Re: [PATCH v5 32/32] x86/mm: Add support to make use of Secure Memory Encryption

On Fri, May 19, 2017 at 01:30:05PM +0200, Borislav Petkov wrote:

quoted

it is called so early. I can get past it by adding:

CFLAGS_mem_encrypt.o := $(nostackp)

in the arch/x86/mm/Makefile, but that obviously eliminates the support
for the whole file.  Would it be better to split out the sme_enable()
and other boot routines into a separate file or just apply the
$(nostackp) to the whole file?

Josh might have a better idea here... CCed.

I'm the stack validation guy, not the stack protection guy :-)

But there is a way to disable compiler options on a per-function basis
with the gcc __optimize__ function attribute.  For example:

  __attribute__((__optimize__("no-stack-protector")))

-- 
Josh

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