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Merge tag 'kvmarm-6.13' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

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KVM/arm64 changes for 6.13, part #1

 - Support for stage-1 permission indirection (FEAT_S1PIE) and
   permission overlays (FEAT_S1POE), including nested virt + the
   emulated page table walker

 - Introduce PSCI SYSTEM_OFF2 support to KVM + client driver. This call
   was introduced in PSCIv1.3 as a mechanism to request hibernation,
   similar to the S4 state in ACPI

 - Explicitly trap + hide FEAT_MPAM (QoS controls) from KVM guests. As
   part of it, introduce trivial initialization of the host's MPAM
   context so KVM can use the corresponding traps

 - PMU support under nested virtualization, honoring the guest
   hypervisor's trap configuration and event filtering when running a
   nested guest

 - Fixes to vgic ITS serialization where stale device/interrupt table
   entries are not zeroed when the mapping is invalidated by the VM

 - Avoid emulated MMIO completion if userspace has requested synchronous
   external abort injection

 - Various fixes and cleanups affecting pKVM, vCPU initialization, and
   selftests
This commit is contained in:
Paolo Bonzini
2024-11-14 07:05:36 -05:00
parent b467ab82a9 60ad25e14a
commit 7b541d557f
59 changed files with 2866 additions and 468 deletions
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10
Documentation/virt/kvm/api.rst
View File

@@ -6857,6 +6857,10 @@ 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.
@@ -6890,6 +6894,12 @@ 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 */