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x86/nospec: Remove unused RSB_FILL_LOOPS

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It was never really used, see

  117cc7a908 ("x86/retpoline: Fill return stack buffer on vmexit")

  [ bp: Massage. ]

Signed-off-by: Anthony Steinhauser <asteinhauser@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20191226204512.24524-1-asteinhauser@google.com
This commit is contained in:
Anthony Steinhauser 2019-12-26 12:45:12 -08:00 committed by Borislav Petkov
parent bff47c2302
commit fae7bfcc78
1 changed files with 0 additions and 1 deletions
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arch/x86/include/asm/nospec-branch.h
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@ -37,7 +37,6 @@
*/
#define RSB_CLEAR_LOOPS 32 /* To forcibly overwrite all entries */
#define RSB_FILL_LOOPS 16 /* To avoid underflow */
/*
* Google experimented with loop-unrolling and this turned out to be