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| author | Tony W Wang-oc <TonyWWang-oc@zhaoxin.com> | 2020-01-15 16:00:57 +0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-01-20 16:32:35 +0100 |
| commit | 283bab9809786cf41798512f5c1e97f4b679ba96 (patch) | |
| tree | d918096e920376b63aac5b861b394bdec901b957 /tools/arch | |
| parent | bb02e2cb715a3f3552dbe765ea4a07799e4dff43 (diff) | |
| download | linux-283bab9809786cf41798512f5c1e97f4b679ba96.tar.bz2 | |
x86/cpu: Remove redundant cpu_detect_cache_sizes() call
Both functions call init_intel_cacheinfo() which computes L2 and L3 cache
sizes from CPUID(4). But then they also call cpu_detect_cache_sizes() a
bit later which computes ->x86_tlbsize and L2 size from CPUID(80000006).
However, the latter call is not needed because
- on these CPUs, CPUID(80000006).EBX for ->x86_tlbsize is reserved
- CPUID(80000006).ECX for the L2 size has the same result as CPUID(4)
Therefore, remove the latter call to simplify the code.
[ bp: Rewrite commit message. ]
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/1579075257-6985-1-git-send-email-TonyWWang-oc@zhaoxin.com
Diffstat (limited to 'tools/arch')
0 files changed, 0 insertions, 0 deletions