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author | Borislav Petkov <bp@suse.de> | 2017-01-05 10:26:38 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-01-06 08:37:41 +0100 |
commit | a33d331761bc5dd330499ca5ceceb67f0640a8e6 (patch) | |
tree | 3c8d1d08f992cfcc2f87f77309aa586c22663296 /arch/x86/boot/string.h | |
parent | 159d3726db12b3476bc59ea0ab0a702103d466b5 (diff) | |
download | linux-stable-a33d331761bc5dd330499ca5ceceb67f0640a8e6.tar.gz linux-stable-a33d331761bc5dd330499ca5ceceb67f0640a8e6.tar.bz2 linux-stable-a33d331761bc5dd330499ca5ceceb67f0640a8e6.zip |
x86/CPU/AMD: Fix Bulldozer topology
The following commit:
8196dab4fc15 ("x86/cpu: Get rid of compute_unit_id")
... broke the initial strategy for Bulldozer-based cores' topology,
where we consider each thread of a compute unit a standalone core
and not a HT or SMT thread.
Revert to the firmware-supplied core_id numbering and do not make
them thread siblings as we don't consider them for such even if they
technically are, more or less.
Reported-and-tested-by: Brice Goglin <Brice.Goglin@inria.fr>
Tested-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> # v4.6+
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 8196dab4fc15 ("x86/cpu: Get rid of compute_unit_id")
Link: http://lkml.kernel.org/r/20170105092638.5247-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/boot/string.h')
0 files changed, 0 insertions, 0 deletions