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| author | Oliver Upton <oliver.upton@linux.dev> | 2024-11-11 18:36:46 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-11-11 18:36:46 +0000 |
| commit | 7ccd615bc6ebb5e5d3565bf74ab2d695eb83b95e (patch) | |
| tree | 9f5315418b052a79c8e7a0a06d0189606fe4113d /Documentation/virt | |
| parent | Merge branch kvm-arm64/nv-s1pie-s1poe into kvmarm/next (diff) | |
| parent | arm64: Use SYSTEM_OFF2 PSCI call to power off for hibernate (diff) | |
| download | linux-7ccd615bc6ebb5e5d3565bf74ab2d695eb83b95e.tar.gz linux-7ccd615bc6ebb5e5d3565bf74ab2d695eb83b95e.zip | |
Merge branch kvm-arm64/psci-1.3 into kvmarm/next
* kvm-arm64/psci-1.3:
: PSCI v1.3 support, courtesy of David Woodhouse
:
: Bump KVM's PSCI implementation up to v1.3, with the added bonus of
: implementing the SYSTEM_OFF2 call. Like other system-scoped PSCI calls,
: this gets relayed to userspace for further processing with a new
: KVM_SYSTEM_EVENT_SHUTDOWN flag.
:
: As an added bonus, implement client-side support for hibernation with
: the SYSTEM_OFF2 call.
arm64: Use SYSTEM_OFF2 PSCI call to power off for hibernate
KVM: arm64: nvhe: Pass through PSCI v1.3 SYSTEM_OFF2 call
KVM: selftests: Add test for PSCI SYSTEM_OFF2
KVM: arm64: Add support for PSCI v1.2 and v1.3
KVM: arm64: Add PSCI v1.3 SYSTEM_OFF2 function for hibernation
firmware/psci: Add definitions for PSCI v1.3 specification
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index edc070c6e19b..8811cff9fc6b 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -6855,6 +6855,10 @@ the first `ndata` items (possibly zero) of the data array are valid. the guest issued a SYSTEM_RESET2 call according to v1.1 of the PSCI specification. + - for arm64, data[0] is set to KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2 + if the guest issued a SYSTEM_OFF2 call according to v1.3 of the PSCI + specification. + - for RISC-V, data[0] is set to the value of the second argument of the ``sbi_system_reset`` call. @@ -6888,6 +6892,12 @@ either: - Deny the guest request to suspend the VM. See ARM DEN0022D.b 5.19.2 "Caller responsibilities" for possible return values. +Hibernation using the PSCI SYSTEM_OFF2 call is enabled when PSCI v1.3 +is enabled. If a guest invokes the PSCI SYSTEM_OFF2 function, KVM will +exit to userspace with the KVM_SYSTEM_EVENT_SHUTDOWN event type and with +data[0] set to KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2. The only +supported hibernate type for the SYSTEM_OFF2 function is HIBERNATE_OFF. + :: /* KVM_EXIT_IOAPIC_EOI */ |