diff options
| author | Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> | 2020-09-08 13:57:46 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-11 11:53:19 +0300 |
| commit | 33b4711df4c1b3aec7c267c60fc24abccfadd40c (patch) | |
| tree | aea0d88056fdefcfaada5a90afbcc9fc026be29f /arch/x86/kernel/cpu/centaur.c | |
| parent | 8687bdc04128b2bd16faaae11db10128ad0da7b8 (diff) | |
| download | linux-33b4711df4c1b3aec7c267c60fc24abccfadd40c.tar.xz | |
x86/cpu/centaur: Add Centaur family >=7 CPUs initialization support
Add Centaur family >=7 CPUs specific initialization support.
Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1599562666-31351-3-git-send-email-TonyWWang-oc@zhaoxin.com
Diffstat (limited to 'arch/x86/kernel/cpu/centaur.c')
| -rw-r--r-- | arch/x86/kernel/cpu/centaur.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c index 5f811586a23c..345f7d905db6 100644 --- a/arch/x86/kernel/cpu/centaur.c +++ b/arch/x86/kernel/cpu/centaur.c @@ -65,6 +65,9 @@ static void init_c3(struct cpuinfo_x86 *c) c->x86_cache_alignment = c->x86_clflush_size * 2; set_cpu_cap(c, X86_FEATURE_REP_GOOD); } + + if (c->x86 >= 7) + set_cpu_cap(c, X86_FEATURE_REP_GOOD); } enum { @@ -95,7 +98,8 @@ static void early_init_centaur(struct cpuinfo_x86 *c) if (c->x86 == 5) set_cpu_cap(c, X86_FEATURE_CENTAUR_MCR); #endif - if (c->x86 == 6 && c->x86_model >= 0xf) + if ((c->x86 == 6 && c->x86_model >= 0xf) || + (c->x86 >= 7)) set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); #ifdef CONFIG_X86_64 @@ -204,7 +208,7 @@ static void init_centaur(struct cpuinfo_x86 *c) sprintf(c->x86_model_id, "WinChip %s", name); } #endif - if (c->x86 == 6) + if (c->x86 == 6 || c->x86 >= 7) init_c3(c); #ifdef CONFIG_X86_64 set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); |