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SubjectRe: [PATCH] x86/mm/sme: Disable stack protection for mem_encrypt_identity.c
On Mon, Feb 26, 2018 at 05:25:54PM -0600, Tom Lendacky wrote:
> Stack protection is not compatible with early boot code. All of the early
> SME boot code is now isolated in a separate file, mem_encrypt_identity.c,
> so arch/x86/mm/Makefile can be updated to turn off stack protection for
> the entire file. This eliminates the need to worry about other functions
> within the file being instrumented with stack protection (as was seen
> when a newer version of GCC instrumented sme_encrypt_kernel() where an
> older version hadn't). It also allows removal of the __nostackprotector
> attribute from individual functions.
>
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> ---
> arch/x86/mm/Makefile | 1 +
> arch/x86/mm/mem_encrypt_identity.c | 4 ++--
> 2 files changed, 3 insertions(+), 2 deletions(-)

Reviewed-by: Borislav Petkov <bp@suse.de>

--
Regards/Gruss,
Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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