Merge tag 'x86_urgent_for_v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Add a new PCI ID which belongs to a new AMD CPU family 0x1a
- Ensure that that last level cache ID is set in all cases, in the AMD
CPU topology parsing code, in order to prevent invalid scheduling
domain CPU masks
* tag 'x86_urgent_for_v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/topology/amd: Ensure that LLC ID is initialized
x86/amd_nb: Add new PCI IDs for AMD family 0x1a
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index 5bf5f9f..3cf156f 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -95,6 +95,7 @@
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M78H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M70H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI200_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI300_DF_F3) },
{}
diff --git a/arch/x86/kernel/cpu/topology_amd.c b/arch/x86/kernel/cpu/topology_amd.c
index a7aa6ef..ce2d507 100644
--- a/arch/x86/kernel/cpu/topology_amd.c
+++ b/arch/x86/kernel/cpu/topology_amd.c
@@ -119,7 +119,7 @@
return true;
}
-static bool parse_fam10h_node_id(struct topo_scan *tscan)
+static void parse_fam10h_node_id(struct topo_scan *tscan)
{
union {
struct {
@@ -131,20 +131,20 @@
} nid;
if (!boot_cpu_has(X86_FEATURE_NODEID_MSR))
- return false;
+ return;
rdmsrl(MSR_FAM10H_NODE_ID, nid.msr);
store_node(tscan, nid.nodes_per_pkg + 1, nid.node_id);
tscan->c->topo.llc_id = nid.node_id;
- return true;
}
static void legacy_set_llc(struct topo_scan *tscan)
{
unsigned int apicid = tscan->c->topo.initial_apicid;
- /* parse_8000_0008() set everything up except llc_id */
- tscan->c->topo.llc_id = apicid >> tscan->dom_shifts[TOPO_CORE_DOMAIN];
+ /* If none of the parsers set LLC ID then use the die ID for it. */
+ if (tscan->c->topo.llc_id == BAD_APICID)
+ tscan->c->topo.llc_id = apicid >> tscan->dom_shifts[TOPO_CORE_DOMAIN];
}
static void topoext_fixup(struct topo_scan *tscan)
@@ -187,10 +187,7 @@
return;
/* Try the NODEID MSR */
- if (parse_fam10h_node_id(tscan))
- return;
-
- legacy_set_llc(tscan);
+ parse_fam10h_node_id(tscan);
}
void cpu_parse_topology_amd(struct topo_scan *tscan)
@@ -198,6 +195,7 @@
tscan->amd_nodes_per_pkg = 1;
topoext_fixup(tscan);
parse_topology_amd(tscan);
+ legacy_set_llc(tscan);
if (tscan->amd_nodes_per_pkg > 1)
set_cpu_cap(tscan->c, X86_FEATURE_AMD_DCM);
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index a0c75e4..c547d1d 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -580,6 +580,7 @@
#define PCI_DEVICE_ID_AMD_19H_M78H_DF_F3 0x12fb
#define PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3 0x12c3
#define PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3 0x16fb
+#define PCI_DEVICE_ID_AMD_1AH_M70H_DF_F3 0x12bb
#define PCI_DEVICE_ID_AMD_MI200_DF_F3 0x14d3
#define PCI_DEVICE_ID_AMD_MI300_DF_F3 0x152b
#define PCI_DEVICE_ID_AMD_VANGOGH_USB 0x163a
