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
- Also in
- linux-api, linux-arch, linux-doc, lkml
- Reply to
- Yu, Yu-cheng, 2021-08-27
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