On 05/02/21 12:29, Thomas Gleixner wrote:
On Fri, Feb 05 2021 at 11:10, Paolo Bonzini wrote:
On 05/02/21 10:56, Borislav Petkov wrote:
This would need an ack from the x86 people. Andy, Boris?
This looks like the PKS baremetal pile needs to be upstream first.
Yes, it does. I would like to
On Fri, Feb 05 2021 at 11:10, Paolo Bonzini wrote:
> On 05/02/21 10:56, Borislav Petkov wrote:
>>> This would need an ack from the x86 people. Andy, Boris?
>>
>> This looks like the PKS baremetal pile needs to be upstream first.
>
> Yes, it does. I would like to have an ack for including the
On 05/02/21 10:56, Borislav Petkov wrote:
On Fri, Feb 05, 2021 at 10:25:48AM +0100, Paolo Bonzini wrote:
On 05/02/21 09:37, Chenyi Qiang wrote:
diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c
index 57718716cc70..8027f854c600 100644
--- a/arch/x86/mm/pkeys.c
+++ b/arch/x86/mm/pkeys.c
@@
On Fri, Feb 05, 2021 at 10:25:48AM +0100, Paolo Bonzini wrote:
> On 05/02/21 09:37, Chenyi Qiang wrote:
> >
> > diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c
> > index 57718716cc70..8027f854c600 100644
> > --- a/arch/x86/mm/pkeys.c
> > +++ b/arch/x86/mm/pkeys.c
> > @@ -390,3 +390,9 @@
On 05/02/21 09:37, Chenyi Qiang wrote:
diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c
index 57718716cc70..8027f854c600 100644
--- a/arch/x86/mm/pkeys.c
+++ b/arch/x86/mm/pkeys.c
@@ -390,3 +390,9 @@ void pks_key_free(int pkey)
__clear_bit(pkey, _key_allocation_map);
}
On 05/02/21 09:37, Chenyi Qiang wrote:
+ /*
+* PKS is not yet implemented for shadow paging.
+* If not support VM_{ENTRY, EXIT}_LOAD_IA32_PKRS,
+* don't expose the PKS as well.
+*/
+ if (enable_ept && cpu_has_load_ia32_pkrs())
+
Protection Keys for Supervisor Pages (PKS) is a feature that extends the
Protection Keys architecture to support thread-specific permission
restrictions on supervisor pages, which extends an existing feature
named PKU (for user-mode pages).
PKS uses IA32_PKRS MSR (PKRS) at index 0x6E1 to allow
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