KVM: Documentation: Correct the VGIC V2 CPU interface addr space size

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

In arch/arm64/include/uapi/asm/kvm.h, we have

#define KVM_VGIC_V2_CPU_SIZE 0x2000

So the CPU interface address space should cover 8 KByte not 4 KByte.

Signed-off-by: Changyuan Lyu <changyuanl@google.com>
Link: https://lore.kernel.org/r/20240623164542.2999626-3-changyuanl@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

authored by

Changyuan Lyu and committed by

Oliver Upton 2 years ago 810ecbef 03bd36a3

+1 -1

1 changed file

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Documentation

virt

kvm

devices

arm-vgic.rst

+1 -1

Documentation/virt/kvm/devices/arm-vgic.rst

··· 31 31 KVM_VGIC_V2_ADDR_TYPE_CPU (rw, 64-bit) 32 32 Base address in the guest physical address space of the GIC virtual cpu 33 33 interface register mappings. Only valid for KVM_DEV_TYPE_ARM_VGIC_V2. 34 - This address needs to be 4K aligned and the region covers 4 KByte. 34 + This address needs to be 4K aligned and the region covers 8 KByte. 35 35 36 36 Errors: 37 37