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| author | Borislav Petkov <bp@suse.de> | 2018-06-15 20:48:39 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-15 17:37:26 +0200 |
| commit | f2444b280db88d2098193600eb37328786cc6d32 (patch) | |
| tree | 2e63623e5a40ea44bd90f00b2a81fce43aeb53ca | |
| parent | dcf82399d6d1f2e3ee621cf4c87506574d348c39 (diff) | |
| download | linux-f2444b280db88d2098193600eb37328786cc6d32.tar.gz | |
x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info
commit 119bff8a9c9bb00116a844ec68be7bc4b1c768f5 upstream.
Old code used to check whether CPUID ext max level is >= 0x80000008 because
that last leaf contains the number of cores of the physical CPU. The three
functions called there now do not depend on that leaf anymore so the check
can go.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index bfa24a9abddbe..a46571f65609a 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -850,12 +850,9 @@ static void init_amd(struct cpuinfo_x86 *c) cpu_detect_cache_sizes(c); - /* Multi core CPU? */ - if (c->extended_cpuid_level >= 0x80000008) { - amd_detect_cmp(c); - amd_get_topology(c); - srat_detect_node(c); - } + amd_detect_cmp(c); + amd_get_topology(c); + srat_detect_node(c); init_amd_cacheinfo(c); |