On 19/03/18 14:41, Jan Beulich wrote:
> When XPTI is active, the CR3 load in restore_all_guest is sufficient
> when switching to user mode, improving in particular system call and
> page fault exit paths for the guest.
>
> Signed-off-by: Jan Beulich
> Tested-by: Juergen Gross
> Reviewed-by: Juer
>>> On 22.03.18 at 14:20, wrote:
> On Mon, Mar 19, 2018 at 07:41:42AM -0600, Jan Beulich wrote:
>> --- a/xen/arch/x86/pv/domain.c
>> +++ b/xen/arch/x86/pv/domain.c
>> @@ -219,10 +219,22 @@ int pv_domain_initialise(struct domain *
>> return rc;
>> }
>>
>> -static void _toggle_guest_pt(struc
On Mon, Mar 19, 2018 at 07:41:42AM -0600, Jan Beulich wrote:
> When XPTI is active, the CR3 load in restore_all_guest is sufficient
> when switching to user mode, improving in particular system call and
> page fault exit paths for the guest.
>
> Signed-off-by: Jan Beulich
> Tested-by: Juergen Gro
When XPTI is active, the CR3 load in restore_all_guest is sufficient
when switching to user mode, improving in particular system call and
page fault exit paths for the guest.
Signed-off-by: Jan Beulich
Tested-by: Juergen Gross
Reviewed-by: Juergen Gross
---
v2: Add ASSERT(!in_irq()).
--- a/xen
