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| author |   Andre Przywara <andre.przywara@arm.com> | 2018-07-06 09:11:50 +0100 |
|---|---|---|
| committer |   Marc Zyngier <marc.zyngier@arm.com> | 2019-02-19 21:05:22 +0000 |
| commit | ee7930490a8f84570e96268f5736e99570b58307 (patch) | |
| tree | a517617fdf0cf02dcea998a8347b5dc93a5f14f6 /include/clocksource | |
| parent | Linux 5.0-rc3 (diff) | |
| download | wireguard-linux-ee7930490a8f84570e96268f5736e99570b58307.tar.xz wireguard-linux-ee7930490a8f84570e96268f5736e99570b58307.zip | |
clocksource/arm_arch_timer: Store physical timer IRQ number for KVM on VHE
A host running in VHE mode gets the EL2 physical timer as its time
source (accessed using the EL1 sysreg accessors, which get re-directed
to the EL2 sysregs by VHE).
The EL1 physical timer remains unused by the host kernel, allowing us to
pass that on directly to a KVM guest and saves us from emulating this
timer for the guest on VHE systems.
Store the EL1 Physical Timer's IRQ number in
struct arch_timer_kvm_info on VHE systems to allow KVM to use it.
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Diffstat (limited to 'include/clocksource')
| -rw-r--r-- | include/clocksource/arm_arch_timer.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/clocksource/arm_arch_timer.h b/include/clocksource/arm_arch_timer.h index 349e5957c949..702967d996bb 100644 --- a/include/clocksource/arm_arch_timer.h +++ b/include/clocksource/arm_arch_timer.h @@ -74,6 +74,7 @@ enum arch_timer_spi_nr { struct arch_timer_kvm_info { struct timecounter timecounter; int virtual_irq; + int physical_irq; }; struct arch_timer_mem_frame { |