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x86/cpu/centaur: Add Centaur family >=7 CPUs initialization support

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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
This commit is contained in:
Tony W Wang-oc 2020-09-08 18:57:46 +08:00 committed by Borislav Petkov
parent 8687bdc041
commit 33b4711df4
1 changed files with 6 additions and 2 deletions
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8
arch/x86/kernel/cpu/centaur.c
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@ -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);