> From: Boris Ostrovsky [mailto:boris.ostrov...@oracle.com]
> Sent: Saturday, June 20, 2015 2:45 AM
>
> Add runtime interface for setting PMU mode and flags. Three main modes are
> provided:
> * XENPMU_MODE_OFF: PMU is not virtualized
> * XENPMU_MODE_SELF: Guests can access PMU MSRs and receive P
Am Freitag 19 Juni 2015, 14:44:35 schrieb Boris Ostrovsky:
> Add runtime interface for setting PMU mode and flags. Three main modes are
> provided:
> * XENPMU_MODE_OFF: PMU is not virtualized
> * XENPMU_MODE_SELF: Guests can access PMU MSRs and receive PMU interrupts.
> * XENPMU_MODE_HV: Same as X
On 06/23/2015 04:26 AM, Jan Beulich wrote:
On 22.06.15 at 18:10, wrote:
On 06/22/2015 11:10 AM, Jan Beulich wrote:
+switch ( op )
+{
+case XENPMU_mode_set:
+{
+if ( (pmu_params.val & ~(XENPMU_MODE_SELF | XENPMU_MODE_HV)) ||
+ (hweight64(pmu_params.val) > 1)
>>> On 22.06.15 at 18:10, wrote:
> On 06/22/2015 11:10 AM, Jan Beulich wrote:
>>
>>> +switch ( op )
>>> +{
>>> +case XENPMU_mode_set:
>>> +{
>>> +if ( (pmu_params.val & ~(XENPMU_MODE_SELF | XENPMU_MODE_HV)) ||
>>> + (hweight64(pmu_params.val) > 1) )
>>> +
On 06/22/2015 11:10 AM, Jan Beulich wrote:
+switch ( op )
+{
+case XENPMU_mode_set:
+{
+if ( (pmu_params.val & ~(XENPMU_MODE_SELF | XENPMU_MODE_HV)) ||
+ (hweight64(pmu_params.val) > 1) )
+return -EINVAL;
+
+/* 32-bit dom0 can only sample
>>> On 19.06.15 at 20:44, wrote:
> Add runtime interface for setting PMU mode and flags. Three main modes are
> provided:
> * XENPMU_MODE_OFF: PMU is not virtualized
> * XENPMU_MODE_SELF: Guests can access PMU MSRs and receive PMU interrupts.
> * XENPMU_MODE_HV: Same as XENPMU_MODE_SELF for non-p
Add runtime interface for setting PMU mode and flags. Three main modes are
provided:
* XENPMU_MODE_OFF: PMU is not virtualized
* XENPMU_MODE_SELF: Guests can access PMU MSRs and receive PMU interrupts.
* XENPMU_MODE_HV: Same as XENPMU_MODE_SELF for non-proviledged guests, dom0
can profile itself
