}
+
 		named_mode = true;
+	}
 
 	/* Try to locate the bpp and refresh specifiers, if any */
 	bpp_ptr = strchr(name, '-');
@@ -1772,6 +1810,10 @@
 	if (named_mode) {
 		if (mode_end + 1 > DRM_DISPLAY_MODE_LEN)
 			return false;
+
+		if (!drm_named_mode_is_in_whitelist(name, mode_end))
+			return false;
+
 		strscpy(mode->name, name, mode_end + 1);
 	} else {
 		ret = drm_mode_parse_cmdline_res_mode(name, mode_end,
@@ -1811,7 +1853,7 @@
 	    extra_ptr != options_ptr) {
 		int len = strlen(name) - (extra_ptr - name);
 
-		ret = drm_mode_parse_cmdline_extra(extra_ptr, len,
+		ret = drm_mode_parse_cmdline_extra(extra_ptr, len, false,
 						   connector, mode);
 		if (ret)
 			return false;
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c
index e9f9e9f..6381652 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.c
@@ -656,10 +656,9 @@
 		return ret;
 	}
 
-	if (panel) {
+	if (panel)
 		bridge = devm_drm_panel_bridge_add(dev, panel,
-						   DRM_MODE_CONNECTOR_Unknown);
-	}
+						   DRM_MODE_CONNECTOR_DPI);
 
 	priv->dma_hwdesc = dma_alloc_coherent(dev, sizeof(*priv->dma_hwdesc),
 					      &priv->dma_hwdesc_phys,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
index 84a2f24..4695f1c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
@@ -190,6 +190,9 @@
 MODULE_FIRMWARE("nvidia/gp102/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp102/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp104/acr/ucode_load.bin");
@@ -210,6 +213,9 @@
 MODULE_FIRMWARE("nvidia/gp104/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp104/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp106/acr/ucode_load.bin");
@@ -230,6 +236,9 @@
 MODULE_FIRMWARE("nvidia/gp106/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp106/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/bl.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/unload_bl.bin");
 MODULE_FIRMWARE("nvidia/gp107/acr/ucode_load.bin");
@@ -250,3 +259,6 @@
 MODULE_FIRMWARE("nvidia/gp107/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/sig.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/desc-1.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/image-1.bin");
+MODULE_FIRMWARE("nvidia/gp107/sec2/sig-1.bin");
diff --git a/drivers/gpu/drm/selftests/drm_cmdline_selftests.h b/drivers/gpu/drm/selftests/drm_cmdline_selftests.h
index b45824e..6d61a0e 100644
--- a/drivers/gpu/drm/selftests/drm_cmdline_selftests.h
+++ b/drivers/gpu/drm/selftests/drm_cmdline_selftests.h
@@ -9,6 +9,13 @@
 
 #define cmdline_test(test)	selftest(test, test)
 
+cmdline_test(drm_cmdline_test_force_d_only)
+cmdline_test(drm_cmdline_test_force_D_only_dvi)
+cmdline_test(drm_cmdline_test_force_D_only_hdmi)
+cmdline_test(drm_cmdline_test_force_D_only_not_digital)
+cmdline_test(drm_cmdline_test_force_e_only)
+cmdline_test(drm_cmdline_test_margin_only)
+cmdline_test(drm_cmdline_test_interlace_only)
 cmdline_test(drm_cmdline_test_res)
 cmdline_test(drm_cmdline_test_res_missing_x)
 cmdline_test(drm_cmdline_test_res_missing_y)
diff --git a/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c b/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
index 14c96ed..013de9d 100644
--- a/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
+++ b/drivers/gpu/drm/selftests/test-drm_cmdline_parser.c
@@ -17,6 +17,136 @@
 
 static const struct drm_connector no_connector = {};
 
+static int drm_cmdline_test_force_e_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("e",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON);
+
+	return 0;
+}
+
+static int drm_cmdline_test_force_D_only_not_digital(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON);
+
+	return 0;
+}
+
+static const struct drm_connector connector_hdmi = {
+	.connector_type	= DRM_MODE_CONNECTOR_HDMIB,
+};
+
+static int drm_cmdline_test_force_D_only_hdmi(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &connector_hdmi,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON_DIGITAL);
+
+	return 0;
+}
+
+static const struct drm_connector connector_dvi = {
+	.connector_type	= DRM_MODE_CONNECTOR_DVII,
+};
+
+static int drm_cmdline_test_force_D_only_dvi(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("D",
+							   &connector_dvi,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_ON_DIGITAL);
+
+	return 0;
+}
+
+static int drm_cmdline_test_force_d_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(!drm_mode_parse_command_line_for_connector("d",
+							   &no_connector,
+							   &mode));
+	FAIL_ON(mode.specified);
+	FAIL_ON(mode.refresh_specified);
+	FAIL_ON(mode.bpp_specified);
+
+	FAIL_ON(mode.rb);
+	FAIL_ON(mode.cvt);
+	FAIL_ON(mode.interlace);
+	FAIL_ON(mode.margins);
+	FAIL_ON(mode.force != DRM_FORCE_OFF);
+
+	return 0;
+}
+
+static int drm_cmdline_test_margin_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(drm_mode_parse_command_line_for_connector("m",
+							  &no_connector,
+							  &mode));
+
+	return 0;
+}
+
+static int drm_cmdline_test_interlace_only(void *ignored)
+{
+	struct drm_cmdline_mode mode = { };
+
+	FAIL_ON(drm_mode_parse_command_line_for_connector("i",
+							  &no_connector,
+							  &mode));
+
+	return 0;
+}
+
 static int drm_cmdline_test_res(void *ignored)
 {
 	struct drm_cmdline_mode mode = { };
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
index 59e9d05..0af048d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
@@ -353,7 +353,7 @@
 				     !!(HIGH_WORD(ecx) & MESSAGE_STATUS_HB));
 		if ((HIGH_WORD(ebx) & MESSAGE_STATUS_SUCCESS) == 0) {
 			kfree(reply);
-
+			reply = NULL;
 			if ((HIGH_WORD(ebx) & MESSAGE_STATUS_CPT) != 0) {
 				/* A checkpoint occurred. Retry. */
 				continue;
@@ -377,7 +377,7 @@
 
 		if ((HIGH_WORD(ecx) & MESSAGE_STATUS_SUCCESS) == 0) {
 			kfree(reply);
-
+			reply = NULL;
 			if ((HIGH_WORD(ecx) & MESSAGE_STATUS_CPT) != 0) {
 				/* A checkpoint occurred. Retry. */
 				continue;
@@ -389,10 +389,8 @@
 		break;
 	}
 
-	if (retries == RETRIES) {
-		kfree(reply);
+	if (!reply)
 		return -EINVAL;
-	}
 
 	*msg_len = reply_len;
 	*msg     = reply;
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index b607a92..61de819 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1143,6 +1143,17 @@
 	iommu_completion_wait(iommu);
 }
 
+static void amd_iommu_flush_tlb_domid(struct amd_iommu *iommu, u32 dom_id)
+{
+	struct iommu_cmd cmd;
+
+	build_inv_iommu_pages(&cmd, 0, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
+			      dom_id, 1);
+	iommu_queue_command(iommu, &cmd);
+
+	iommu_completion_wait(iommu);
+}
+
 static void amd_iommu_flush_all(struct amd_iommu *iommu)
 {
 	struct iommu_cmd cmd;
@@ -1424,18 +1435,21 @@
  * another level increases the size of the address space by 9 bits to a size up
  * to 64 bits.
  */
-static bool increase_address_space(struct protection_domain *domain,
+static void increase_address_space(struct protection_domain *domain,
 				   gfp_t gfp)
 {
+	unsigned long flags;
 	u64 *pte;
 
-	if (domain->mode == PAGE_MODE_6_LEVEL)
+	spin_lock_irqsave(&domain->lock, flags);
+
+	if (WARN_ON_ONCE(domain->mode == PAGE_MODE_6_LEVEL))
 		/* address space already 64 bit large */
-		return false;
+		goto out;
 
 	pte = (void *)get_zeroed_page(gfp);
 	if (!pte)
-		return false;
+		goto out;
 
 	*pte             = PM_LEVEL_PDE(domain->mode,
 					iommu_virt_to_phys(domain->pt_root));
@@ -1443,7 +1457,10 @@
 	domain->mode    += 1;
 	domain->updated  = true;
 
-	return true;
+out:
+	spin_unlock_irqrestore(&domain->lock, flags);
+
+	return;
 }
 
 static u64 *alloc_pte(struct protection_domain *domain,
@@ -1873,6 +1890,7 @@
 {
 	u64 pte_root = 0;
 	u64 flags = 0;
+	u32 old_domid;
 
 	if (domain->mode != PAGE_MODE_NONE)
 		pte_root = iommu_virt_to_phys(domain->pt_root);
@@ -1922,8 +1940,20 @@
 	flags &= ~DEV_DOMID_MASK;
 	flags |= domain->id;
 
+	old_domid = amd_iommu_dev_table[devid].data[1] & DEV_DOMID_MASK;
 	amd_iommu_dev_table[devid].data[1]  = flags;
 	amd_iommu_dev_table[devid].data[0]  = pte_root;
+
+	/*
+	 * A kdump kernel might be replacing a domain ID that was copied from
+	 * the previous kernel--if so, it needs to flush the translation cache
+	 * entries for the old domain ID that is being overwritten
+	 */
+	if (old_domid) {
+		struct amd_iommu *iommu = amd_iommu_rlookup_table[devid];
+
+		amd_iommu_flush_tlb_domid(iommu, old_domid);
+	}
 }
 
 static void clear_dte_entry(u16 devid)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 12d094d..c4e0e4a9 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -339,6 +339,8 @@
 static void domain_remove_dev_info(struct dmar_domain *domain);
 static void dmar_remove_one_dev_info(struct device *dev);
 static void __dmar_remove_one_dev_info(struct device_domain_info *info);
+static void domain_context_clear(struct intel_iommu *iommu,
+				 struct device *dev);
 static int domain_detach_iommu(struct dmar_domain *domain,
 			       struct intel_iommu *iommu);
 static bool device_is_rmrr_locked(struct device *dev);
@@ -2105,9 +2107,26 @@
 	return ret;
 }
 
