On 23.05.2024 13:16, Andrew Cooper wrote:
> The clobbering of this_cpu(xcr0) and this_cpu(xss) to architecturally invalid
> values is to force the subsequent set_xcr0() and set_msr_xss() to reload the
> hardware register.
>
> While XCR0 is reloaded in xstate_init(), MSR_XSS isn't. This causes
> g
The clobbering of this_cpu(xcr0) and this_cpu(xss) to architecturally invalid
values is to force the subsequent set_xcr0() and set_msr_xss() to reload the
hardware register.
While XCR0 is reloaded in xstate_init(), MSR_XSS isn't. This causes
get_msr_xss() to return the invalid value, and logic of
