On 23.04.2020 20:24, Andrew Cooper wrote:
> On 21/04/2020 08:24, Jan Beulich wrote:
>> On 20.04.2020 16:59, Andrew Cooper wrote:
>>> @@ -46,24 +36,13 @@ void restore_rest_processor_state(void)
>>> /* Restore full CR4 (inc MCE) now that the IDT is in place. */
>>> write_cr4(mmu_cr4_feature
On 21/04/2020 08:24, Jan Beulich wrote:
> On 20.04.2020 16:59, Andrew Cooper wrote:
>> @@ -46,24 +36,13 @@ void restore_rest_processor_state(void)
>> /* Restore full CR4 (inc MCE) now that the IDT is in place. */
>> write_cr4(mmu_cr4_features);
>>
>> -/* Recover syscall MSRs */
>> -
On 20.04.2020 16:59, Andrew Cooper wrote:
> @@ -46,24 +36,13 @@ void restore_rest_processor_state(void)
> /* Restore full CR4 (inc MCE) now that the IDT is in place. */
> write_cr4(mmu_cr4_features);
>
> -/* Recover syscall MSRs */
> -wrmsrl(MSR_LSTAR, saved_lstar);
> -wrmsr
This make the S3 BSP path consistent with AP paths, and reduces the amount of
state needing stashing specially. Also, it takes care of re-setting up Xen's
LBR configuration if requested, which was missing previously.
Signed-off-by: Andrew Cooper
---
CC: Jan Beulich
CC: Wei Liu
CC: Roger Pau Mo