+struct domain_context_mapping_data {
+	struct dmar_domain *domain;
+	struct intel_iommu *iommu;
+	struct pasid_table *table;
+};
+
+static int domain_context_mapping_cb(struct pci_dev *pdev,
+				     u16 alias, void *opaque)
+{
+	struct domain_context_mapping_data *data = opaque;
+
+	return domain_context_mapping_one(data->domain, data->iommu,
+					  data->table, PCI_BUS_NUM(alias),
+					  alias & 0xff);
+}
+
 static int
 domain_context_mapping(struct dmar_domain *domain, struct device *dev)
 {
+	struct domain_context_mapping_data data;
 	struct pasid_table *table;
 	struct intel_iommu *iommu;
 	u8 bus, devfn;
@@ -2117,7 +2136,17 @@
 		return -ENODEV;
 
 	table = intel_pasid_get_table(dev);
-	return domain_context_mapping_one(domain, iommu, table, bus, devfn);
+
+	if (!dev_is_pci(dev))
+		return domain_context_mapping_one(domain, iommu, table,
+						  bus, devfn);
+
+	data.domain = domain;
+	data.iommu = iommu;
+	data.table = table;
+
+	return pci_for_each_dma_alias(to_pci_dev(dev),
+				      &domain_context_mapping_cb, &data);
 }
 
 static int domain_context_mapped_cb(struct pci_dev *pdev,
@@ -4759,6 +4788,28 @@
 	return ret;
 }
 
+static int domain_context_clear_one_cb(struct pci_dev *pdev, u16 alias, void *opaque)
+{
+	struct intel_iommu *iommu = opaque;
+
+	domain_context_clear_one(iommu, PCI_BUS_NUM(alias), alias & 0xff);
+	return 0;
+}
+
+/*
+ * NB - intel-iommu lacks any sort of reference counting for the users of
+ * dependent devices.  If multiple endpoints have intersecting dependent
+ * devices, unbinding the driver from any one of them will possibly leave
+ * the others unable to operate.
+ */
+static void domain_context_clear(struct intel_iommu *iommu, struct device *dev)
+{
+	if (!iommu || !dev || !dev_is_pci(dev))
+		return;
+
+	pci_for_each_dma_alias(to_pci_dev(dev), &domain_context_clear_one_cb, iommu);
+}
+
 static void __dmar_remove_one_dev_info(struct device_domain_info *info)
 {
 	struct dmar_domain *domain;
@@ -4779,7 +4830,7 @@
 					PASID_RID2PASID);
 
 		iommu_disable_dev_iotlb(info);
-		domain_context_clear_one(iommu, info->bus, info->devfn);
+		domain_context_clear(iommu, info->dev);
 		intel_pasid_free_table(info->dev);
 	}
 
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 780de0c..9b15913 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -100,24 +100,19 @@
 }
 
 static void intel_flush_svm_range_dev (struct intel_svm *svm, struct intel_svm_dev *sdev,
-				       unsigned long address, unsigned long pages, int ih, int gl)
+				unsigned long address, unsigned long pages, int ih)
 {
 	struct qi_desc desc;
 
-	if (pages == -1) {
-		/* For global kernel pages we have to flush them in *all* PASIDs
-		 * because that's the only option the hardware gives us. Despite
-		 * the fact that they are actually only accessible through one. */
-		if (gl)
-			desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
-					QI_EIOTLB_DID(sdev->did) |
-					QI_EIOTLB_GRAN(QI_GRAN_ALL_ALL) |
-					QI_EIOTLB_TYPE;
-		else
-			desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
-					QI_EIOTLB_DID(sdev->did) |
-					QI_EIOTLB_GRAN(QI_GRAN_NONG_PASID) |
-					QI_EIOTLB_TYPE;
+	/*
+	 * Do PASID granu IOTLB invalidation if page selective capability is
+	 * not available.
+	 */
+	if (pages == -1 || !cap_pgsel_inv(svm->iommu->cap)) {
+		desc.qw0 = QI_EIOTLB_PASID(svm->pasid) |
+			QI_EIOTLB_DID(sdev->did) |
+			QI_EIOTLB_GRAN(QI_GRAN_NONG_PASID) |
+			QI_EIOTLB_TYPE;
 		desc.qw1 = 0;
 	} else {
 		int mask = ilog2(__roundup_pow_of_two(pages));
@@ -127,7 +122,6 @@
 				QI_EIOTLB_GRAN(QI_GRAN_PSI_PASID) |
 				QI_EIOTLB_TYPE;
 		desc.qw1 = QI_EIOTLB_ADDR(address) |
-				QI_EIOTLB_GL(gl) |
 				QI_EIOTLB_IH(ih) |
 				QI_EIOTLB_AM(mask);
 	}
@@ -162,13 +156,13 @@
 }
 
 static void intel_flush_svm_range(struct intel_svm *svm, unsigned long address,
-				  unsigned long pages, int ih, int gl)
+				unsigned long pages, int ih)
 {
 	struct intel_svm_dev *sdev;
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(sdev, &svm->devs, list)
-		intel_flush_svm_range_dev(svm, sdev, address, pages, ih, gl);
+		intel_flush_svm_range_dev(svm, sdev, address, pages, ih);
 	rcu_read_unlock();
 }
 
@@ -180,7 +174,7 @@
 	struct intel_svm *svm = container_of(mn, struct intel_svm, notifier);
 
 	intel_flush_svm_range(svm, start,
-			      (end - start + PAGE_SIZE - 1) >> VTD_PAGE_SHIFT, 0, 0);
+			      (end - start + PAGE_SIZE - 1) >> VTD_PAGE_SHIFT, 0);
 }
 
 static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm)
@@ -203,7 +197,7 @@
 	rcu_read_lock();
 	list_for_each_entry_rcu(sdev, &svm->devs, list) {
 		intel_pasid_tear_down_entry(svm->iommu, sdev->dev, svm->pasid);
-		intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm);
+		intel_flush_svm_range_dev(svm, sdev, 0, -1, 0);
 	}
 	rcu_read_unlock();
 
@@ -425,7 +419,7 @@
 				 * large and has to be physically contiguous. So it's
 				 * hard to be as defensive as we might like. */
 				intel_pasid_tear_down_entry(iommu, dev, svm->pasid);
-				intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm);
+				intel_flush_svm_range_dev(svm, sdev, 0, -1, 0);
 				kfree_rcu(sdev, rcu);
 
 				if (list_empty(&svm->devs)) {
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 74e4364..09113b9 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -564,7 +564,7 @@
 	if (index == EXT_CSD_SANITIZE_START)
 		cmd.sanitize_busy = true;
 
-	err = mmc_wait_for_cmd(host, &cmd, 0);
+	err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
 	if (err)
 		goto out;
 
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 4f3de0a..ba98e09 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1331,7 +1331,7 @@
 		}
 	}
 
-	if (rq->vq->num_free > virtqueue_get_vring_size(rq->vq) / 2) {
+	if (rq->vq->num_free > min((unsigned int)budget, virtqueue_get_vring_size(rq->vq)) / 2) {
 		if (!try_fill_recv(vi, rq, GFP_ATOMIC))
 			schedule_delayed_work(&vi->refill, 0);
 	}
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index 9e90e96..7804869 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c
@@ -22,6 +22,12 @@
  * Using this limit prevents one virtqueue from starving others. */
 #define VHOST_TEST_WEIGHT 0x80000
 
+/* Max number of packets transferred before requeueing the job.
+ * Using this limit prevents one virtqueue from starving others with
+ * pkts.
+ */
+#define VHOST_TEST_PKT_WEIGHT 256
+
 enum {
 	VHOST_TEST_VQ = 0,
 	VHOST_TEST_VQ_MAX = 1,
@@ -80,10 +86,8 @@
 		}
 		vhost_add_used_and_signal(&n->dev, vq, head, 0);
 		total_len += len;
-		if (unlikely(total_len >= VHOST_TEST_WEIGHT)) {
-			vhost_poll_queue(&vq->poll);
+		if (unlikely(vhost_exceeds_weight(vq, 0, total_len)))
 			break;
-		}
 	}
 
 	mutex_unlock(&vq->mutex);
@@ -115,7 +119,8 @@
 	dev = &n->dev;
 	vqs[VHOST_TEST_VQ] = &n->vqs[VHOST_TEST_VQ];
 	n->vqs[VHOST_TEST_VQ].handle_kick = handle_vq_kick;
-	vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX);
+	vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX, UIO_MAXIOV,
+		       VHOST_TEST_PKT_WEIGHT, VHOST_TEST_WEIGHT);
 
 	f->private_data = n;
 
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 0536f85..5dc174a 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -203,7 +203,6 @@
 int vhost_poll_start(struct vhost_poll *poll, struct file *file)
 {
 	__poll_t mask;
-	int ret = 0;
 
 	if (poll->wqh)
 		return 0;
@@ -213,10 +212,10 @@
 		vhost_poll_wakeup(&poll->wait, 0, 0, poll_to_key(mask));
 	if (mask & EPOLLERR) {
 		vhost_poll_stop(poll);
-		ret = -EINVAL;
+		return -EINVAL;
 	}
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(vhost_poll_start);
 
