Revision c9b08884c9c98929ec2d8abafd78e89062d01ee7 authored by Peter Zijlstra on 03 February 2014, 13:29:03 UTC, committed by Thomas Gleixner on 21 February 2014, 21:09:01 UTC
The current code simply assumes Intel Arch PerfMon v2+ to have the IA32_PERF_CAPABILITIES MSR; the SDM specifies that we should check CPUID[1].ECX[15] (aka, FEATURE_PDCM) instead. This was found by KVM which implements v2+ but didn't provide the capabilities MSR. Change the code to DTRT; KVM will also implement the MSR and return 0. Cc: pbonzini@redhat.com Reported-by: "Michael S. Tsirkin" <mst@redhat.com> Suggested-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140203132903.GI8874@twins.programming.kicks-ass.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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File | Mode | Size |
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.gitignore | -rw-r--r-- | 151 bytes |
Kconfig | -rw-r--r-- | 5.6 KB |
Makefile | -rw-r--r-- | 2.3 KB |
gen_init_cpio.c | -rw-r--r-- | 12.7 KB |
initramfs_data.S | -rw-r--r-- | 1.3 KB |
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