On 07/04/16 01:56, Jan Beulich wrote:
Andrew Cooper 04/07/16 2:40 AM >>>
>> On 07/04/2016 01:16, Jan Beulich wrote:
>> Andrew Cooper 04/05/16 7:49 PM >>>
There is no possible way of avoiding having a whitelist somewhere, which
limits what Xen will tolerate supporting for the gu
>>> Andrew Cooper 04/07/16 2:40 AM >>>
>On 07/04/2016 01:16, Jan Beulich wrote:
> Andrew Cooper 04/05/16 7:49 PM >>>
>>> There is no possible way of avoiding having a whitelist somewhere, which
>>> limits what Xen will tolerate supporting for the guest.
>> Right, but preferably in exactly one
On 07/04/2016 01:16, Jan Beulich wrote:
Andrew Cooper 04/05/16 7:49 PM >>>
>> On 31/03/16 08:48, Jan Beulich wrote:
>> On 23.03.16 at 17:36, wrote:
switch ( input[1] )
{
-case 0:
+case 0:
/* EAX: low 32bits of xfeature_enabled_mask */
>>> Andrew Cooper 04/05/16 7:49 PM >>>
>On 31/03/16 08:48, Jan Beulich wrote:
> On 23.03.16 at 17:36, wrote:
>>> switch ( input[1] )
>>> {
>>> -case 0:
>>> +case 0:
>>> /* EAX: low 32bits of xfeature_enabled_mask */
>>> -regs[0] = info->xfeature_mask & 0xFF
On 31/03/16 08:48, Jan Beulich wrote:
On 23.03.16 at 17:36, wrote:
>> --- a/tools/libxc/xc_cpuid_x86.c
>> +++ b/tools/libxc/xc_cpuid_x86.c
>> @@ -398,54 +398,97 @@ static void intel_xc_cpuid_policy(xc_interface *xch,
>> }
>> }
>>
>> +/* XSTATE bits in XCR0. */
>> +#define X86_XCR0_X87
>>> On 23.03.16 at 17:36, wrote:
> --- a/tools/libxc/xc_cpuid_x86.c
> +++ b/tools/libxc/xc_cpuid_x86.c
> @@ -398,54 +398,97 @@ static void intel_xc_cpuid_policy(xc_interface *xch,
> }
> }
>
> +/* XSTATE bits in XCR0. */
> +#define X86_XCR0_X87(1ULL << 0)
> +#define X86_XCR0_SSE(1U
On Wed, Mar 23, 2016 at 04:36:29PM +, Andrew Cooper wrote:
> It is unsafe to generate the guests xstate leaves from host information, as it
> prevents the differences between hosts from being hidden.
>
> In addition, some further improvements and corrections:
> - don't discard the known flags
It is unsafe to generate the guests xstate leaves from host information, as it
prevents the differences between hosts from being hidden.
In addition, some further improvements and corrections:
- don't discard the known flags in sub-leaves 2..63 ECX
- zap sub-leaves beyond 62
- zap all bits in l
