Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

From: Juergen Gross
Date: Tue Jul 16 2019 - 00:15:33 EST

On 15.07.19 17:16, Andrew Cooper wrote:
There is a lot of infrastructure for functionality which is used
exclusively in __{save,restore}_processor_state() on the suspend/resume

cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored by
lapic_{suspend,resume}(). Saving and restoring cr8 independently of the
rest of the Local APIC state isn't a clever thing to be doing.

Delete the suspend/resume cr8 handling, which shrinks the size of struct
saved_context, and allows for the removal of both PVOPS.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>