@@ -298,160 +297,6 @@
 		__vhost_vq_meta_reset(d->vqs[i]);
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_map_unprefetch(struct vhost_map *map)
-{
-	kfree(map->pages);
-	map->pages = NULL;
-	map->npages = 0;
-	map->addr = NULL;
-}
-
-static void vhost_uninit_vq_maps(struct vhost_virtqueue *vq)
-{
-	struct vhost_map *map[VHOST_NUM_ADDRS];
-	int i;
-
-	spin_lock(&vq->mmu_lock);
-	for (i = 0; i < VHOST_NUM_ADDRS; i++) {
-		map[i] = rcu_dereference_protected(vq->maps[i],
-				  lockdep_is_held(&vq->mmu_lock));
-		if (map[i])
-			rcu_assign_pointer(vq->maps[i], NULL);
-	}
-	spin_unlock(&vq->mmu_lock);
-
-	synchronize_rcu();
-
-	for (i = 0; i < VHOST_NUM_ADDRS; i++)
-		if (map[i])
-			vhost_map_unprefetch(map[i]);
-
-}
-
-static void vhost_reset_vq_maps(struct vhost_virtqueue *vq)
-{
-	int i;
-
-	vhost_uninit_vq_maps(vq);
-	for (i = 0; i < VHOST_NUM_ADDRS; i++)
-		vq->uaddrs[i].size = 0;
-}
-
-static bool vhost_map_range_overlap(struct vhost_uaddr *uaddr,
-				     unsigned long start,
-				     unsigned long end)
-{
-	if (unlikely(!uaddr->size))
-		return false;
-
-	return !(end < uaddr->uaddr || start > uaddr->uaddr - 1 + uaddr->size);
-}
-
-static void vhost_invalidate_vq_start(struct vhost_virtqueue *vq,
-				      int index,
-				      unsigned long start,
-				      unsigned long end)
-{
-	struct vhost_uaddr *uaddr = &vq->uaddrs[index];
-	struct vhost_map *map;
-	int i;
-
-	if (!vhost_map_range_overlap(uaddr, start, end))
-		return;
-
-	spin_lock(&vq->mmu_lock);
-	++vq->invalidate_count;
-
-	map = rcu_dereference_protected(vq->maps[index],
-					lockdep_is_held(&vq->mmu_lock));
-	if (map) {
-		if (uaddr->write) {
-			for (i = 0; i < map->npages; i++)
-				set_page_dirty(map->pages[i]);
-		}
-		rcu_assign_pointer(vq->maps[index], NULL);
-	}
-	spin_unlock(&vq->mmu_lock);
-
-	if (map) {
-		synchronize_rcu();
-		vhost_map_unprefetch(map);
-	}
-}
-
-static void vhost_invalidate_vq_end(struct vhost_virtqueue *vq,
-				    int index,
-				    unsigned long start,
-				    unsigned long end)
-{
-	if (!vhost_map_range_overlap(&vq->uaddrs[index], start, end))
-		return;
-
-	spin_lock(&vq->mmu_lock);
-	--vq->invalidate_count;
-	spin_unlock(&vq->mmu_lock);
-}
-
-static int vhost_invalidate_range_start(struct mmu_notifier *mn,
-					const struct mmu_notifier_range *range)
-{
-	struct vhost_dev *dev = container_of(mn, struct vhost_dev,
-					     mmu_notifier);
-	int i, j;
-
-	if (!mmu_notifier_range_blockable(range))
-		return -EAGAIN;
-
-	for (i = 0; i < dev->nvqs; i++) {
-		struct vhost_virtqueue *vq = dev->vqs[i];
-
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			vhost_invalidate_vq_start(vq, j,
-						  range->start,
-						  range->end);
-	}
-
-	return 0;
-}
-
-static void vhost_invalidate_range_end(struct mmu_notifier *mn,
-				       const struct mmu_notifier_range *range)
-{
-	struct vhost_dev *dev = container_of(mn, struct vhost_dev,
-					     mmu_notifier);
-	int i, j;
-
-	for (i = 0; i < dev->nvqs; i++) {
-		struct vhost_virtqueue *vq = dev->vqs[i];
-
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			vhost_invalidate_vq_end(vq, j,
-						range->start,
-						range->end);
-	}
-}
-
-static const struct mmu_notifier_ops vhost_mmu_notifier_ops = {
-	.invalidate_range_start = vhost_invalidate_range_start,
-	.invalidate_range_end = vhost_invalidate_range_end,
-};
-
-static void vhost_init_maps(struct vhost_dev *dev)
-{
-	struct vhost_virtqueue *vq;
-	int i, j;
-
-	dev->mmu_notifier.ops = &vhost_mmu_notifier_ops;
-
-	for (i = 0; i < dev->nvqs; ++i) {
-		vq = dev->vqs[i];
-		for (j = 0; j < VHOST_NUM_ADDRS; j++)
-			RCU_INIT_POINTER(vq->maps[j], NULL);
-	}
-}
-#endif
-
 static void vhost_vq_reset(struct vhost_dev *dev,
 			   struct vhost_virtqueue *vq)
 {
@@ -480,11 +325,7 @@
 	vq->busyloop_timeout = 0;
 	vq->umem = NULL;
 	vq->iotlb = NULL;
-	vq->invalidate_count = 0;
 	__vhost_vq_meta_reset(vq);
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_reset_vq_maps(vq);
-#endif
 }
 
 static int vhost_worker(void *data)
@@ -634,9 +475,7 @@
 	INIT_LIST_HEAD(&dev->read_list);
 	INIT_LIST_HEAD(&dev->pending_list);
 	spin_lock_init(&dev->iotlb_lock);
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_init_maps(dev);
-#endif
+
 
 	for (i = 0; i < dev->nvqs; ++i) {
 		vq = dev->vqs[i];
@@ -645,7 +484,6 @@
 		vq->heads = NULL;
 		vq->dev = dev;
 		mutex_init(&vq->mutex);
-		spin_lock_init(&vq->mmu_lock);
 		vhost_vq_reset(dev, vq);
 		if (vq->handle_kick)
 			vhost_poll_init(&vq->poll, vq->handle_kick,
@@ -725,18 +563,7 @@
 	if (err)
 		goto err_cgroup;
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	err = mmu_notifier_register(&dev->mmu_notifier, dev->mm);
-	if (err)
-		goto err_mmu_notifier;
-#endif
-
 	return 0;
-
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-err_mmu_notifier:
-	vhost_dev_free_iovecs(dev);
-#endif
 err_cgroup:
 	kthread_stop(worker);
 	dev->worker = NULL;
@@ -827,107 +654,6 @@
 	spin_unlock(&dev->iotlb_lock);
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_setup_uaddr(struct vhost_virtqueue *vq,
-			      int index, unsigned long uaddr,
-			      size_t size, bool write)
-{
-	struct vhost_uaddr *addr = &vq->uaddrs[index];
-
-	addr->uaddr = uaddr;
-	addr->size = size;
-	addr->write = write;
-}
-
-static void vhost_setup_vq_uaddr(struct vhost_virtqueue *vq)
-{
-	vhost_setup_uaddr(vq, VHOST_ADDR_DESC,
-			  (unsigned long)vq->desc,
-			  vhost_get_desc_size(vq, vq->num),
-			  false);
-	vhost_setup_uaddr(vq, VHOST_ADDR_AVAIL,
-			  (unsigned long)vq->avail,
-			  vhost_get_avail_size(vq, vq->num),
-			  false);
-	vhost_setup_uaddr(vq, VHOST_ADDR_USED,
-			  (unsigned long)vq->used,
-			  vhost_get_used_size(vq, vq->num),
-			  true);
-}
-
-static int vhost_map_prefetch(struct vhost_virtqueue *vq,
-			       int index)
-{
-	struct vhost_map *map;
-	struct vhost_uaddr *uaddr = &vq->uaddrs[index];
-	struct page **pages;
-	int npages = DIV_ROUND_UP(uaddr->size, PAGE_SIZE);
-	int npinned;
-	void *vaddr, *v;
-	int err;
-	int i;
-
-	spin_lock(&vq->mmu_lock);
-
-	err = -EFAULT;
-	if (vq->invalidate_count)
-		goto err;
-
-	err = -ENOMEM;
-	map = kmalloc(sizeof(*map), GFP_ATOMIC);
-	if (!map)
-		goto err;
-
-	pages = kmalloc_array(npages, sizeof(struct page *), GFP_ATOMIC);
-	if (!pages)
-		goto err_pages;
-
-	err = EFAULT;
-	npinned = __get_user_pages_fast(uaddr->uaddr, npages,
-					uaddr->write, pages);
-	if (npinned > 0)
-		release_pages(pages, npinned);
-	if (npinned != npages)
-		goto err_gup;
-
-	for (i = 0; i < npinned; i++)
-		if (PageHighMem(pages[i]))
-			goto err_gup;
-
-	vaddr = v = page_address(pages[0]);
-
-	/* For simplicity, fallback to userspace address if VA is not
-	 * contigious.
-	 */
-	for (i = 1; i < npinned; i++) {
-		v += PAGE_SIZE;
-		if (v != page_address(pages[i]))
-			goto err_gup;
-	}
-
-	map->addr = vaddr + (uaddr->uaddr & (PAGE_SIZE - 1));
-	map->npages = npages;
-	map->pages = pages;
-
-	rcu_assign_pointer(vq->maps[index], map);
-	/* No need for a synchronize_rcu(). This function should be
-	 * called by dev->worker so we are serialized with all
-	 * readers.
-	 */
-	spin_unlock(&vq->mmu_lock);
-
-	return 0;
-
-err_gup:
-	kfree(pages);
-err_pages:
-	kfree(map);
-err:
-	spin_unlock(&vq->mmu_lock);
-	return err;
-}
-#endif
-
 void vhost_dev_cleanup(struct vhost_dev *dev)
 {
 	int i;
@@ -957,16 +683,8 @@
 		kthread_stop(dev->worker);
 		dev->worker = NULL;
 	}
-	if (dev->mm) {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-		mmu_notifier_unregister(&dev->mmu_notifier, dev->mm);
-#endif
+	if (dev->mm)
 		mmput(dev->mm);
-	}
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	for (i = 0; i < dev->nvqs; i++)
-		vhost_uninit_vq_maps(dev->vqs[i]);
-#endif
 	dev->mm = NULL;
 }
 EXPORT_SYMBOL_GPL(vhost_dev_cleanup);
@@ -1195,26 +913,6 @@
 
 static inline int vhost_put_avail_event(struct vhost_virtqueue *vq)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			*((__virtio16 *)&used->ring[vq->num]) =
-				cpu_to_vhost16(vq, vq->avail_idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->avail_idx),
 			      vhost_avail_event(vq));
 }
@@ -1223,27 +921,6 @@
 				 struct vring_used_elem *head, int idx,
 				 int count)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-	size_t size;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			size = count * sizeof(*head);
-			memcpy(used->ring + idx, head, size);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_copy_to_user(vq, vq->used->ring + idx, head,
 				  count * sizeof(*head));
 }
@@ -1251,25 +928,6 @@
 static inline int vhost_put_used_flags(struct vhost_virtqueue *vq)
 
