linux-kernel - [irqchip: irq/irqchip-next] KVM: arm64: Constify kvm_io_gic

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Date:   Mon, 20 Dec 2021 14:00:48 -0000
From:   "irqchip-bot for Rikard Falkeborn" <tip-bot2@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Rikard Falkeborn <rikard.falkeborn@...il.com>,
        Marc Zyngier <maz@...nel.org>, tglx@...utronix.de
Subject: [irqchip: irq/irqchip-next] KVM: arm64: Constify kvm_io_gic_ops

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     636dcd0204599f94680f8f87b46cef7c66034ac0
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/636dcd0204599f94680f8f87b46cef7c66034ac0
Author:        Rikard Falkeborn <rikard.falkeborn@...il.com>
AuthorDate:    Sat, 04 Dec 2021 22:35:18 +01:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Mon, 06 Dec 2021 08:34:06 

KVM: arm64: Constify kvm_io_gic_ops

The only usage of kvm_io_gic_ops is to make a comparison with its
address and to pass its address to kvm_iodevice_init() which takes a
pointer to const kvm_io_device_ops as input. Make it const to allow the
compiler to put it in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20211204213518.83642-1-rikard.falkeborn@gmail.com
---
 arch/arm64/kvm/vgic/vgic-mmio.c | 2 +-
 arch/arm64/kvm/vgic/vgic-mmio.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/vgic/vgic-mmio.c b/arch/arm64/kvm/vgic/vgic-mmio.c
index 48c6067..7068da0 100644
--- a/arch/arm64/kvm/vgic/vgic-mmio.c
+++ b/arch/arm64/kvm/vgic/vgic-mmio.c
@@ -1050,7 +1050,7 @@ static int dispatch_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
 	return 0;
 }
 
-struct kvm_io_device_ops kvm_io_gic_ops = {
+const struct kvm_io_device_ops kvm_io_gic_ops = {
 	.read = dispatch_mmio_read,
 	.write = dispatch_mmio_write,
 };
diff --git a/arch/arm64/kvm/vgic/vgic-mmio.h b/arch/arm64/kvm/vgic/vgic-mmio.h
index fefcca2..3fa696f 100644
--- a/arch/arm64/kvm/vgic/vgic-mmio.h
+++ b/arch/arm64/kvm/vgic/vgic-mmio.h
@@ -34,7 +34,7 @@ struct vgic_register_region {
 	};
 };
 
-extern struct kvm_io_device_ops kvm_io_gic_ops;
+extern const struct kvm_io_device_ops kvm_io_gic_ops;
 
 #define VGIC_ACCESS_8bit	1
 #define VGIC_ACCESS_32bit	2