> From: Andrew Cooper [mailto:andrew.coop...@citrix.com]
> Sent: Monday, February 13, 2017 10:33 PM
>
> To avoid leaking host MSR state into guests, guest LSTAR, STAR and
> SYSCALL_MASK state is unconditionally loaded when switching into guest
> context.
>
> Attempting to dirty-track the state is
>>> On 13.02.17 at 17:22, wrote:
> On 13/02/17 16:12, Andrew Cooper wrote:
>> On 13/02/17 16:01, Jan Beulich wrote:
>> On 13.02.17 at 15:32, wrote:
To avoid leaking host MSR state into guests, guest LSTAR, STAR and
SYSCALL_MASK state is unconditionally loaded when switching into gue
>>> On 13.02.17 at 17:12, wrote:
> On 13/02/17 16:01, Jan Beulich wrote:
> On 13.02.17 at 15:32, wrote:
>>> To avoid leaking host MSR state into guests, guest LSTAR, STAR and
>>> SYSCALL_MASK state is unconditionally loaded when switching into guest
>>> context.
>>>
>>> Attempting to dirty-tr
On 13/02/17 16:12, Andrew Cooper wrote:
> On 13/02/17 16:01, Jan Beulich wrote:
> On 13.02.17 at 15:32, wrote:
>>> To avoid leaking host MSR state into guests, guest LSTAR, STAR and
>>> SYSCALL_MASK state is unconditionally loaded when switching into guest
>>> context.
>>>
>>> Attempting to di
On 13/02/17 16:01, Jan Beulich wrote:
On 13.02.17 at 15:32, wrote:
>> To avoid leaking host MSR state into guests, guest LSTAR, STAR and
>> SYSCALL_MASK state is unconditionally loaded when switching into guest
>> context.
>>
>> Attempting to dirty-track the state is pointless; host state is
>>> On 13.02.17 at 15:32, wrote:
> To avoid leaking host MSR state into guests, guest LSTAR, STAR and
> SYSCALL_MASK state is unconditionally loaded when switching into guest
> context.
>
> Attempting to dirty-track the state is pointless; host state is always
> restoring upon exit from guest con
To avoid leaking host MSR state into guests, guest LSTAR, STAR and
SYSCALL_MASK state is unconditionally loaded when switching into guest
context.
Attempting to dirty-track the state is pointless; host state is always
restoring upon exit from guest context, meaning that guest state is always
consi