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			used->flags = cpu_to_vhost16(vq, vq->used_flags);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->used_flags),
 			      &vq->used->flags);
 }
@@ -1277,25 +935,6 @@
 static inline int vhost_put_used_idx(struct vhost_virtqueue *vq)
 
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			used->idx = cpu_to_vhost16(vq, vq->last_used_idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_put_user(vq, cpu_to_vhost16(vq, vq->last_used_idx),
 			      &vq->used->idx);
 }
@@ -1341,50 +980,12 @@
 static inline int vhost_get_avail_idx(struct vhost_virtqueue *vq,
 				      __virtio16 *idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*idx = avail->idx;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *idx, &vq->avail->idx);
 }
 
 static inline int vhost_get_avail_head(struct vhost_virtqueue *vq,
 				       __virtio16 *head, int idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*head = avail->ring[idx & (vq->num - 1)];
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *head,
 			       &vq->avail->ring[idx & (vq->num - 1)]);
 }
@@ -1392,98 +993,24 @@
 static inline int vhost_get_avail_flags(struct vhost_virtqueue *vq,
 					__virtio16 *flags)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*flags = avail->flags;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *flags, &vq->avail->flags);
 }
 
 static inline int vhost_get_used_event(struct vhost_virtqueue *vq,
 				       __virtio16 *event)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_avail *avail;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-		map = rcu_dereference(vq->maps[VHOST_ADDR_AVAIL]);
-		if (likely(map)) {
-			avail = map->addr;
-			*event = (__virtio16)avail->ring[vq->num];
-			rcu_read_unlock();
-			return 0;
-		}
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_avail(vq, *event, vhost_used_event(vq));
 }
 
 static inline int vhost_get_used_idx(struct vhost_virtqueue *vq,
 				     __virtio16 *idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_used *used;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_USED]);
-		if (likely(map)) {
-			used = map->addr;
-			*idx = used->idx;
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_get_used(vq, *idx, &vq->used->idx);
 }
 
 static inline int vhost_get_desc(struct vhost_virtqueue *vq,
 				 struct vring_desc *desc, int idx)
 {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	struct vhost_map *map;
-	struct vring_desc *d;
-
-	if (!vq->iotlb) {
-		rcu_read_lock();
-
-		map = rcu_dereference(vq->maps[VHOST_ADDR_DESC]);
-		if (likely(map)) {
-			d = map->addr;
-			*desc = *(d + idx);
-			rcu_read_unlock();
-			return 0;
-		}
-
-		rcu_read_unlock();
-	}
-#endif
-
 	return vhost_copy_from_user(vq, desc, vq->desc + idx, sizeof(*desc));
 }
 
@@ -1824,32 +1351,12 @@
 	return true;
 }
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-static void vhost_vq_map_prefetch(struct vhost_virtqueue *vq)
-{
-	struct vhost_map __rcu *map;
-	int i;
-
-	for (i = 0; i < VHOST_NUM_ADDRS; i++) {
-		rcu_read_lock();
-		map = rcu_dereference(vq->maps[i]);
-		rcu_read_unlock();
-		if (unlikely(!map))
-			vhost_map_prefetch(vq, i);
-	}
-}
-#endif
-
 int vq_meta_prefetch(struct vhost_virtqueue *vq)
 {
 	unsigned int num = vq->num;
 
-	if (!vq->iotlb) {
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-		vhost_vq_map_prefetch(vq);
-#endif
+	if (!vq->iotlb)
 		return 1;
-	}
 
 	return iotlb_access_ok(vq, VHOST_ACCESS_RO, (u64)(uintptr_t)vq->desc,
 			       vhost_get_desc_size(vq, num), VHOST_ADDR_DESC) &&
@@ -2060,16 +1567,6 @@
 
 	mutex_lock(&vq->mutex);
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	/* Unregister MMU notifer to allow invalidation callback
-	 * can access vq->uaddrs[] without holding a lock.
-	 */
-	if (d->mm)
-		mmu_notifier_unregister(&d->mmu_notifier, d->mm);
-
-	vhost_uninit_vq_maps(vq);
-#endif
-
 	switch (ioctl) {
 	case VHOST_SET_VRING_NUM:
 		r = vhost_vring_set_num(d, vq, argp);
@@ -2081,13 +1578,6 @@
 		BUG();
 	}
 
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	vhost_setup_vq_uaddr(vq);
-
-	if (d->mm)
-		mmu_notifier_register(&d->mmu_notifier, d->mm);
-#endif
-
 	mutex_unlock(&vq->mutex);
 
 	return r;
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 42a8c2a..e9ed272 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -12,9 +12,6 @@
 #include <linux/virtio_config.h>
 #include <linux/virtio_ring.h>
 #include <linux/atomic.h>
-#include <linux/pagemap.h>
-#include <linux/mmu_notifier.h>
-#include <asm/cacheflush.h>
 
 struct vhost_work;
 typedef void (*vhost_work_fn_t)(struct vhost_work *work);
@@ -83,24 +80,6 @@
 	VHOST_NUM_ADDRS = 3,
 };
 
-struct vhost_map {
-	int npages;
-	void *addr;
-	struct page **pages;
-};
-
-struct vhost_uaddr {
-	unsigned long uaddr;
-	size_t size;
-	bool write;
-};
-
-#if defined(CONFIG_MMU_NOTIFIER) && ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 0
-#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
-#else
-#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
-#endif
-
 /* The virtqueue structure describes a queue attached to a device. */
 struct vhost_virtqueue {
 	struct vhost_dev *dev;
@@ -111,22 +90,7 @@
 	struct vring_desc __user *desc;
 	struct vring_avail __user *avail;
 	struct vring_used __user *used;
-
-#if VHOST_ARCH_CAN_ACCEL_UACCESS
-	/* Read by memory accessors, modified by meta data
-	 * prefetching, MMU notifier and vring ioctl().
-	 * Synchonrized through mmu_lock (writers) and RCU (writers
-	 * and readers).
-	 */
-	struct vhost_map __rcu *maps[VHOST_NUM_ADDRS];
-	/* Read by MMU notifier, modified by vring ioctl(),
-	 * synchronized through MMU notifier
-	 * registering/unregistering.
-	 */
-	struct vhost_uaddr uaddrs[VHOST_NUM_ADDRS];
-#endif
 	const struct vhost_umem_node *meta_iotlb[VHOST_NUM_ADDRS];
-
 	struct file *kick;
 	struct eventfd_ctx *call_ctx;
 	struct eventfd_ctx *error_ctx;
@@ -181,8 +145,6 @@
 	bool user_be;
 #endif
 	u32 busyloop_timeout;
-	spinlock_t mmu_lock;
-	int invalidate_count;
 };
 
 struct vhost_msg_node {
@@ -196,9 +158,6 @@
 
 struct vhost_dev {
 	struct mm_struct *mm;
-#ifdef CONFIG_MMU_NOTIFIER
-	struct mmu_notifier mmu_notifier;
-#endif
 	struct mutex mutex;
 	struct vhost_virtqueue **vqs;
 	int nvqs;
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h
index f752d83..520f181 100644
--- a/fs/configfs/configfs_internal.h
+++ b/fs/configfs/configfs_internal.h
@@ -20,6 +20,15 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 
+struct configfs_fragment {
+	atomic_t frag_count;
+	struct rw_semaphore frag_sem;
+	bool frag_dead;
+};
+
+void put_fragment(struct configfs_fragment *);
+struct configfs_fragment *get_fragment(struct configfs_fragment *);
+
 struct configfs_dirent {
 	atomic_t		s_count;
 	int			s_dependent_count;
@@ -34,6 +43,7 @@
 #ifdef CONFIG_LOCKDEP
 	int			s_depth;
 #endif
+	struct configfs_fragment *s_frag;
 };
 
 #define CONFIGFS_ROOT		0x0001
@@ -61,8 +71,8 @@
 extern int configfs_create_file(struct config_item *, const struct configfs_attribute *);
 extern int configfs_create_bin_file(struct config_item *,
 				    const struct configfs_bin_attribute *);
-extern int configfs_make_dirent(struct configfs_dirent *,
-				struct dentry *, void *, umode_t, int);
+extern int configfs_make_dirent(struct configfs_dirent *, struct dentry *,
+				void *, umode_t, int, struct configfs_fragment *);
 extern int configfs_dirent_is_ready(struct configfs_dirent *);
 
 extern void configfs_hash_and_remove(struct dentry * dir, const char * name);
@@ -137,6 +147,7 @@
 {
 	if (!(sd->s_type & CONFIGFS_ROOT)) {
 		kfree(sd->s_iattr);
+		put_fragment(sd->s_frag);
 		kmem_cache_free(configfs_dir_cachep, sd);
 	}
 }
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 9211291..79fc25a 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -151,11 +151,38 @@
 
 #endif /* CONFIG_LOCKDEP */
 
+static struct configfs_fragment *new_fragment(void)
+{
+	struct configfs_fragment *p;
+
+	p = kmalloc(sizeof(struct configfs_fragment), GFP_KERNEL);
+	if (p) {
+		atomic_set(&p->frag_count, 1);
+		init_rwsem(&p->frag_sem);
+		p->frag_dead = false;
+	}
+	return p;
+}
+
+void put_fragment(struct configfs_fragment *frag)
+{
+	if (frag && atomic_dec_and_test(&frag->frag_count))
+		kfree(frag);
+}
+
+struct configfs_fragment *get_fragment(struct configfs_fragment *frag)
+{
+	if (likely(frag))
+		atomic_inc(&frag->frag_count);
+	return frag;
+}
+
 /*
  * Allocates a new configfs_dirent and links it to the parent configfs_dirent
  */
 static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent *parent_sd,
-						   void *element, int type)
+						   void *element, int type,
+						   struct configfs_fragment *frag)
 {
 	struct configfs_dirent * sd;
 
@@ -175,6 +202,7 @@
 		kmem_cache_free(configfs_dir_cachep, sd);
 		return ERR_PTR(-ENOENT);
 	}
+	sd->s_frag = get_fragment(frag);
 	list_add(&sd->s_sibling, &parent_sd->s_children);
 	spin_unlock(&configfs_dirent_lock);
 
