x86/percpu: Fix "const_pcpu_hot" version generation failure

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Version generation for "const_pcpu_hot" symbol failed because genksyms
doesn't know the __seg_gs keyword. Effectively revert commit 4604c052b8
("x86/percpu: Declare const_pcpu_hot as extern const variable") and
use this_cpu_read_const() instead to avoid "sparse: dereference of
noderef expression" warning when reading const_pcpu_hot.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20231204210320.114429-1-ubizjak@gmail.com

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Uros Bizjak 2023-12-04 22:02:29 +01:00 • committed by Ingo Molnar

parent fc50065325

commit 0e3703630b

3 changed files with 11 additions and 3 deletions

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5

arch/x86/include/asm/current.h

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7

arch/x86/include/asm/percpu.h

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2

arch/x86/include/asm/processor.h

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