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authorMarc Zyngier <maz@kernel.org>2022-10-01 12:19:29 +0300
committerMarc Zyngier <maz@kernel.org>2022-10-01 12:19:29 +0300
commit250012dd58406fdcce0bc4d825f56acd7a0d93a5 (patch)
tree4f96fc031eae867ed227c6d357a0338a820d7839 /include/uapi/linux
parentbb0cca240a16dd9721c6ee1d55865465a3fb7211 (diff)
parent4b3402f1f4d9860301d6d5cd7aff3b67f678d577 (diff)
downloadlinux-250012dd58406fdcce0bc4d825f56acd7a0d93a5.tar.xz
Merge branch kvm-arm64/dirty-log-ordered into kvmarm-master/next
* kvm-arm64/dirty-log-ordered: : . : Retrofit some ordering into the existing API dirty-ring by: : : - relying on acquire/release semantics which are the default on x86, : but need to be explicit on arm64 : : - adding a new capability that indicate which flavor is supported, either : with explicit ordering (arm64) or both implicit and explicit (x86), : as suggested by Paolo at KVM Forum : : - documenting the requirements for this new capability on weakly ordered : architectures : : - updating the selftests to do the right thing : . KVM: selftests: dirty-log: Use KVM_CAP_DIRTY_LOG_RING_ACQ_REL if available KVM: selftests: dirty-log: Upgrade flag accesses to acquire/release semantics KVM: Document weakly ordered architecture requirements for dirty ring KVM: x86: Select CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL KVM: Add KVM_CAP_DIRTY_LOG_RING_ACQ_REL capability and config option KVM: Use acquire/release semantics when accessing dirty ring GFN state Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include/uapi/linux')
-rw-r--r--include/uapi/linux/kvm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index eed0315a77a6..0d5d4419139a 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1177,6 +1177,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_VM_DISABLE_NX_HUGE_PAGES 220
#define KVM_CAP_S390_ZPCI_OP 221
#define KVM_CAP_S390_CPU_TOPOLOGY 222
+#define KVM_CAP_DIRTY_LOG_RING_ACQ_REL 223
#ifdef KVM_CAP_IRQ_ROUTING