KVM: arm64: Simplify argument passing to vgic_uaccess_[read|write]

vgic_uaccess() takes a struct vgic_io_device argument, converts it
to a struct kvm_io_device and passes it to the read/write accessor
functions, which convert it back to a struct vgic_io_device.
Avoid the indirection by passing the struct vgic_io_device argument
directly to vgic_uaccess_{read,write}.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210405163941.510258-7-eric.auger@redhat.com

diff --git a/arch/arm64/kvm/vgic/vgic-mmio.c b/arch/arm64/kvm/vgic/vgic-mmio.c
index b2d73fc0d1ef48091ee428f915cad6054b3c3c21..48c6067fc5ecb0dd916727d8b4d8e3dc906ed224 100644 (file)
--- a/arch/arm64/kvm/vgic/vgic-mmio.c
+++ b/arch/arm64/kvm/vgic/vgic-mmio.c
@@ -938,10 +938,9 @@ vgic_get_mmio_region(struct kvm_vcpu *vcpu, struct vgic_io_device *iodev,
        return region;
 }
 
-static int vgic_uaccess_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+static int vgic_uaccess_read(struct kvm_vcpu *vcpu, struct vgic_io_device *iodev,
                             gpa_t addr, u32 *val)
 {
-       struct vgic_io_device *iodev = kvm_to_vgic_iodev(dev);
        const struct vgic_register_region *region;
        struct kvm_vcpu *r_vcpu;
 
@@ -960,10 +959,9 @@ static int vgic_uaccess_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
        return 0;
 }
 
-static int vgic_uaccess_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,
+static int vgic_uaccess_write(struct kvm_vcpu *vcpu, struct vgic_io_device *iodev,
                              gpa_t addr, const u32 *val)
 {
-       struct vgic_io_device *iodev = kvm_to_vgic_iodev(dev);
        const struct vgic_register_region *region;
        struct kvm_vcpu *r_vcpu;
 
@@ -986,9 +984,9 @@ int vgic_uaccess(struct kvm_vcpu *vcpu, struct vgic_io_device *dev,
                 bool is_write, int offset, u32 *val)
 {
        if (is_write)
-               return vgic_uaccess_write(vcpu, &dev->dev, offset, val);
+               return vgic_uaccess_write(vcpu, dev, offset, val);
        else
-               return vgic_uaccess_read(vcpu, &dev->dev, offset, val);
+               return vgic_uaccess_read(vcpu, dev, offset, val);
 }
 
 static int dispatch_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev,