From: Marc Zyngier Date: Mon, 14 Jul 2025 12:26:28 +0000 (+0100) Subject: KVM: arm64: Let GICv3 save/restore honor visibility attribute X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d14c97145621632caaccf89a45c9b74ad36dab8;p=thirdparty%2Flinux.git 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: Marc Zyngier Link: https://lore.kernel.org/r/20250714122634.3334816-6-maz@kernel.org Signed-off-by: Oliver Upton --- diff --git a/arch/arm64/kvm/vgic-sys-reg-v3.c b/arch/arm64/kvm/vgic-sys-reg-v3.c index 5eacb4b3250a1..6f40225c4a3ff 100644 --- a/arch/arm64/kvm/vgic-sys-reg-v3.c +++ b/arch/arm64/kvm/vgic-sys-reg-v3.c @@ -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;