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
  ...

2 files changed, 11 insertions, 18 deletions

diff --git a/tools/testing/selftests/x86/amx.c b/tools/testing/selftests/x86/amx.c
index d884fd69dd51..95aad6d8849b 100644
--- a/tools/testing/selftests/x86/amx.c
+++ b/tools/testing/selftests/x86/amx.c
@@ -103,21 +103,6 @@ static void clearhandler(int sig)
 
 #define CPUID_LEAF1_ECX_XSAVE_MASK	(1 << 26)
 #define CPUID_LEAF1_ECX_OSXSAVE_MASK	(1 << 27)
-static inline void check_cpuid_xsave(void)
-{
-	uint32_t eax, ebx, ecx, edx;
-
-	/*
-	 * CPUID.1:ECX.XSAVE[bit 26] enumerates general
-	 * support for the XSAVE feature set, including
-	 * XGETBV.
-	 */
-	__cpuid_count(1, 0, eax, ebx, ecx, edx);
-	if (!(ecx & CPUID_LEAF1_ECX_XSAVE_MASK))
-		fatal_error("cpuid: no CPU xsave support");
-	if (!(ecx & CPUID_LEAF1_ECX_OSXSAVE_MASK))
-		fatal_error("cpuid: no OS xsave support");
-}
 
 static uint32_t xbuf_size;
 
@@ -350,6 +335,7 @@ enum expected_result { FAIL_EXPECTED, SUCCESS_EXPECTED };
 
 /* arch_prctl() and sigaltstack() test */
 
+#define ARCH_GET_XCOMP_SUPP	0x1021
 #define ARCH_GET_XCOMP_PERM	0x1022
 #define ARCH_REQ_XCOMP_PERM	0x1023
 
@@ -928,8 +914,15 @@ static void test_ptrace(void)
 
 int main(void)
 {
-	/* Check hardware availability at first */
-	check_cpuid_xsave();
+	unsigned long features;
+	long rc;
+
+	rc = syscall(SYS_arch_prctl, ARCH_GET_XCOMP_SUPP, &features);
+	if (rc || (features & XFEATURE_MASK_XTILE) != XFEATURE_MASK_XTILE) {
+		ksft_print_msg("no AMX support\n");
+		return KSFT_SKIP;
+	}
+
 	check_cpuid_xtiledata();
 
 	init_stashed_xsave();
diff --git a/tools/testing/selftests/x86/lam.c b/tools/testing/selftests/x86/lam.c
index 215b8150b7cc..c0f016f45ee1 100644
--- a/tools/testing/selftests/x86/lam.c
+++ b/tools/testing/selftests/x86/lam.c
@@ -1183,7 +1183,7 @@ int main(int argc, char **argv)
 
 	if (!cpu_has_lam()) {
 		ksft_print_msg("Unsupported LAM feature!\n");
-		return -1;
+		return KSFT_SKIP;
 	}
 
 	while ((c = getopt(argc, argv, "ht:")) != -1) {