>>> On 21.08.18 at 12:10, wrote:
> On Thu, Aug 16, 2018 at 10:07:00AM +0100, Andrew Cooper wrote:
>> Irrespective of what we do here, I'd really like Wei to rebase his work
>> to remove the lazy fpu logic from the nested virt paths, because its a
>> no-brainer (perf wise) and comes with a massive
On Thu, Aug 16, 2018 at 10:07:00AM +0100, Andrew Cooper wrote:
> Irrespective of what we do here, I'd really like Wei to rebase his work
> to remove the lazy fpu logic from the nested virt paths, because its a
> no-brainer (perf wise) and comes with a massive amount of code
> simplification in
>>> On 16.08.18 at 13:27, wrote:
> On 16/08/18 11:03, Jan Beulich wrote:
> On 16.08.18 at 11:07, wrote:
>>> On 22/06/2018 11:57, Jan Beulich wrote:
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -616,7 +616,7 @@ void __init init_speculation_mitigations
On 16/08/18 11:03, Jan Beulich wrote:
On 16.08.18 at 11:07, wrote:
>> On 22/06/2018 11:57, Jan Beulich wrote:
>>> --- a/xen/arch/x86/spec_ctrl.c
>>> +++ b/xen/arch/x86/spec_ctrl.c
>>> @@ -616,7 +616,7 @@ void __init init_speculation_mitigations
>>>
>>> /* Check whether Eager FPU
>>> On 16.08.18 at 11:07, wrote:
> On 22/06/2018 11:57, Jan Beulich wrote:
>> --- a/xen/arch/x86/spec_ctrl.c
>> +++ b/xen/arch/x86/spec_ctrl.c
>> @@ -616,7 +616,7 @@ void __init init_speculation_mitigations
>>
>> /* Check whether Eager FPU should be enabled by default. */
>> if (
On 16/08/2018 10:07, Andrew Cooper wrote:
> On 22/06/2018 11:57, Jan Beulich wrote:
>> --- a/xen/arch/x86/spec_ctrl.c
>> +++ b/xen/arch/x86/spec_ctrl.c
>> @@ -616,7 +616,7 @@ void __init init_speculation_mitigations
>>
>> /* Check whether Eager FPU should be enabled by default. */
>>
On 22/06/2018 11:57, Jan Beulich wrote:
> --- a/xen/arch/x86/spec_ctrl.c
> +++ b/xen/arch/x86/spec_ctrl.c
> @@ -616,7 +616,7 @@ void __init init_speculation_mitigations
>
> /* Check whether Eager FPU should be enabled by default. */
> if ( opt_eager_fpu == -1 )
> -opt_eager_fpu
Other than FXRSTOR, XRSTOR allows for setting components to their
initial state. Utilize this to clear register state immediately after
having saved a vCPU's state (which we don't defer past
__context_switch()), considering that
- this supposedly reduces power consumption,
- this might even free
