x86/speculation: Fix up array_index_nospec_mask() asm constraint

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Allow the compiler to handle @size as an immediate value or memory
directly rather than allocating a register.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/151797010204.1289.1510000292250184993.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Dan Williams 2018-02-06 18:22:40 -08:00 • committed by Ingo Molnar

parent 3b3a371cc9

commit be3233fbfc

1 changed files with 1 additions and 1 deletions

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arch/x86/include/asm/barrier.h

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