@@ -209,11 +237,11 @@
 
 int configfs_make_dirent(struct configfs_dirent * parent_sd,
 			 struct dentry * dentry, void * element,
-			 umode_t mode, int type)
+			 umode_t mode, int type, struct configfs_fragment *frag)
 {
 	struct configfs_dirent * sd;
 
-	sd = configfs_new_dirent(parent_sd, element, type);
+	sd = configfs_new_dirent(parent_sd, element, type, frag);
 	if (IS_ERR(sd))
 		return PTR_ERR(sd);
 
@@ -260,7 +288,8 @@
  *	until it is validated by configfs_dir_set_ready()
  */
 
-static int configfs_create_dir(struct config_item *item, struct dentry *dentry)
+static int configfs_create_dir(struct config_item *item, struct dentry *dentry,
+				struct configfs_fragment *frag)
 {
 	int error;
 	umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO;
@@ -273,7 +302,8 @@
 		return error;
 
 	error = configfs_make_dirent(p->d_fsdata, dentry, item, mode,
-				     CONFIGFS_DIR | CONFIGFS_USET_CREATING);
+				     CONFIGFS_DIR | CONFIGFS_USET_CREATING,
+				     frag);
 	if (unlikely(error))
 		return error;
 
@@ -338,9 +368,10 @@
 {
 	int err = 0;
 	umode_t mode = S_IFLNK | S_IRWXUGO;
+	struct configfs_dirent *p = parent->d_fsdata;
 
-	err = configfs_make_dirent(parent->d_fsdata, dentry, sl, mode,
-				   CONFIGFS_ITEM_LINK);
+	err = configfs_make_dirent(p, dentry, sl, mode,
+				   CONFIGFS_ITEM_LINK, p->s_frag);
 	if (!err) {
 		err = configfs_create(dentry, mode, init_symlink);
 		if (err) {
@@ -599,7 +630,8 @@
 
 static int configfs_attach_group(struct config_item *parent_item,
 				 struct config_item *item,
-				 struct dentry *dentry);
+				 struct dentry *dentry,
+				 struct configfs_fragment *frag);
 static void configfs_detach_group(struct config_item *item);
 
 static void detach_groups(struct config_group *group)
@@ -647,7 +679,8 @@
  * try using vfs_mkdir.  Just a thought.
  */
 static int create_default_group(struct config_group *parent_group,
-				struct config_group *group)
+				struct config_group *group,
+				struct configfs_fragment *frag)
 {
 	int ret;
 	struct configfs_dirent *sd;
@@ -663,7 +696,7 @@
 		d_add(child, NULL);
 
 		ret = configfs_attach_group(&parent_group->cg_item,
-					    &group->cg_item, child);
+					    &group->cg_item, child, frag);
 		if (!ret) {
 			sd = child->d_fsdata;
 			sd->s_type |= CONFIGFS_USET_DEFAULT;
@@ -677,13 +710,14 @@
 	return ret;
 }
 
-static int populate_groups(struct config_group *group)
+static int populate_groups(struct config_group *group,
+			   struct configfs_fragment *frag)
 {
 	struct config_group *new_group;
 	int ret = 0;
 
 	list_for_each_entry(new_group, &group->default_groups, group_entry) {
-		ret = create_default_group(group, new_group);
+		ret = create_default_group(group, new_group, frag);
 		if (ret) {
 			detach_groups(group);
 			break;
@@ -797,11 +831,12 @@
  */
 static int configfs_attach_item(struct config_item *parent_item,
 				struct config_item *item,
-				struct dentry *dentry)
+				struct dentry *dentry,
+				struct configfs_fragment *frag)
 {
 	int ret;
 
-	ret = configfs_create_dir(item, dentry);
+	ret = configfs_create_dir(item, dentry, frag);
 	if (!ret) {
 		ret = populate_attrs(item);
 		if (ret) {
@@ -831,12 +866,13 @@
 
 static int configfs_attach_group(struct config_item *parent_item,
 				 struct config_item *item,
-				 struct dentry *dentry)
+				 struct dentry *dentry,
+				 struct configfs_fragment *frag)
 {
 	int ret;
 	struct configfs_dirent *sd;
 
-	ret = configfs_attach_item(parent_item, item, dentry);
+	ret = configfs_attach_item(parent_item, item, dentry, frag);
 	if (!ret) {
 		sd = dentry->d_fsdata;
 		sd->s_type |= CONFIGFS_USET_DIR;
@@ -852,7 +888,7 @@
 		 */
 		inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);
 		configfs_adjust_dir_dirent_depth_before_populate(sd);
-		ret = populate_groups(to_config_group(item));
+		ret = populate_groups(to_config_group(item), frag);
 		if (ret) {
 			configfs_detach_item(item);
 			d_inode(dentry)->i_flags |= S_DEAD;
@@ -1247,6 +1283,7 @@
 	struct configfs_dirent *sd;
 	const struct config_item_type *type;
 	struct module *subsys_owner = NULL, *new_item_owner = NULL;
+	struct configfs_fragment *frag;
 	char *name;
 
 	sd = dentry->d_parent->d_fsdata;
@@ -1265,6 +1302,12 @@
 		goto out;
 	}
 
+	frag = new_fragment();
+	if (!frag) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	/* Get a working ref for the duration of this function */
 	parent_item = configfs_get_config_item(dentry->d_parent);
 	type = parent_item->ci_type;
@@ -1367,9 +1410,9 @@
 	spin_unlock(&configfs_dirent_lock);
 
 	if (group)
-		ret = configfs_attach_group(parent_item, item, dentry);
+		ret = configfs_attach_group(parent_item, item, dentry, frag);
 	else
-		ret = configfs_attach_item(parent_item, item, dentry);
+		ret = configfs_attach_item(parent_item, item, dentry, frag);
 
 	spin_lock(&configfs_dirent_lock);
 	sd->s_type &= ~CONFIGFS_USET_IN_MKDIR;
@@ -1406,6 +1449,7 @@
 	 * reference.
 	 */
 	config_item_put(parent_item);
+	put_fragment(frag);
 
 out:
 	return ret;
@@ -1417,6 +1461,7 @@
 	struct config_item *item;
 	struct configfs_subsystem *subsys;
 	struct configfs_dirent *sd;
+	struct configfs_fragment *frag;
 	struct module *subsys_owner = NULL, *dead_item_owner = NULL;
 	int ret;
 
@@ -1474,6 +1519,16 @@
 		}
 	} while (ret == -EAGAIN);
 
+	frag = sd->s_frag;
+	if (down_write_killable(&frag->frag_sem)) {
+		spin_lock(&configfs_dirent_lock);
+		configfs_detach_rollback(dentry);
+		spin_unlock(&configfs_dirent_lock);
+		return -EINTR;
+	}
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
+
 	/* Get a working ref for the duration of this function */
 	item = configfs_get_config_item(dentry);
 
@@ -1574,7 +1629,7 @@
 	 */
 	err = -ENOENT;
 	if (configfs_dirent_is_ready(parent_sd)) {
-		file->private_data = configfs_new_dirent(parent_sd, NULL, 0);
+		file->private_data = configfs_new_dirent(parent_sd, NULL, 0, NULL);
 		if (IS_ERR(file->private_data))
 			err = PTR_ERR(file->private_data);
 		else
@@ -1732,8 +1787,13 @@
 {
 	struct configfs_subsystem *subsys = parent_group->cg_subsys;
 	struct dentry *parent;
+	struct configfs_fragment *frag;
 	int ret;
 
+	frag = new_fragment();
+	if (!frag)
+		return -ENOMEM;
+
 	mutex_lock(&subsys->su_mutex);
 	link_group(parent_group, group);
 	mutex_unlock(&subsys->su_mutex);
@@ -1741,7 +1801,7 @@
 	parent = parent_group->cg_item.ci_dentry;
 
 	inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
-	ret = create_default_group(parent_group, group);
+	ret = create_default_group(parent_group, group, frag);
 	if (ret)
 		goto err_out;
 
@@ -1749,12 +1809,14 @@
 	configfs_dir_set_ready(group->cg_item.ci_dentry->d_fsdata);
 	spin_unlock(&configfs_dirent_lock);
 	inode_unlock(d_inode(parent));
+	put_fragment(frag);
 	return 0;
 err_out:
 	inode_unlock(d_inode(parent));
 	mutex_lock(&subsys->su_mutex);
 	unlink_group(group);
 	mutex_unlock(&subsys->su_mutex);
+	put_fragment(frag);
 	return ret;
 }
 EXPORT_SYMBOL(configfs_register_group);
@@ -1770,16 +1832,12 @@
 	struct configfs_subsystem *subsys = group->cg_subsys;
 	struct dentry *dentry = group->cg_item.ci_dentry;
 	struct dentry *parent = group->cg_item.ci_parent->ci_dentry;
+	struct configfs_dirent *sd = dentry->d_fsdata;
+	struct configfs_fragment *frag = sd->s_frag;
 
-	mutex_lock(&subsys->su_mutex);
-	if (!group->cg_item.ci_parent->ci_group) {
-		/*
-		 * The parent has already been unlinked and detached
-		 * due to a rmdir.
-		 */
-		goto unlink_group;
-	}
-	mutex_unlock(&subsys->su_mutex);
+	down_write(&frag->frag_sem);
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
 
 	inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
 	spin_lock(&configfs_dirent_lock);
@@ -1796,7 +1854,6 @@
 	dput(dentry);
 
 	mutex_lock(&subsys->su_mutex);
-unlink_group:
 	unlink_group(group);
 	mutex_unlock(&subsys->su_mutex);
 }
@@ -1853,10 +1910,17 @@
 	struct dentry *dentry;
 	struct dentry *root;
 	struct configfs_dirent *sd;
+	struct configfs_fragment *frag;
+
+	frag = new_fragment();
+	if (!frag)
+		return -ENOMEM;
 
 	root = configfs_pin_fs();
-	if (IS_ERR(root))
+	if (IS_ERR(root)) {
+		put_fragment(frag);
 		return PTR_ERR(root);
+	}
 
 	if (!group->cg_item.ci_name)
 		group->cg_item.ci_name = group->cg_item.ci_namebuf;
@@ -1872,7 +1936,7 @@
 		d_add(dentry, NULL);
 
 		err = configfs_attach_group(sd->s_element, &group->cg_item,
-					    dentry);
+					    dentry, frag);
 		if (err) {
 			BUG_ON(d_inode(dentry));
 			d_drop(dentry);
@@ -1890,6 +1954,7 @@
 		unlink_group(group);
 		configfs_release_fs();
 	}
+	put_fragment(frag);
 
 	return err;
 }
@@ -1899,12 +1964,18 @@
 	struct config_group *group = &subsys->su_group;
 	struct dentry *dentry = group->cg_item.ci_dentry;
 	struct dentry *root = dentry->d_sb->s_root;
+	struct configfs_dirent *sd = dentry->d_fsdata;
+	struct configfs_fragment *frag = sd->s_frag;
 
 	if (dentry->d_parent != root) {
 		pr_err("Tried to unregister non-subsystem!\n");
 		return;
 	}
 
