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Date: Sat, 17 Feb 2018 02:11:34 -0800 From: tip-bot for Dan Williams <tipbot@...or.com> To: linux-tip-commits@...r.kernel.org Cc: mingo@...nel.org, borntraeger@...ibm.com, jpoimboe@...hat.com, hpa@...or.com, bp@...en8.de, linux-kernel@...r.kernel.org, arjan@...ux.intel.com, peterz@...radead.org, torvalds@...ux-foundation.org, gregkh@...uxfoundation.org, luto@...nel.org, dwmw2@...radead.org, dan.j.williams@...el.com, tglx@...utronix.de, will.deacon@....com, dave.hansen@...ux.intel.com Subject: [tip:x86/pti] nospec: Include <asm/barrier.h> dependency Commit-ID: eb6174f6d1be16b19cfa43dac296bfed003ce1a6 Gitweb: https://git.kernel.org/tip/eb6174f6d1be16b19cfa43dac296bfed003ce1a6 Author: Dan Williams <dan.j.williams@...el.com> AuthorDate: Fri, 16 Feb 2018 13:20:54 -0800 Committer: Ingo Molnar <mingo@...nel.org> CommitDate: Sat, 17 Feb 2018 08:40:59 +0100 nospec: Include <asm/barrier.h> dependency The nospec.h header expects the per-architecture header file <asm/barrier.h> to optionally define array_index_mask_nospec(). Include that dependency to prevent inadvertent fallback to the default array_index_mask_nospec() implementation. The default implementation may not provide a full mitigation on architectures that perform data value speculation. Reported-by: Christian Borntraeger <borntraeger@...ibm.com> Signed-off-by: Dan Williams <dan.j.williams@...el.com> Cc: Andy Lutomirski <luto@...nel.org> Cc: Arjan van de Ven <arjan@...ux.intel.com> Cc: Borislav Petkov <bp@...en8.de> Cc: Dave Hansen <dave.hansen@...ux.intel.com> Cc: David Woodhouse <dwmw2@...radead.org> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: Josh Poimboeuf <jpoimboe@...hat.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Peter Zijlstra <peterz@...radead.org> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: Will Deacon <will.deacon@....com> Cc: linux-arch@...r.kernel.org Link: http://lkml.kernel.org/r/151881605404.17395.1341935530792574707.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Ingo Molnar <mingo@...nel.org> --- include/linux/nospec.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/nospec.h b/include/linux/nospec.h index 172a19d..e791ebc 100644 --- a/include/linux/nospec.h +++ b/include/linux/nospec.h @@ -5,6 +5,7 @@ #ifndef _LINUX_NOSPEC_H #define _LINUX_NOSPEC_H +#include <asm/barrier.h> /** * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise
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