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SubjectRe: [PATCH v02 2/5] perf/x86/intel: fix for MSR_LAST_BRANCH_FROM_x bug when no TSX
> This patch introduces it for wrmsrl's done for testing LBR support.
> Future patch in series adds the quirk for context switch, that would
> be required if LBR callstack is to be enabled for ring 0.

Patches are fine for me.

Reviewed-by: Andi Kleen <ak@linux.intel.com>

-Andi

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