[PATCH] 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 <redacted>
---
 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 48c6067fc5ec..7068da080799 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 fefcca2b14dc..3fa696f198a3 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

-- 
2.34.1


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On Sat, 4 Dec 2021 22:35:18 +0100, Rikard Falkeborn wrote:

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.

Applied to next, thanks!

[1/1] KVM: arm64: Constify kvm_io_gic_ops
      commit: 636dcd0204599f94680f8f87b46cef7c66034ac0

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.



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