Intel/VPMU: Add support for full-width PMC writes

Enterprise / Virtualization / Xen - Boris Ostrovsky [oracle.com] - 7 August 2013 02:51 UTC

A recent Linux commit (069e0c3c405814778c7475d95b9fff5318f39834) added support for full-width PMC writes to performance counter registers, making these registers default for perf. Since current Xen VPMU does not support these new MSRs perf will fail to initialise in guests.

330c2e4 Intel/VPMU: Add support for full-width PMC writes
xen/arch/x86/hvm/vmx/vpmu_core2.c | 41 ++++++++++++++++++++++++++++++++-----
xen/include/asm-x86/msr-index.h | 2 +-
2 files changed, 37 insertions(+), 6 deletions(-)

Upstream: xenbits.xen.org

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