Messages in this thread | | | Date | Fri, 19 May 2017 15:16:51 -0500 | From | Josh Poimboeuf <> | Subject | 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: > > 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
| |