[PATCH 1/2] KVM: arm64: Add batch group constant and data structure to UAPI header
From: Yize Wang
Date: Fri Sep 18 2026 - 04:30:34 EST
Add KVM_DEV_ARM_VGIC_GRP_BATCH_REGS group ID, KVM_DEV_ARM_VGIC_BATCH_MAX
limit, and struct kvm_dev_arm_vgic_batch_entry for batch VGIC register
access. These UAPI definitions allow userspace to read/write multiple
VGIC registers in a single ioctl call.
Signed-off-by: Chuan Zheng <zhengchuan@xxxxxxxxxx>
Signed-off-by: Yize Wang <wangyize7@xxxxxxxxxx>
---
arch/arm64/include/uapi/asm/kvm.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index 019e5e3d892e..f84530274edd 100644
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -418,12 +418,22 @@ enum {
#define KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO 7
#define KVM_DEV_ARM_VGIC_GRP_ITS_REGS 8
#define KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ 9
+#define KVM_DEV_ARM_VGIC_GRP_BATCH_REGS 10
#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT 10
#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK \
(0x3fffffULL << KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT)
#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff
#define VGIC_LEVEL_INFO_LINE_LEVEL 0
+#define KVM_DEV_ARM_VGIC_BATCH_MAX 4096
+#define KVM_DEV_ARM_VGIC_ATTR_FLAG_LOCKED 12
+struct kvm_dev_arm_vgic_batch_entry {
+ __u32 group;
+ __u64 attr;
+ __u32 val;
+ __s32 error;
+};
+
#define KVM_DEV_ARM_VGIC_CTRL_INIT 0
#define KVM_DEV_ARM_ITS_SAVE_TABLES 1
#define KVM_DEV_ARM_ITS_RESTORE_TABLES 2
--
2.43.0