Merge tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu updates from Ingo Molnar:

 - Rework the x86 CPU vendor/family/model code: introduce the 'VFM'
   value that is an 8+8+8 bit concatenation of the vendor/family/model
   value, and add macros that work on VFM values. This simplifies the
   addition of new Intel models & families, and simplifies existing
   enumeration & quirk code.

 - Add support for the AMD 0x80000026 leaf, to better parse topology
   information

 - Optimize the NUMA allocation layout of more per-CPU data structures

 - Improve the workaround for AMD erratum 1386

 - Clear TME from /proc/cpuinfo as well, when disabled by the firmware

 - Improve x86 self-tests

 - Extend the mce_record tracepoint with the ::ppin and ::microcode fields

 - Implement recovery for MCE errors in TDX/SEAM non-root mode

 - Misc cleanups and fixes

* tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  x86/mm: Switch to new Intel CPU model defines
  x86/tsc_msr: Switch to new Intel CPU model defines
  x86/tsc: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/resctrl: Switch to new Intel CPU model defines
  x86/microcode/intel: Switch to new Intel CPU model defines
  x86/mce: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/cpu/intel_epb: Switch to new Intel CPU model defines
  x86/aperfmperf: Switch to new Intel CPU model defines
  x86/apic: Switch to new Intel CPU model defines
  perf/x86/msr: Switch to new Intel CPU model defines
  perf/x86/intel/uncore: Switch to new Intel CPU model defines
  perf/x86/intel/pt: Switch to new Intel CPU model defines
  perf/x86/lbr: Switch to new Intel CPU model defines
  perf/x86/intel/cstate: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/cpu/vfm: Update arch/x86/include/asm/intel-family.h
  x86/cpu/vfm: Add new macros to work with (vendor/family/model) values
  ...

1 files changed, 21 insertions, 3 deletions

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 84d41be6d06b..ad0623b659ed 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -47,7 +47,7 @@
 #include <linux/kexec.h>
 
 #include <asm/fred.h>
-#include <asm/intel-family.h>
+#include <asm/cpu_device_id.h>
 #include <asm/processor.h>
 #include <asm/traps.h>
 #include <asm/tlbflush.h>
@@ -1593,6 +1593,24 @@ noinstr void do_machine_check(struct pt_regs *regs)
 		else
 			queue_task_work(&m, msg, kill_me_maybe);
 
+	} else if (m.mcgstatus & MCG_STATUS_SEAM_NR) {
+		/*
+		 * Saved RIP on stack makes it look like the machine check
+		 * was taken in the kernel on the instruction following
+		 * the entry to SEAM mode. But MCG_STATUS_SEAM_NR indicates
+		 * that the machine check was taken inside SEAM non-root
+		 * mode.  CPU core has already marked that guest as dead.
+		 * It is OK for the kernel to resume execution at the
+		 * apparent point of the machine check as the fault did
+		 * not occur there. Mark the page as poisoned so it won't
+		 * be added to free list when the guest is terminated.
+		 */
+		if (mce_usable_address(&m)) {
+			struct page *p = pfn_to_online_page(m.addr >> PAGE_SHIFT);
+
+			if (p)
+				SetPageHWPoison(p);
+		}
 	} else {
 		/*
 		 * Handle an MCE which has happened in kernel space but from
@@ -1930,14 +1948,14 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
 		if (c->x86 == 6 && c->x86_model <= 13 && cfg->bootlog < 0)
 			cfg->bootlog = 0;
 
-		if (c->x86 == 6 && c->x86_model == 45)
+		if (c->x86_vfm == INTEL_SANDYBRIDGE_X)
 			mce_flags.snb_ifu_quirk = 1;
 
 		/*
 		 * Skylake, Cascacde Lake and Cooper Lake require a quirk on
 		 * rep movs.
 		 */
-		if (c->x86 == 6 && c->x86_model == INTEL_FAM6_SKYLAKE_X)
+		if (c->x86_vfm == INTEL_SKYLAKE_X)
 			mce_flags.skx_repmov_quirk = 1;
 	}