mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-28 05:12:49 +00:00
Code Issues Releases Wiki Activity

x86/CPU/AMD: Move Zenbleed check to the Zen2 init function

Browse source 
Prefix it properly so that it is clear which generation it is dealing
with.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: http://lore.kernel.org/r/20231120104152.13740-8-bp@alien8.de
This commit is contained in:
Borislav Petkov (AMD) 2023-11-01 12:38:35 +01:00
parent 7c81ad8e8b
commit f69759be25
1 changed files with 3 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
arch/x86/kernel/cpu/amd.c
View file

@ -70,12 +70,6 @@ static const int amd_erratum_383[] =
static const int amd_erratum_1054[] =
AMD_LEGACY_ERRATUM(AMD_MODEL_RANGE(0x17, 0, 0, 0x2f, 0xf));
static const int amd_zenbleed[] =
AMD_LEGACY_ERRATUM(AMD_MODEL_RANGE(0x17, 0x30, 0x0, 0x4f, 0xf),
AMD_MODEL_RANGE(0x17, 0x60, 0x0, 0x7f, 0xf),
AMD_MODEL_RANGE(0x17, 0x90, 0x0, 0x91, 0xf),
AMD_MODEL_RANGE(0x17, 0xa0, 0x0, 0xaf, 0xf));
static const int amd_div0[] =
AMD_LEGACY_ERRATUM(AMD_MODEL_RANGE(0x17, 0x00, 0x0, 0x2f, 0xf),
AMD_MODEL_RANGE(0x17, 0x50, 0x0, 0x5f, 0xf));
@ -1059,11 +1053,8 @@ static bool cpu_has_zenbleed_microcode(void)
return true;
}
static void zenbleed_check(struct cpuinfo_x86 *c)
static void zen2_zenbleed_check(struct cpuinfo_x86 *c)
{
if (!cpu_has_amd_erratum(c, amd_zenbleed))
return;
if (cpu_has(c, X86_FEATURE_HYPERVISOR))
return;
@ -1084,6 +1075,7 @@ static void init_amd_zen2(struct cpuinfo_x86 *c)
init_amd_zen_common();
init_spectral_chicken(c);
fix_erratum_1386(c);
zen2_zenbleed_check(c);
}
static void init_amd_zen3(struct cpuinfo_x86 *c)
@ -1227,8 +1219,6 @@ static void init_amd(struct cpuinfo_x86 *c)
cpu_has(c, X86_FEATURE_AUTOIBRS))
WARN_ON_ONCE(msr_set_bit(MSR_EFER, _EFER_AUTOIBRS));
zenbleed_check(c);
if (cpu_has_amd_erratum(c, amd_div0)) {
pr_notice_once("AMD Zen1 DIV0 bug detected. Disable SMT for full protection.\n");
setup_force_cpu_bug(X86_BUG_DIV0);
@ -1393,7 +1383,7 @@ static void zenbleed_check_cpu(void *unused)
{
struct cpuinfo_x86 *c = &cpu_data(smp_processor_id());
zenbleed_check(c);
zen2_zenbleed_check(c);
}
void amd_check_microcode(void)