+	down_write(&frag->frag_sem);
+	frag->frag_dead = true;
+	up_write(&frag->frag_sem);
+
 	inode_lock_nested(d_inode(root),
 			  I_MUTEX_PARENT);
 	inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index 61e4db4..fb65b70 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -39,40 +39,44 @@
 	bool			write_in_progress;
 	char			*bin_buffer;
 	int			bin_buffer_size;
+	int			cb_max_size;
+	struct config_item	*item;
+	struct module		*owner;
+	union {
+		struct configfs_attribute	*attr;
+		struct configfs_bin_attribute	*bin_attr;
+	};
 };
 
-
-/**
- *	fill_read_buffer - allocate and fill buffer from item.
- *	@dentry:	dentry pointer.
- *	@buffer:	data buffer for file.
- *
- *	Allocate @buffer->page, if it hasn't been already, then call the
- *	config_item's show() method to fill the buffer with this attribute's
- *	data.
- *	This is called only once, on the file's first read.
- */
-static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buffer)
+static inline struct configfs_fragment *to_frag(struct file *file)
 {
-	struct configfs_attribute * attr = to_attr(dentry);
-	struct config_item * item = to_item(dentry->d_parent);
-	int ret = 0;
-	ssize_t count;
+	struct configfs_dirent *sd = file->f_path.dentry->d_fsdata;
+
+	return sd->s_frag;
+}
+
+static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer)
+{
+	struct configfs_fragment *frag = to_frag(file);
+	ssize_t count = -ENOENT;
 
 	if (!buffer->page)
 		buffer->page = (char *) get_zeroed_page(GFP_KERNEL);
 	if (!buffer->page)
 		return -ENOMEM;
 
-	count = attr->show(item, buffer->page);
+	down_read(&frag->frag_sem);
+	if (!frag->frag_dead)
+		count = buffer->attr->show(buffer->item, buffer->page);
+	up_read(&frag->frag_sem);
 
-	BUG_ON(count > (ssize_t)SIMPLE_ATTR_SIZE);
-	if (count >= 0) {
-		buffer->needs_read_fill = 0;
-		buffer->count = count;
-	} else
-		ret = count;
-	return ret;
+	if (count < 0)
+		return count;
+	if (WARN_ON_ONCE(count > (ssize_t)SIMPLE_ATTR_SIZE))
+		return -EIO;
+	buffer->needs_read_fill = 0;
+	buffer->count = count;
+	return 0;
 }
 
 /**
@@ -97,12 +101,13 @@
 static ssize_t
 configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-	struct configfs_buffer * buffer = file->private_data;
+	struct configfs_buffer *buffer = file->private_data;
 	ssize_t retval = 0;
 
 	mutex_lock(&buffer->mutex);
 	if (buffer->needs_read_fill) {
-		if ((retval = fill_read_buffer(file->f_path.dentry,buffer)))
+		retval = fill_read_buffer(file, buffer);
+		if (retval)
 			goto out;
 	}
 	pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
@@ -138,10 +143,8 @@
 configfs_read_bin_file(struct file *file, char __user *buf,
 		       size_t count, loff_t *ppos)
 {
+	struct configfs_fragment *frag = to_frag(file);
 	struct configfs_buffer *buffer = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	struct config_item *item = to_item(dentry->d_parent);
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
 	ssize_t retval = 0;
 	ssize_t len = min_t(size_t, count, PAGE_SIZE);
 
@@ -156,14 +159,19 @@
 
 	if (buffer->needs_read_fill) {
 		/* perform first read with buf == NULL to get extent */
-		len = bin_attr->read(item, NULL, 0);
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead)
+			len = buffer->bin_attr->read(buffer->item, NULL, 0);
+		else
+			len = -ENOENT;
+		up_read(&frag->frag_sem);
 		if (len <= 0) {
 			retval = len;
 			goto out;
 		}
 
 		/* do not exceed the maximum value */
-		if (bin_attr->cb_max_size && len > bin_attr->cb_max_size) {
+		if (buffer->cb_max_size && len > buffer->cb_max_size) {
 			retval = -EFBIG;
 			goto out;
 		}
@@ -176,7 +184,13 @@
 		buffer->bin_buffer_size = len;
 
 		/* perform second read to fill buffer */
-		len = bin_attr->read(item, buffer->bin_buffer, len);
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead)
+			len = buffer->bin_attr->read(buffer->item,
+						     buffer->bin_buffer, len);
+		else
+			len = -ENOENT;
+		up_read(&frag->frag_sem);
 		if (len < 0) {
 			retval = len;
 			vfree(buffer->bin_buffer);
@@ -226,25 +240,17 @@
 	return error ? -EFAULT : count;
 }
 
-
-/**
- *	flush_write_buffer - push buffer to config_item.
- *	@dentry:	dentry to the attribute
- *	@buffer:	data buffer for file.
- *	@count:		number of bytes
- *
- *	Get the correct pointers for the config_item and the attribute we're
- *	dealing with, then call the store() method for the attribute,
- *	passing the buffer that we acquired in fill_write_buffer().
- */
-
 static int
-flush_write_buffer(struct dentry * dentry, struct configfs_buffer * buffer, size_t count)
+flush_write_buffer(struct file *file, struct configfs_buffer *buffer, size_t count)
 {
-	struct configfs_attribute * attr = to_attr(dentry);
-	struct config_item * item = to_item(dentry->d_parent);
+	struct configfs_fragment *frag = to_frag(file);
+	int res = -ENOENT;
 
-	return attr->store(item, buffer->page, count);
+	down_read(&frag->frag_sem);
+	if (!frag->frag_dead)
+		res = buffer->attr->store(buffer->item, buffer->page, count);
+	up_read(&frag->frag_sem);
+	return res;
 }
 
 
@@ -268,13 +274,13 @@
 static ssize_t
 configfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-	struct configfs_buffer * buffer = file->private_data;
+	struct configfs_buffer *buffer = file->private_data;
 	ssize_t len;
 
 	mutex_lock(&buffer->mutex);
 	len = fill_write_buffer(buffer, buf, count);
 	if (len > 0)
-		len = flush_write_buffer(file->f_path.dentry, buffer, len);
+		len = flush_write_buffer(file, buffer, len);
 	if (len > 0)
 		*ppos += len;
 	mutex_unlock(&buffer->mutex);
@@ -299,8 +305,6 @@
 			size_t count, loff_t *ppos)
 {
 	struct configfs_buffer *buffer = file->private_data;
-	struct dentry *dentry = file->f_path.dentry;
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
 	void *tbuf = NULL;
 	ssize_t len;
 
@@ -316,8 +320,8 @@
 	/* buffer grows? */
 	if (*ppos + count > buffer->bin_buffer_size) {
 
-		if (bin_attr->cb_max_size &&
-			*ppos + count > bin_attr->cb_max_size) {
+		if (buffer->cb_max_size &&
+			*ppos + count > buffer->cb_max_size) {
 			len = -EFBIG;
 			goto out;
 		}
@@ -349,31 +353,51 @@
 	return len;
 }
 
-static int check_perm(struct inode * inode, struct file * file, int type)
+static int __configfs_open_file(struct inode *inode, struct file *file, int type)
 {
-	struct config_item *item = configfs_get_config_item(file->f_path.dentry->d_parent);
-	struct configfs_attribute * attr = to_attr(file->f_path.dentry);
-	struct configfs_bin_attribute *bin_attr = NULL;
-	struct configfs_buffer * buffer;
-	struct configfs_item_operations * ops = NULL;
-	int error = 0;
+	struct dentry *dentry = file->f_path.dentry;
+	struct configfs_fragment *frag = to_frag(file);
+	struct configfs_attribute *attr;
+	struct configfs_buffer *buffer;
+	int error;
 
-	if (!item || !attr)
-		goto Einval;
+	error = -ENOMEM;
+	buffer = kzalloc(sizeof(struct configfs_buffer), GFP_KERNEL);
+	if (!buffer)
+		goto out;
 
-	if (type & CONFIGFS_ITEM_BIN_ATTR)
-		bin_attr = to_bin_attr(file->f_path.dentry);
+	error = -ENOENT;
+	down_read(&frag->frag_sem);
+	if (unlikely(frag->frag_dead))
+		goto out_free_buffer;
 
-	/* Grab the module reference for this attribute if we have one */
-	if (!try_module_get(attr->ca_owner)) {
-		error = -ENODEV;
-		goto Done;
+	error = -EINVAL;
+	buffer->item = to_item(dentry->d_parent);
+	if (!buffer->item)
+		goto out_free_buffer;
+
+	attr = to_attr(dentry);
+	if (!attr)
+		goto out_put_item;
+
+	if (type & CONFIGFS_ITEM_BIN_ATTR) {
+		buffer->bin_attr = to_bin_attr(dentry);
+		buffer->cb_max_size = buffer->bin_attr->cb_max_size;
+	} else {
+		buffer->attr = attr;
 	}
 
-	if (item->ci_type)
-		ops = item->ci_type->ct_item_ops;
-	else
-		goto Eaccess;
+	buffer->owner = attr->ca_owner;
+	/* Grab the module reference for this attribute if we have one */
+	error = -ENODEV;
+	if (!try_module_get(buffer->owner))
+		goto out_put_item;
+
+	error = -EACCES;
+	if (!buffer->item->ci_type)
+		goto out_put_module;
+
+	buffer->ops = buffer->item->ci_type->ct_item_ops;
 
