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Date: Tue, 7 Jul 2015 16:14:48 -0700 From: Kees Cook <keescook@...omium.org> To: Yinghai Lu <yinghai@...nel.org> Cc: "H. Peter Anvin" <hpa@...or.com>, Baoquan He <bhe@...hat.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 26/42] x86: remove not needed clear_page calling On Tue, Jul 7, 2015 at 1:20 PM, Yinghai Lu <yinghai@...nel.org> wrote: > remove not needed clear_page for init_level4_page in x86_64_start_kernel(), > as it is with fill 512,8,0 already in head_64.S Will all possible entry points have come through head_64.S? -Kees > > Signed-off-by: Yinghai Lu <yinghai@...nel.org> > --- > arch/x86/kernel/head64.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c > index 44dc63b..a9f0299 100644 > --- a/arch/x86/kernel/head64.c > +++ b/arch/x86/kernel/head64.c > @@ -178,7 +178,6 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data) > */ > load_ucode_bsp(); > > - clear_page(init_level4_pgt); > /* set init_level4_pgt kernel high mapping*/ > init_level4_pgt[511] = early_level4_pgt[511]; > > -- > 1.8.4.5 > > -- > 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/ -- Kees Cook Chrome OS Security -- 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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