kernel_optimize_test/include/kvm
Christoffer Dall accb99bcd0 KVM: arm/arm64: Simplify bg_timer programming
Instead of calling into kvm_timer_[un]schedule from the main kvm
blocking path, test if the VCPU is on the wait queue from the load/put
path and perform the background timer setup/cancel in this path.

This has the distinct advantage that we no longer race between load/put
and schedule/unschedule and programming and canceling of the bg_timer
always happens when the timer state is not loaded.

Note that we must now remove the checks in kvm_timer_blocking that do
not schedule a background timer if one of the timers can fire, because
we no longer have a guarantee that kvm_vcpu_check_block() will be called
before kvm_timer_blocking.

Reported-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2019-02-19 21:05:36 +00:00
..
arm_arch_timer.h KVM: arm/arm64: Simplify bg_timer programming 2019-02-19 21:05:36 +00:00
arm_pmu.h KVM: arm/arm64: PMU: Fix overflow interrupt injection 2017-07-25 14:18:01 +01:00
arm_psci.h arm/arm64: KVM: Add PSCI version selection API 2018-04-20 16:32:23 +01:00
arm_vgic.h KVM: arm/arm64: vgic-v3: Add core support for Group0 SGIs 2018-08-12 12:06:34 +01:00
iodev.h