 	/* File needs write support.
 	 * The inode's perms must say it's ok,
@@ -381,13 +405,11 @@
 	 */
 	if (file->f_mode & FMODE_WRITE) {
 		if (!(inode->i_mode & S_IWUGO))
-			goto Eaccess;
-
+			goto out_put_module;
 		if ((type & CONFIGFS_ITEM_ATTR) && !attr->store)
-			goto Eaccess;
-
-		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !bin_attr->write)
-			goto Eaccess;
+			goto out_put_module;
+		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !buffer->bin_attr->write)
+			goto out_put_module;
 	}
 
 	/* File needs read support.
@@ -396,92 +418,72 @@
 	 */
 	if (file->f_mode & FMODE_READ) {
 		if (!(inode->i_mode & S_IRUGO))
-			goto Eaccess;
-
+			goto out_put_module;
 		if ((type & CONFIGFS_ITEM_ATTR) && !attr->show)
-			goto Eaccess;
-
-		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !bin_attr->read)
-			goto Eaccess;
+			goto out_put_module;
+		if ((type & CONFIGFS_ITEM_BIN_ATTR) && !buffer->bin_attr->read)
+			goto out_put_module;
 	}
 
-	/* No error? Great, allocate a buffer for the file, and store it
-	 * it in file->private_data for easy access.
-	 */
-	buffer = kzalloc(sizeof(struct configfs_buffer),GFP_KERNEL);
-	if (!buffer) {
-		error = -ENOMEM;
-		goto Enomem;
-	}
 	mutex_init(&buffer->mutex);
 	buffer->needs_read_fill = 1;
 	buffer->read_in_progress = false;
 	buffer->write_in_progress = false;
-	buffer->ops = ops;
 	file->private_data = buffer;
-	goto Done;
+	up_read(&frag->frag_sem);
+	return 0;
 
- Einval:
-	error = -EINVAL;
-	goto Done;
- Eaccess:
-	error = -EACCES;
- Enomem:
-	module_put(attr->ca_owner);
- Done:
-	if (error && item)
-		config_item_put(item);
+out_put_module:
+	module_put(buffer->owner);
+out_put_item:
+	config_item_put(buffer->item);
+out_free_buffer:
+	up_read(&frag->frag_sem);
+	kfree(buffer);
+out:
 	return error;
 }
 
 static int configfs_release(struct inode *inode, struct file *filp)
 {
-	struct config_item * item = to_item(filp->f_path.dentry->d_parent);
-	struct configfs_attribute * attr = to_attr(filp->f_path.dentry);
-	struct module * owner = attr->ca_owner;
-	struct configfs_buffer * buffer = filp->private_data;
+	struct configfs_buffer *buffer = filp->private_data;
 
-	if (item)
-		config_item_put(item);
-	/* After this point, attr should not be accessed. */
-	module_put(owner);
-
-	if (buffer) {
-		if (buffer->page)
-			free_page((unsigned long)buffer->page);
-		mutex_destroy(&buffer->mutex);
-		kfree(buffer);
-	}
+	module_put(buffer->owner);
+	if (buffer->page)
+		free_page((unsigned long)buffer->page);
+	mutex_destroy(&buffer->mutex);
+	kfree(buffer);
 	return 0;
 }
 
 static int configfs_open_file(struct inode *inode, struct file *filp)
 {
-	return check_perm(inode, filp, CONFIGFS_ITEM_ATTR);
+	return __configfs_open_file(inode, filp, CONFIGFS_ITEM_ATTR);
 }
 
 static int configfs_open_bin_file(struct inode *inode, struct file *filp)
 {
-	return check_perm(inode, filp, CONFIGFS_ITEM_BIN_ATTR);
+	return __configfs_open_file(inode, filp, CONFIGFS_ITEM_BIN_ATTR);
 }
 
-static int configfs_release_bin_file(struct inode *inode, struct file *filp)
+static int configfs_release_bin_file(struct inode *inode, struct file *file)
 {
-	struct configfs_buffer *buffer = filp->private_data;
-	struct dentry *dentry = filp->f_path.dentry;
-	struct config_item *item = to_item(dentry->d_parent);
-	struct configfs_bin_attribute *bin_attr = to_bin_attr(dentry);
-	ssize_t len = 0;
-	int ret;
+	struct configfs_buffer *buffer = file->private_data;
 
 	buffer->read_in_progress = false;
 
 	if (buffer->write_in_progress) {
+		struct configfs_fragment *frag = to_frag(file);
 		buffer->write_in_progress = false;
 
-		len = bin_attr->write(item, buffer->bin_buffer,
-				buffer->bin_buffer_size);
-
+		down_read(&frag->frag_sem);
+		if (!frag->frag_dead) {
+			/* result of ->release() is ignored */
+			buffer->bin_attr->write(buffer->item,
+					buffer->bin_buffer,
+					buffer->bin_buffer_size);
+		}
+		up_read(&frag->frag_sem);
 		/* vfree on NULL is safe */
 		vfree(buffer->bin_buffer);
 		buffer->bin_buffer = NULL;
@@ -489,10 +491,8 @@
 		buffer->needs_read_fill = 1;
 	}
 
-	ret = configfs_release(inode, filp);
-	if (len < 0)
-		return len;
-	return ret;
+	configfs_release(inode, file);
+	return 0;
 }
 
 
@@ -527,7 +527,7 @@
 
 	inode_lock_nested(d_inode(dir), I_MUTEX_NORMAL);
 	error = configfs_make_dirent(parent_sd, NULL, (void *) attr, mode,
-				     CONFIGFS_ITEM_ATTR);
+				     CONFIGFS_ITEM_ATTR, parent_sd->s_frag);
 	inode_unlock(d_inode(dir));
 
 	return error;
@@ -549,7 +549,7 @@
 
 	inode_lock_nested(dir->d_inode, I_MUTEX_NORMAL);
 	error = configfs_make_dirent(parent_sd, NULL, (void *) bin_attr, mode,
-				     CONFIGFS_ITEM_BIN_ATTR);
+				     CONFIGFS_ITEM_BIN_ATTR, parent_sd->s_frag);
 	inode_unlock(dir->d_inode);
 
 	return error;
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index c764cfe..2a03bfe 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1403,11 +1403,12 @@
 	if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
 		return 0;
 
-	/* No fileid? Just exit */
-	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
-		return 0;
+	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
+		/* Only a mounted-on-fileid? Just exit */
+		if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
+			return 0;
 	/* Has the inode gone and changed behind our back? */
-	if (nfsi->fileid != fattr->fileid) {
+	} else if (nfsi->fileid != fattr->fileid) {
 		/* Is this perhaps the mounted-on fileid? */
 		if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
 		    nfsi->fileid == fattr->mounted_on_fileid)
@@ -1807,11 +1808,12 @@
 			nfs_display_fhandle_hash(NFS_FH(inode)),
 			atomic_read(&inode->i_count), fattr->valid);
 
-	/* No fileid? Just exit */
-	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
-		return 0;
+	if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
+		/* Only a mounted-on-fileid? Just exit */
+		if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
+			return 0;
 	/* Has the inode gone and changed behind our back? */
-	if (nfsi->fileid != fattr->fileid) {
+	} else if (nfsi->fileid != fattr->fileid) {
 		/* Is this perhaps the mounted-on fileid? */
 		if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
 		    nfsi->fileid == fattr->mounted_on_fileid)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index f2ae8a0..4fc6454f 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -346,7 +346,6 @@
 #define QI_PC_PASID_SEL		(QI_PC_TYPE | QI_PC_GRAN(1))
 
 #define QI_EIOTLB_ADDR(addr)	((u64)(addr) & VTD_PAGE_MASK)
-#define QI_EIOTLB_GL(gl)	(((u64)gl) << 7)
 #define QI_EIOTLB_IH(ih)	(((u64)ih) << 6)
 #define QI_EIOTLB_AM(am)	(((u64)am))
 #define QI_EIOTLB_PASID(pasid) 	(((u64)pasid) << 32)
@@ -378,8 +377,6 @@
 #define QI_RESP_INVALID		0x1
 #define QI_RESP_FAILURE		0xf
 
-#define QI_GRAN_ALL_ALL			0
-#define QI_GRAN_NONG_ALL		1
 #define QI_GRAN_NONG_PASID		2
 #define QI_GRAN_PSI_PASID		3
 
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 010d578..df9f1fe 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5105,37 +5105,40 @@
 	return retval;
 }
 
-static int sched_read_attr(struct sched_attr __user *uattr,
-			   struct sched_attr *attr,
-			   unsigned int usize)
+/*
+ * Copy the kernel size attribute structure (which might be larger
+ * than what user-space knows about) to user-space.
+ *
+ * Note that all cases are valid: user-space buffer can be larger or
+ * smaller than the kernel-space buffer. The usual case is that both
+ * have the same size.
+ */
+static int
+sched_attr_copy_to_user(struct sched_attr __user *uattr,
+			struct sched_attr *kattr,
+			unsigned int usize)
 {
-	int ret;
+	unsigned int ksize = sizeof(*kattr);
 
 	if (!access_ok(uattr, usize))
 		return -EFAULT;
 
 	/*
-	 * If we're handed a smaller struct than we know of,
-	 * ensure all the unknown bits are 0 - i.e. old
-	 * user-space does not get uncomplete information.
+	 * sched_getattr() ABI forwards and backwards compatibility:
+	 *
+	 * If usize == ksize then we just copy everything to user-space and all is good.
+	 *
+	 * If usize < ksize then we only copy as much as user-space has space for,
+	 * this keeps ABI compatibility as well. We skip the rest.
+	 *
+	 * If usize > ksize then user-space is using a newer version of the ABI,
+	 * which part the kernel doesn't know about. Just ignore it - tooling can
+	 * detect the kernel's knowledge of attributes from the attr->size value
+	 * which is set to ksize in this case.
 	 */
-	if (usize < sizeof(*attr)) {
-		unsigned char *addr;
-		unsigned char *end;
+	kattr->size = min(usize, ksize);
 
