Commit-ID: eb6174f6d1be16b19cfa43dac296bfed003ce1a6 Gitweb: https://git.kernel.org/tip/eb6174f6d1be16b19cfa43dac296bfed003ce1a6 Author: Dan Williams <dan.j.willi...@intel.com> AuthorDate: Fri, 16 Feb 2018 13:20:54 -0800 Committer: Ingo Molnar <mi...@kernel.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 <borntrae...@de.ibm.com> Signed-off-by: Dan Williams <dan.j.willi...@intel.com> Cc: Andy Lutomirski <l...@kernel.org> Cc: Arjan van de Ven <ar...@linux.intel.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: David Woodhouse <dw...@infradead.org> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Will Deacon <will.dea...@arm.com> Cc: linux-a...@vger.kernel.org Link: http://lkml.kernel.org/r/151881605404.17395.1341935530792574707.st...@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Ingo Molnar <mi...@kernel.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
