diff options
| author | Borislav Petkov (AMD) <bp@alien8.de> | 2023-11-03 23:21:56 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-11-29 12:13:31 +0100 |
| commit | 794c68b20408bb6899f90314e36e256924cc85a1 (patch) | |
| tree | 48d86ee5155473549f4c87e74f56faf1f220d50a | |
| parent | b3ffbbd282d4eb79f489853a171242c2a06bd8b8 (diff) | |
x86/CPU/AMD: Get rid of amd_erratum_1485[]
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: http://lore.kernel.org/r/20231120104152.13740-13-bp@alien8.de
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 550ac25c201b..f8be7ac40305 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -59,10 +59,6 @@ static u32 nodes_per_socket = 1; #define AMD_MODEL_RANGE_START(range) (((range) >> 12) & 0xfff) #define AMD_MODEL_RANGE_END(range) ((range) & 0xfff) -static const int amd_erratum_1485[] = - AMD_LEGACY_ERRATUM(AMD_MODEL_RANGE(0x19, 0x10, 0x0, 0x1f, 0xf), - AMD_MODEL_RANGE(0x19, 0x60, 0x0, 0xaf, 0xf)); - static bool cpu_has_amd_erratum(struct cpuinfo_x86 *cpu, const int *erratum) { int osvw_id = *erratum++; @@ -1093,6 +1089,9 @@ static void init_amd_zen3(struct cpuinfo_x86 *c) static void init_amd_zen4(struct cpuinfo_x86 *c) { init_amd_zen_common(); + + if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) + msr_set_bit(MSR_ZEN4_BP_CFG, MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT); } static void init_amd(struct cpuinfo_x86 *c) @@ -1216,10 +1215,6 @@ static void init_amd(struct cpuinfo_x86 *c) cpu_has(c, X86_FEATURE_AUTOIBRS)) WARN_ON_ONCE(msr_set_bit(MSR_EFER, _EFER_AUTOIBRS)); - if (!cpu_has(c, X86_FEATURE_HYPERVISOR) && - cpu_has_amd_erratum(c, amd_erratum_1485)) - msr_set_bit(MSR_ZEN4_BP_CFG, MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT); - /* AMD CPUs don't need fencing after x2APIC/TSC_DEADLINE MSR writes. */ clear_cpu_cap(c, X86_FEATURE_APIC_MSRS_FENCE); } |