-		addr = (void *)attr + usize;
-		end  = (void *)attr + sizeof(*attr);
-
-		for (; addr < end; addr++) {
-			if (*addr)
-				return -EFBIG;
-		}
-
-		attr->size = usize;
-	}
-
-	ret = copy_to_user(uattr, attr, attr->size);
-	if (ret)
+	if (copy_to_user(uattr, kattr, kattr->size))
 		return -EFAULT;
 
 	return 0;
@@ -5145,20 +5148,18 @@
  * sys_sched_getattr - similar to sched_getparam, but with sched_attr
  * @pid: the pid in question.
  * @uattr: structure containing the extended parameters.
- * @size: sizeof(attr) for fwd/bwd comp.
+ * @usize: sizeof(attr) that user-space knows about, for forwards and backwards compatibility.
  * @flags: for future extension.
  */
 SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr,
-		unsigned int, size, unsigned int, flags)
+		unsigned int, usize, unsigned int, flags)
 {
-	struct sched_attr attr = {
-		.size = sizeof(struct sched_attr),
-	};
+	struct sched_attr kattr = { };
 	struct task_struct *p;
 	int retval;
 
-	if (!uattr || pid < 0 || size > PAGE_SIZE ||
-	    size < SCHED_ATTR_SIZE_VER0 || flags)
+	if (!uattr || pid < 0 || usize > PAGE_SIZE ||
+	    usize < SCHED_ATTR_SIZE_VER0 || flags)
 		return -EINVAL;
 
 	rcu_read_lock();
@@ -5171,25 +5172,24 @@
 	if (retval)
 		goto out_unlock;
 
-	attr.sched_policy = p->policy;
+	kattr.sched_policy = p->policy;
 	if (p->sched_reset_on_fork)
-		attr.sched_flags |= SCHED_FLAG_RESET_ON_FORK;
+		kattr.sched_flags |= SCHED_FLAG_RESET_ON_FORK;
 	if (task_has_dl_policy(p))
-		__getparam_dl(p, &attr);
+		__getparam_dl(p, &kattr);
 	else if (task_has_rt_policy(p))
-		attr.sched_priority = p->rt_priority;
+		kattr.sched_priority = p->rt_priority;
 	else
-		attr.sched_nice = task_nice(p);
+		kattr.sched_nice = task_nice(p);
 
 #ifdef CONFIG_UCLAMP_TASK
-	attr.sched_util_min = p->uclamp_req[UCLAMP_MIN].value;
-	attr.sched_util_max = p->uclamp_req[UCLAMP_MAX].value;
+	kattr.sched_util_min = p->uclamp_req[UCLAMP_MIN].value;
+	kattr.sched_util_max = p->uclamp_req[UCLAMP_MAX].value;
 #endif
 
 	rcu_read_unlock();
 
-	retval = sched_read_attr(uattr, &attr, size);
-	return retval;
+	return sched_attr_copy_to_user(uattr, &kattr, usize);
 
 out_unlock:
 	rcu_read_unlock();
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bc9cfea..500f5db 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4470,6 +4470,8 @@
 	if (likely(cfs_rq->runtime_remaining > 0))
 		return;
 
+	if (cfs_rq->throttled)
+		return;
 	/*
 	 * if we're unable to extend our runtime we resched so that the active
 	 * hierarchy can be throttled
@@ -4673,6 +4675,9 @@
 		if (!cfs_rq_throttled(cfs_rq))
 			goto next;
 
+		/* By the above check, this should never be true */
+		SCHED_WARN_ON(cfs_rq->runtime_remaining > 0);
+
 		runtime = -cfs_rq->runtime_remaining + 1;
 		if (runtime > remaining)
 			runtime = remaining;
diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
index 798275a..26de020 100644
--- a/mm/balloon_compaction.c
+++ b/mm/balloon_compaction.c
@@ -124,7 +124,8 @@
 struct page *balloon_page_alloc(void)
 {
 	struct page *page = alloc_page(balloon_mapping_gfp_mask() |
-				       __GFP_NOMEMALLOC | __GFP_NORETRY);
+				       __GFP_NOMEMALLOC | __GFP_NORETRY |
+				       __GFP_NOWARN);
 	return page;
 }
 EXPORT_SYMBOL_GPL(balloon_page_alloc);
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index e73ec04..ecba39c 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -66,6 +66,9 @@
 {
 	struct request_key_auth *rka = dereference_key_rcu(key);
 
+	if (!rka)
+		return;
+
 	seq_puts(m, "key:");
 	seq_puts(m, key->description);
 	if (key_is_positive(key))
@@ -83,6 +86,9 @@
 	size_t datalen;
 	long ret;
 
+	if (!rka)
+		return -EKEYREVOKED;
+
 	datalen = rka->callout_len;
 	ret = datalen;
 
diff --git a/sound/pci/hda/hda_auto_parser.c b/sound/pci/hda/hda_auto_parser.c
index 92390d4..18e6546 100644
--- a/sound/pci/hda/hda_auto_parser.c
+++ b/sound/pci/hda/hda_auto_parser.c
@@ -824,6 +824,8 @@
 	while (id >= 0) {
 		const struct hda_fixup *fix = codec->fixup_list + id;
 
+		if (++depth > 10)
+			break;
 		if (fix->chained_before)
 			apply_fixup(codec, fix->chain_id, action, depth + 1);
 
@@ -863,8 +865,6 @@
 		}
 		if (!fix->chained || fix->chained_before)
 			break;
-		if (++depth > 10)
-			break;
 		id = fix->chain_id;
 	}
 }
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 5bf24fb..10d5023 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -6009,7 +6009,8 @@
 	if (spec->init_hook)
 		spec->init_hook(codec);
 
-	snd_hda_apply_verbs(codec);
+	if (!spec->skip_verbs)
+		snd_hda_apply_verbs(codec);
 
 	init_multi_out(codec);
 	init_extra_out(codec);
diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h
index 5f199dc..fb9f1a9 100644
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -243,6 +243,7 @@
 	unsigned int indep_hp_enabled:1; /* independent HP enabled */
 	unsigned int have_aamix_ctl:1;
 	unsigned int hp_mic_jack_modes:1;
+	unsigned int skip_verbs:1; /* don't apply verbs at snd_hda_gen_init() */
 
 	/* additional mute flags (only effective with auto_mute_via_amp=1) */
 	u64 mute_bits;
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index e333b3e3..c1ddfd2 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -837,9 +837,11 @@
 	if (spec->init_hook)
 		spec->init_hook(codec);
 
+	spec->gen.skip_verbs = 1; /* applied in below */
 	snd_hda_gen_init(codec);
 	alc_fix_pll(codec);
 	alc_auto_init_amp(codec, spec->init_amp);
+	snd_hda_apply_verbs(codec); /* apply verbs here after own init */
 
 	snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_INIT);
 
@@ -5797,6 +5799,7 @@
 	ALC286_FIXUP_ACER_AIO_HEADSET_MIC,
 	ALC256_FIXUP_ASUS_MIC_NO_PRESENCE,
 	ALC299_FIXUP_PREDATOR_SPK,
+	ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC,
 };
 
 static const struct hda_fixup alc269_fixups[] = {
@@ -6837,6 +6840,16 @@
 			{ }
 		}
 	},
+	[ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x14, 0x411111f0 }, /* disable confusing internal speaker */
+			{ 0x19, 0x04a11150 }, /* use as headset mic, without its own jack detect */
+			{ }
+		},
+		.chained = true,
+		.chain_id = ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -6979,6 +6992,7 @@
 	SND_PCI_QUIRK(0x103c, 0x82c0, "HP G3 mini premium", ALC221_FIXUP_HP_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x103c, 0x83b9, "HP Spectre x360", ALC269_FIXUP_HP_MUTE_LED_MIC3),
 	SND_PCI_QUIRK(0x103c, 0x8497, "HP Envy x360", ALC269_FIXUP_HP_MUTE_LED_MIC3),
+	SND_PCI_QUIRK(0x103c, 0x84e7, "HP Pavilion 15", ALC269_FIXUP_HP_MUTE_LED_MIC3),
 	SND_PCI_QUIRK(0x1043, 0x103e, "ASUS X540SA", ALC256_FIXUP_ASUS_MIC),
 	SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
 	SND_PCI_QUIRK(0x1043, 0x106d, "Asus K53BE", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
@@ -6995,6 +7009,7 @@
 	SND_PCI_QUIRK(0x1043, 0x1427, "Asus Zenbook UX31E", ALC269VB_FIXUP_ASUS_ZENBOOK),
 	SND_PCI_QUIRK(0x1043, 0x1517, "Asus Zenbook UX31A", ALC269VB_FIXUP_ASUS_ZENBOOK_UX31A),
 	SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC),
+	SND_PCI_QUIRK(0x1043, 0x17d1, "ASUS UX431FL", ALC294_FIXUP_ASUS_INTSPK_HEADSET_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW),
 	SND_PCI_QUIRK(0x1043, 0x1a30, "ASUS X705UD", ALC256_FIXUP_ASUS_MIC),
 	SND_PCI_QUIRK(0x1043, 0x1b13, "Asus U41SV", ALC269_FIXUP_INV_DMIC),
@@ -7072,6 +7087,7 @@
 	SND_PCI_QUIRK(0x17aa, 0x312a, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x312f, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
 	SND_PCI_QUIRK(0x17aa, 0x313c, "ThinkCentre Station", ALC294_FIXUP_LENOVO_MIC_LOCATION),
+	SND_PCI_QUIRK(0x17aa, 0x3151, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3902, "Lenovo E50-80", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
 	SND_PCI_QUIRK(0x17aa, 0x3977, "IdeaPad S210", ALC283_FIXUP_INT_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo B50-70", ALC269_FIXUP_DMIC_THINKPAD_ACPI),
@@ -8946,6 +8962,7 @@
 static const struct hda_device_id snd_hda_id_realtek[] = {
 	HDA_CODEC_ENTRY(0x10ec0215, "ALC215", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0221, "ALC221", patch_alc269),
+	HDA_CODEC_ENTRY(0x10ec0222, "ALC222", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0225, "ALC225", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0231, "ALC231", patch_alc269),
 	HDA_CODEC_ENTRY(0x10ec0233, "ALC233", patch_alc269),