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authorLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 03:25:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-03-12 03:25:45 +0300
commit742582acec1e894b80815ab379e1c9d347a0406b (patch)
treed8f5dd2562882db77066a10a4aeca2dc29a4ac77 /arch
parentd8941ce52b708cfd520994e65760a2fa6a646dfb (diff)
parent03ceaf678d444e67fb9c1a372458ba869aa37a60 (diff)
downloadlinux-742582acec1e894b80815ab379e1c9d347a0406b.tar.xz
Merge tag 'x86_cpu_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu update from Borislav Petkov: - Have AMD Zen common init code run on all families from Zen1 onwards in order to save some future enablement effort * tag 'x86_cpu_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/CPU/AMD: Do the common init on future Zens too
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/amd.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index c82069e5f341..9cfd4e99944d 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -828,7 +828,6 @@ static void init_amd_zen_common(void)
static void init_amd_zen1(struct cpuinfo_x86 *c)
{
- init_amd_zen_common();
fix_erratum_1386(c);
/* Fix up CPUID bits, but only if not virtualised. */
@@ -882,7 +881,6 @@ static void zen2_zenbleed_check(struct cpuinfo_x86 *c)
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);
@@ -890,8 +888,6 @@ static void init_amd_zen2(struct cpuinfo_x86 *c)
static void init_amd_zen3(struct cpuinfo_x86 *c)
{
- init_amd_zen_common();
-
if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) {
/*
* Zen3 (Fam19 model < 0x10) parts are not susceptible to
@@ -905,15 +901,12 @@ 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_zen5(struct cpuinfo_x86 *c)
{
- init_amd_zen_common();
}
static void init_amd(struct cpuinfo_x86 *c)
@@ -950,6 +943,13 @@ static void init_amd(struct cpuinfo_x86 *c)
case 0x16: init_amd_jg(c); break;
}
+ /*
+ * Save up on some future enablement work and do common Zen
+ * settings.
+ */
+ if (c->x86 >= 0x17)
+ init_amd_zen_common();
+
if (boot_cpu_has(X86_FEATURE_ZEN1))
init_amd_zen1(c);
else if (boot_cpu_has(X86_FEATURE_ZEN2))