Andrew Murray 435e53fb5e arm64: KVM: Enable VHE support for :G/:H perf event modifiers ... With VHE different exception levels are used between the host (EL2) and guest (EL1) with a shared exception level for userpace (EL0). We can take advantage of this and use the PMU's exception level filtering to avoid enabling/disabling counters in the world-switch code. Instead we just modify the counter type to include or exclude EL0 at vcpu_{load,put} time. We also ensure that trapped PMU system register writes do not re-enable EL0 when reconfiguring the backing perf events. This approach completely avoids blackout windows seen with !VHE. Suggested-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Andrew Murray <andrew.murray@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>		2019-04-24 15:46:26 +01:00
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arm	arm64: KVM: Enable VHE support for :G/:H perf event modifiers	2019-04-24 15:46:26 +01:00
async_pf.c	KVM: fix some typos	2018-12-21 11:28:26 +01:00
async_pf.h
coalesced_mmio.c	kvm: Add memcg accounting to KVM allocations	2019-02-20 22:48:29 +01:00
coalesced_mmio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
eventfd.c	kvm: Add memcg accounting to KVM allocations	2019-02-20 22:48:29 +01:00
irqchip.c	kvm: Add memcg accounting to KVM allocations	2019-02-20 22:48:29 +01:00
Kconfig	KVM: arm64: Prevent KVM_COMPAT from being selected	2018-06-21 17:17:50 +01:00
kvm_main.c	ARM: some cleanups, direct physical timer assignment, cache sanitization	2019-03-15 15:00:28 -07:00
vfio.c	kvm: Add memcg accounting to KVM allocations	2019-02-20 22:48:29 +01:00
vfio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00