On Fri, Oct 21, 2016 at 01:18:59AM -0700, Imre Palik wrote: > From: Imre Palik <im...@amazon.de> > > perf doesn't seem to honour the number of fixed counters specified by cpuid > leaf 0xa. It always assume that Intel CPUs have at least 3 fixed counters. > > So if some of the fixed counters are masked out by the hypervisor, it still > tries to check/set them. > > This patch makes perf behave nicer when the kernel is running under a > hypervisor that doesn't expose all the counters. > > This patch contains some ideas from Matt Wilson.
Patch looks good to me. Reviewed-by: Andi Kleen <a...@linux.intel.com> -Andi
