diff options
| author | Oliver Upton <oupton@google.com> | 2022-05-04 03:24:40 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-04 09:28:45 +0100 |
| commit | 7b33a09d036ffd9a04506122840629c7e870cf08 (patch) | |
| tree | 3ee3d0cf1d939f6c7ecfb1f02357bf7ec0ba54ae /arch/arm64/include/asm/kvm_host.h | |
| parent | 3fdd04592d38bb31a0bea567d9a66672b484bed3 (diff) | |
| download | linux-7b33a09d036ffd9a04506122840629c7e870cf08.tar.bz2 | |
KVM: arm64: Add support for userspace to suspend a vCPU
Introduce a new MP state, KVM_MP_STATE_SUSPENDED, which indicates a vCPU
is in a suspended state. In the suspended state the vCPU will block
until a wakeup event (pending interrupt) is recognized.
Add a new system event type, KVM_SYSTEM_EVENT_WAKEUP, to indicate to
userspace that KVM has recognized one such wakeup event. It is the
responsibility of userspace to then make the vCPU runnable, or leave it
suspended until the next wakeup event.
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220504032446.4133305-7-oupton@google.com
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index f3f93d48e21a..46027b9b80ca 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -46,6 +46,7 @@ #define KVM_REQ_RECORD_STEAL KVM_ARCH_REQ(3) #define KVM_REQ_RELOAD_GICv4 KVM_ARCH_REQ(4) #define KVM_REQ_RELOAD_PMU KVM_ARCH_REQ(5) +#define KVM_REQ_SUSPEND KVM_ARCH_REQ(6) #define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \ KVM_DIRTY_LOG_INITIALLY_SET) |