| Date | Fri, 24 Jul 2020 10:43:07 -0700 | From | Kees Cook <> | Subject | Re: [PATCH v5 33/75] x86/head/64: Switch to initial stack earlier |
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On Fri, Jul 24, 2020 at 06:02:54PM +0200, Joerg Roedel wrote: > From: Joerg Roedel <jroedel@suse.de> > > Make sure there is a stack once the kernel runs from virual addresses. > At this stage any secondary CPU which boots will have lost its stack > because the kernel switched to a new page-table which does not map the > real-mode stack anymore. > > This is needed for handling early #VC exceptions caused by instructions > like CPUID. > > Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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