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authorAndre Przywara <andre.przywara@arm.com>2015-03-26 14:39:33 +0000
committerMarc Zyngier <marc.zyngier@arm.com>2015-03-26 21:43:14 +0000
commit9f199d0a0eeb8efb564ff41a6b9f819c4c0285ea (patch)
tree3152ce85a88129a5e29290aefdffc1772553e07d /virt
parentcf50a1eb43b98daa181714e40e22c8e5ad5007d6 (diff)
downloadkernel-9f199d0a0eeb8efb564ff41a6b9f819c4c0285ea.tar.gz
KVM: arm/arm64: simplify vgic_find_range() and callers
The vgic_find_range() function in vgic.c takes a struct kvm_exit_mmio argument, but actually only used the length field in there. Since we need to get rid of that structure in that part of the code anyway, let's rework the function (and it's callers) to pass the length argument to the function directly. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic-v2-emul.c2
-rw-r--r--virt/kvm/arm/vgic.c22
-rw-r--r--virt/kvm/arm/vgic.h3
3 files changed, 10 insertions, 17 deletions
diff --git a/virt/kvm/arm/vgic-v2-emul.c b/virt/kvm/arm/vgic-v2-emul.c
index ddb3135363d8..1dd183ecf96f 100644
--- a/virt/kvm/arm/vgic-v2-emul.c
+++ b/virt/kvm/arm/vgic-v2-emul.c
@@ -715,7 +715,7 @@ static int vgic_attr_regs_access(struct kvm_device *dev,
default:
BUG();
}
- r = vgic_find_range(ranges, &mmio, offset);
+ r = vgic_find_range(ranges, 4, offset);
if (unlikely(!r || !r->handle_mmio)) {
ret = -ENXIO;
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 21a3550d525c..8802ad73467f 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -713,16 +713,13 @@ void vgic_unqueue_irqs(struct kvm_vcpu *vcpu)
const
struct vgic_io_range *vgic_find_range(const struct vgic_io_range *ranges,
- struct kvm_exit_mmio *mmio,
- phys_addr_t offset)
+ int len, gpa_t offset)
{
- const struct vgic_io_range *r = ranges;
-
- while (r->len) {
- if (offset >= r->base &&
- (offset + mmio->len) <= (r->base + r->len))
- return r;
- r++;
+ while (ranges->len) {
+ if (offset >= ranges->base &&
+ (offset + len) <= (ranges->base + ranges->len))
+ return ranges;
+ ranges++;
}
return NULL;
@@ -813,7 +810,7 @@ bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
unsigned long offset;
offset = mmio->phys_addr - mmio_base;
- range = vgic_find_range(ranges, mmio, offset);
+ range = vgic_find_range(ranges, mmio->len, offset);
if (unlikely(!range || !range->handle_mmio)) {
pr_warn("Unhandled access %d %08llx %d\n",
mmio->is_write, mmio->phys_addr, mmio->len);
@@ -1986,10 +1983,7 @@ int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
int vgic_has_attr_regs(const struct vgic_io_range *ranges, phys_addr_t offset)
{
- struct kvm_exit_mmio dev_attr_mmio;
-
- dev_attr_mmio.len = 4;
- if (vgic_find_range(ranges, &dev_attr_mmio, offset))
+ if (vgic_find_range(ranges, 4, offset))
return 0;
else
return -ENXIO;
diff --git a/virt/kvm/arm/vgic.h b/virt/kvm/arm/vgic.h
index 6fccb969b169..01aa6228f88b 100644
--- a/virt/kvm/arm/vgic.h
+++ b/virt/kvm/arm/vgic.h
@@ -90,8 +90,7 @@ static inline bool is_in_range(phys_addr_t addr, unsigned long len,
const
struct vgic_io_range *vgic_find_range(const struct vgic_io_range *ranges,
- struct kvm_exit_mmio *mmio,
- phys_addr_t offset);
+ int len, gpa_t offset);
bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_exit_mmio *mmio,