[PATCH 4/5] x86/cpu: Move AMD erratum 1386 table over to 'x86_cpu_id'

Dave Hansen posted 5 patches 1 year ago
There is a newer version of this series
[PATCH 4/5] x86/cpu: Move AMD erratum 1386 table over to 'x86_cpu_id'
Posted by Dave Hansen 1 year ago

From: Dave Hansen <dave.hansen@linux.intel.com>

The AMD erratum 1386 detection code uses and old style 'x86_cpu_desc'
table. Replace it with 'x86_cpu_id' so the old style can be removed.

I did not create a new helper macro here. The new table is certainly
more noisy than the old and it can be improved on. But I was hesitant
to create a new macro just for a single site that is only two ugly
lines in the end.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
---

 b/arch/x86/kernel/cpu/amd.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff -puN arch/x86/kernel/cpu/amd.c~amd-x86_cpu_id arch/x86/kernel/cpu/amd.c
--- a/arch/x86/kernel/cpu/amd.c~amd-x86_cpu_id	2024-12-06 11:33:17.271191446 -0800
+++ b/arch/x86/kernel/cpu/amd.c	2024-12-06 11:33:17.275191602 -0800
@@ -795,10 +795,9 @@ static void init_amd_bd(struct cpuinfo_x
 	clear_rdrand_cpuid_bit(c);
 }
 
-static const struct x86_cpu_desc erratum_1386_microcode[] = {
-	AMD_CPU_DESC(0x17,  0x1, 0x2, 0x0800126e),
-	AMD_CPU_DESC(0x17, 0x31, 0x0, 0x08301052),
-	{},
+static const struct x86_cpu_id erratum_1386_microcode[] = {
+	X86_MATCH_VFM_STEPPINGS(VFM_MAKE(X86_VENDOR_AMD, 0x17, 0x01), 0x2, 0x2, 0x0800126e),
+	X86_MATCH_VFM_STEPPINGS(VFM_MAKE(X86_VENDOR_AMD, 0x17, 0x31), 0x0, 0x0, 0x08301052),
 };
 
 static void fix_erratum_1386(struct cpuinfo_x86 *c)
@@ -814,7 +813,7 @@ static void fix_erratum_1386(struct cpui
 	 * Clear the feature flag only on microcode revisions which
 	 * don't have the fix.
 	 */
-	if (x86_cpu_has_min_microcode_rev(erratum_1386_microcode))
+	if (x86_match_min_microcode_rev(erratum_1386_microcode))
 		return;
 
 	clear_cpu_cap(c, X86_FEATURE_XSAVES);
_