Commit 1d14c971 authored by Marc Zyngier's avatar Marc Zyngier Committed by Oliver Upton
Browse files

KVM: arm64: Let GICv3 save/restore honor visibility attribute 



The GICv3 save/restore code never needed any visibility attribute,
but that's about to change. Make vgic_v3_has_cpu_sysregs_attr()
check the visibility in case a register is hidden.

Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250714122634.3334816-6-maz@kernel.org


Signed-off-by: default avatarOliver Upton <oliver.upton@linux.dev>
parent ce7a1cff

arch/arm64/kvm/vgic-sys-reg-v3.c

+6 −2
Original line number Diff line number Diff line
@@ -341,8 +341,12 @@ static u64 attr_to_id(u64 attr) 


int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr)

{

	if (get_reg_by_id(attr_to_id(attr->attr), gic_v3_icc_reg_descs,

			  ARRAY_SIZE(gic_v3_icc_reg_descs)))

	const struct sys_reg_desc *r;



	r = get_reg_by_id(attr_to_id(attr->attr), gic_v3_icc_reg_descs,

			  ARRAY_SIZE(gic_v3_icc_reg_descs));



	if (r && !sysreg_hidden(vcpu, r))

		return 0;



	return -ENXIO;