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| author | Borislav Petkov <[email protected]> | 2022-08-19 17:47:44 +0000 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2022-09-28 16:35:37 +0000 |
| commit | df5b035b5683d6a25f077af889fb88e09827f8bc (patch) | |
| tree | 15b64f4c405a91cf8952b34f47851a10ac3baff8 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | x86/alternative: Fix race in try_get_desc() (diff) | |
| download | kernel-df5b035b5683d6a25f077af889fb88e09827f8bc.tar.gz kernel-df5b035b5683d6a25f077af889fb88e09827f8bc.zip | |
x86/cacheinfo: Add a cpu_llc_shared_mask() UP variant
On a CONFIG_SMP=n kernel, the LLC shared mask is 0, which prevents
__cache_amd_cpumap_setup() from doing the L3 masks setup, and more
specifically from setting up the shared_cpu_map and shared_cpu_list
files in sysfs, leading to lscpu from util-linux getting confused and
segfaulting.
Add a cpu_llc_shared_mask() UP variant which returns a mask with a
single bit set, i.e., for CPU0.
Fixes: 2b83809a5e6d ("x86/cpu/amd: Derive L3 shared_cpu_map from cpu_llc_shared_mask")
Reported-by: Saurabh Sengar <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions