Re: [PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-07 Thread Will Deacon
On Thu, Dec 07, 2017 at 10:44:04AM -0500, Leeder, Neil wrote: > On 12/7/2017 8:38 AM, Will Deacon wrote: > > On Wed, Dec 06, 2017 at 04:19:24PM -0500, Leeder, Neil wrote: > >> On 12/6/2017 11:11 AM, Mark Rutland wrote: > >>> On Wed, Dec 06, 2017 at 10:55:33AM -0500, Neil Leeder wrote: > Guests

Re: [PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-07 Thread Leeder, Neil
On 12/7/2017 8:38 AM, Will Deacon wrote: > On Wed, Dec 06, 2017 at 04:19:24PM -0500, Leeder, Neil wrote: >> On 12/6/2017 11:11 AM, Mark Rutland wrote: >>> On Wed, Dec 06, 2017 at 10:55:33AM -0500, Neil Leeder wrote: Guests cannot access IMPDEF system registers, which are used by this driv

Re: [PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-07 Thread Will Deacon
On Wed, Dec 06, 2017 at 04:19:24PM -0500, Leeder, Neil wrote: > On 12/6/2017 11:11 AM, Mark Rutland wrote: > > On Wed, Dec 06, 2017 at 10:55:33AM -0500, Neil Leeder wrote: > >> Guests cannot access IMPDEF system registers, which are used > >> by this driver. Disable the driver if it's running in a

Re: [PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-06 Thread Leeder, Neil
On 12/6/2017 11:11 AM, Mark Rutland wrote: > On Wed, Dec 06, 2017 at 10:55:33AM -0500, Neil Leeder wrote: >> Guests cannot access IMPDEF system registers, which are used >> by this driver. Disable the driver if it's running in a guest VM. >> >> Signed-off-by: Neil Leeder >> --- >> drivers/perf/qc

Re: [PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-06 Thread Mark Rutland
On Wed, Dec 06, 2017 at 10:55:33AM -0500, Neil Leeder wrote: > Guests cannot access IMPDEF system registers, which are used > by this driver. Disable the driver if it's running in a guest VM. > > Signed-off-by: Neil Leeder > --- > drivers/perf/qcom_l2_pmu.c | 4 > 1 file changed, 4 insertio

[PATCH] perf: qcom_l2_pmu: don't allow guest access

2017-12-06 Thread Neil Leeder
Guests cannot access IMPDEF system registers, which are used by this driver. Disable the driver if it's running in a guest VM. Signed-off-by: Neil Leeder --- drivers/perf/qcom_l2_pmu.c | 4 1 file changed, 4 insertions(+) diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c