Re: [PATCH v29 23/32] x86/cet/shstk: Add user-mode shadow stack support
From: Borislav Petkov <bp@alien8.de>
Date: 2021-08-27 18:20:30
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linux-api, linux-arch, linux-mm, lkml
On Fri, Aug 27, 2021 at 11:10:31AM -0700, Yu, Yu-cheng wrote:
Because on context switches the whole xstates are switched together, we need to make sure all are in registers.
There's context switch code which does that already.
Why would shstk_setup() be responsible for switching the whole extended
states buffer instead of only the shadow stack stuff only?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette