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Date: Wed, 22 Aug 2012 03:21:52 -0700 From: tip-bot for Avi Kivity <avi@...hat.com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, alan@...ux.intel.com, tracek@...hat.com, hpa@...or.com, mingo@...nel.org, anthony@...emonkey.ws, alan@...rguk.ukuu.org.uk, mtosatti@...hat.com, tglx@...utronix.de, mjt@....msk.ru, hpa@...ux.intel.com, avi@...hat.com, borislav.petkov@....com Subject: [tip:x86/urgent] x86/alternatives: Fix p6 nops on non-modular kernels Commit-ID: cb09cad44f07044d9810f18f6f9a6a6f3771f979 Gitweb: http://git.kernel.org/tip/cb09cad44f07044d9810f18f6f9a6a6f3771f979 Author: Avi Kivity <avi@...hat.com> AuthorDate: Wed, 22 Aug 2012 13:03:48 +0300 Committer: Ingo Molnar <mingo@...nel.org> CommitDate: Wed, 22 Aug 2012 12:09:49 +0200 x86/alternatives: Fix p6 nops on non-modular kernels Probably a leftover from the early days of self-patching, p6nops are marked __initconst_or_module, which causes them to be discarded in a non-modular kernel. If something later triggers patching, it will overwrite kernel code with garbage. Reported-by: Tomas Racek <tracek@...hat.com> Signed-off-by: Avi Kivity <avi@...hat.com> Cc: Michael Tokarev <mjt@....msk.ru> Cc: Borislav Petkov <borislav.petkov@....com> Cc: Marcelo Tosatti <mtosatti@...hat.com> Cc: qemu-devel@...gnu.org Cc: Anthony Liguori <anthony@...emonkey.ws> Cc: H. Peter Anvin <hpa@...ux.intel.com> Cc: Alan Cox <alan@...rguk.ukuu.org.uk> Cc: Alan Cox <alan@...ux.intel.com> Link: http://lkml.kernel.org/r/5034AE84.90708@redhat.com Signed-off-by: Ingo Molnar <mingo@...nel.org> --- arch/x86/kernel/alternative.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index afb7ff7..ced4534 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -165,7 +165,7 @@ static const unsigned char * const k7_nops[ASM_NOP_MAX+2] = #endif #ifdef P6_NOP1 -static const unsigned char __initconst_or_module p6nops[] = +static const unsigned char p6nops[] = { P6_NOP1, P6_NOP2, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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