Re: x86/CET: Fix S3 resume with shadow stacks active

2022-02-25 Thread Andrew Cooper
On 25/02/2022 08:38, Jan Beulich wrote: > On 24.02.2022 20:48, Andrew Cooper wrote: >> The original shadow stack support has an error on S3 resume with very bizzare >> fallout. The BSP comes back up, but APs fail with: >> >> (XEN) Enabling non-boot CPUs ... >> (XEN) Stuck ?? >> (XEN) Error b

Re: x86/CET: Fix S3 resume with shadow stacks active

2022-02-25 Thread Jan Beulich
On 24.02.2022 20:48, Andrew Cooper wrote: > The original shadow stack support has an error on S3 resume with very bizzare > fallout. The BSP comes back up, but APs fail with: > > (XEN) Enabling non-boot CPUs ... > (XEN) Stuck ?? > (XEN) Error bringing CPU1 up: -5 > > and then later (on at