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author | Sajan Karumanchi <sajan.karumanchi@amd.com> | 2023-08-01 15:20:55 +0000 |
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committer | Prem Mallappa <Premachandra.Mallappa@amd.com> | 2023-08-06 19:10:42 +0530 |
commit | dcad5c8578130dec7f35fd5b0885304b59f9f543 (patch) | |
tree | e32eda50e4f5de3a0397734892518709adeb387c /sysdeps/htl | |
parent | 53850f044f65dd11efdf67a2ab214d312295d85c (diff) | |
download | glibc-dcad5c8578130dec7f35fd5b0885304b59f9f543.tar.gz glibc-dcad5c8578130dec7f35fd5b0885304b59f9f543.tar.xz glibc-dcad5c8578130dec7f35fd5b0885304b59f9f543.zip |
x86: Fix for cache computation on AMD legacy cpus.
Some legacy AMD CPUs and hypervisors have the _cpuid_ '0x8000_001D' set to Zero, thus resulting in zeroed-out computed cache values. This patch reintroduces the old way of cache computation as a fail-safe option to handle these exceptions. Fixed 'level4_cache_size' value through handle_amd(). Reviewed-by: Premachandra Mallappa <premachandra.mallappa@amd.com> Tested-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'sysdeps/htl')
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