Factor out the core register modifier functionality from the entry
points from the register description table, and only call the
prepare/finish functions from the guest path, not the uaccess path.
Signed-off-by: Christoffer Dall <cdall@xxxxxxxxxx>
---
virt/kvm/arm/vgic/vgic-mmio-v2.c | 6 +++--
virt/kvm/arm/vgic/vgic-mmio-v3.c | 8 ++++---
virt/kvm/arm/vgic/vgic-mmio.c | 50 ++++++++++++++++++++++++++++++++++------
virt/kvm/arm/vgic/vgic-mmio.h | 8 +++++++
4 files changed, 60 insertions(+), 12 deletions(-)
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v2.c b/virt/kvm/arm/vgic/vgic-mmio-v2.c
index 95543a2..8bafe9a 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v2.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v2.c
@@ -311,10 +311,12 @@ static const struct vgic_register_region vgic_v2_dist_registers[] = {
vgic_mmio_read_pending, vgic_mmio_write_cpending, NULL, NULL, 1,
VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ(GIC_DIST_ACTIVE_SET,
- vgic_mmio_read_active, vgic_mmio_write_sactive, NULL, NULL, 1,
+ vgic_mmio_read_active, vgic_mmio_write_sactive,
+ NULL, vgic_mmio_uaccess_write_sactive, 1,
VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ(GIC_DIST_ACTIVE_CLEAR,
- vgic_mmio_read_active, vgic_mmio_write_cactive, NULL, NULL, 1,
+ vgic_mmio_read_active, vgic_mmio_write_cactive,
+ NULL, vgic_mmio_uaccess_write_cactive, 1,
VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ(GIC_DIST_PRI,
vgic_mmio_read_priority, vgic_mmio_write_priority, NULL, NULL,
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 99da1a2..23c0d564 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -456,11 +456,13 @@ static const struct vgic_register_region vgic_v3_dist_registers[] = {
vgic_mmio_read_raz, vgic_mmio_write_wi, 1,
VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ_SHARED(GICD_ISACTIVER,
- vgic_mmio_read_active, vgic_mmio_write_sactive, NULL, NULL, 1,
+ vgic_mmio_read_active, vgic_mmio_write_sactive,
+ NULL, vgic_mmio_uaccess_write_sactive, 1,
VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ_SHARED(GICD_ICACTIVER,
- vgic_mmio_read_active, vgic_mmio_write_cactive, NULL, NULL, 1,
- VGIC_ACCESS_32bit),
+ vgic_mmio_read_active, vgic_mmio_write_cactive,
+ NULL, vgic_mmio_uaccess_write_cactive,
+ 1, VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ_SHARED(GICD_IPRIORITYR,
vgic_mmio_read_priority, vgic_mmio_write_priority, NULL, NULL,
8, VGIC_ACCESS_32bit | VGIC_ACCESS_8bit),
diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c
index 1c17b2a..64cbcb4 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.c
+++ b/virt/kvm/arm/vgic/vgic-mmio.c
@@ -251,38 +251,74 @@ static void vgic_change_active_finish(struct kvm_vcpu *vcpu, u32 intid)
kvm_arm_resume_guest(vcpu->kvm);
}
-void vgic_mmio_write_cactive(struct kvm_vcpu *vcpu,
- gpa_t addr, unsigned int len,
- unsigned long val)
+static void __vgic_mmio_write_cactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
{
u32 intid = VGIC_ADDR_TO_INTID(addr, 1);
int i;
- vgic_change_active_prepare(vcpu, intid);
for_each_set_bit(i, &val, len * 8) {
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i);
vgic_mmio_change_active(vcpu, irq, false);
vgic_put_irq(vcpu->kvm, irq);
}
- vgic_change_active_finish(vcpu, intid);
}
-void vgic_mmio_write_sactive(struct kvm_vcpu *vcpu,
+void vgic_mmio_write_cactive(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len,
unsigned long val)
{
u32 intid = VGIC_ADDR_TO_INTID(addr, 1);
- int i;
vgic_change_active_prepare(vcpu, intid);
+
+ __vgic_mmio_write_cactive(vcpu, addr, len, val);
+
+ vgic_change_active_finish(vcpu, intid);
+}
+
+void vgic_mmio_uaccess_write_cactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ __vgic_mmio_write_cactive(vcpu, addr, len, val);
+}
+
+static void __vgic_mmio_write_sactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ u32 intid = VGIC_ADDR_TO_INTID(addr, 1);
+ int i;
+
for_each_set_bit(i, &val, len * 8) {
struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, intid + i);
vgic_mmio_change_active(vcpu, irq, true);
vgic_put_irq(vcpu->kvm, irq);
}
+}
+
+void vgic_mmio_write_sactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ u32 intid = VGIC_ADDR_TO_INTID(addr, 1);
+
+ vgic_change_active_prepare(vcpu, intid);
+
+ __vgic_mmio_write_sactive(vcpu, addr, len, val);
+
vgic_change_active_finish(vcpu, intid);
}
+void vgic_mmio_uaccess_write_sactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ __vgic_mmio_write_sactive(vcpu, addr, len, val);
+}
+
unsigned long vgic_mmio_read_priority(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len)
{
diff --git a/virt/kvm/arm/vgic/vgic-mmio.h b/virt/kvm/arm/vgic/vgic-mmio.h
index 27924a3..5693f6df 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.h
+++ b/virt/kvm/arm/vgic/vgic-mmio.h
@@ -167,6 +167,14 @@ void vgic_mmio_write_sactive(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len,
unsigned long val);
+void vgic_mmio_uaccess_write_cactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val);
+
+void vgic_mmio_uaccess_write_sactive(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val);
+
unsigned long vgic_mmio_read_priority(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len);
--
2.9.0
