On Mon, Mar 24, 2025 at 05:30:49PM +0000, Mingwei Zhang wrote: > From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx> > > When entering/exiting a guest, some contexts for a guest have to be > switched. For examples, there is a dedicated interrupt vector for > guests on Intel platforms. > > When PMI switch into a new guest vector, guest_lvtpc value need to be > reflected onto HW, e,g., guest clear PMI mask bit, the HW PMI mask > bit should be cleared also, then PMI can be generated continuously > for guest. So guest_lvtpc parameter is added into perf_guest_enter() > and switch_guest_ctx(). > > Add a dedicated list to track all the pmus with the PASSTHROUGH cap, which s/PASSTHROUGH/MEDIATED_VPMU/ ? Thanks, Namhyung > may require switching the guest context. It can avoid going through the > huge pmus list. > > Suggested-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > Signed-off-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx> > Signed-off-by: Mingwei Zhang <mizhang@xxxxxxxxxx>
