-
Like Xu authored
After commit b752ea0c ("perf/x86/intel/ds: Flush PEBS DS when changing PEBS_DATA_CFG"), the cpuc->pebs_data_cfg may save some bits that are not supported by real hardware, such as PEBS_UPDATE_DS_SW. This would cause the VMX hardware MSR switching mechanism to save/restore invalid values for PEBS_DATA_CFG MSR, thus crashing the host when PEBS is used for guest. Fix it by using the active host value from cpuc->active_pebs_data_cfg. Fixes: b752ea0c ("perf/x86/intel/ds: Flush PEBS DS when changing PEBS_DATA_CFG") Signed-off-by: Like Xu <likexu@tencent.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Link: https://lore.kernel.org/r/20230517133808.67885-1-likexu@tencent.com
3c845304