On Tue, Oct 12 2021 at 20:25, Thomas Gleixner wrote: > On Tue, Oct 12 2021 at 18:53, Borislav Petkov wrote: >> On Tue, Oct 12, 2021 at 02:00:17AM +0200, Thomas Gleixner wrote: >>> /* >>> - * Guests with protected state can't have it set by the hypervisor, >>> - * so skip trying to set it. >>> + * Guest with protected state have guest_fpu == NULL which makes >> >> "Guests ... " >> >>> + * the swap only safe the host state. Exclude PKRU from restore as >> >> "save" > > No I meant safe, but let me rephrase it, Swap does both save and > restore. But it's not safe to dereference a NULL pointer :) > > .... makes the swap only handle the host state. Exclude PKRU from restore as Gah. I should have looked at the context first. "save" is correct here. Oh well...
