AcoSail/kernel_optimize_test
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KVM: arm/arm64: Get rid of its->initialized field

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The its->initialized doesn't bring much to the table, and creates
unnecessary ordering between setting the address and initializing it
(which amounts to exactly nothing).

Let's kill it altogether, making KVM_DEV_ARM_VGIC_CTRL_INIT the no-op
it deserves to be.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
This commit is contained in:
Marc Zyngier 2017-05-08 18:15:40 +01:00 committed by Christoffer Dall
parent 1aab6f468c
commit 6cc40f273b
2 changed files with 1 additions and 7 deletions
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1
include/kvm/arm_vgic.h
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@ -148,7 +148,6 @@ struct vgic_its {
gpa_t vgic_its_base; gpa_t vgic_its_base;
bool enabled; bool enabled;
bool initialized;
struct vgic_io_device iodev; struct vgic_io_device iodev;
struct kvm_device *dev; struct kvm_device *dev;

7
virt/kvm/arm/vgic/vgic-its.c
View File

@ -1545,9 +1545,6 @@ static int vgic_register_its_iodev(struct kvm *kvm, struct vgic_its *its)
struct vgic_io_device *iodev = &its->iodev; struct vgic_io_device *iodev = &its->iodev;
int ret; int ret;
if (!its->initialized)
return -EBUSY;
if (IS_VGIC_ADDR_UNDEF(its->vgic_its_base)) if (IS_VGIC_ADDR_UNDEF(its->vgic_its_base))
return -ENXIO; return -ENXIO;
@ -1597,7 +1594,6 @@ static int vgic_its_create(struct kvm_device *dev, u32 type)
INIT_LIST_HEAD(&its->collection_list); INIT_LIST_HEAD(&its->collection_list);
dev->kvm->arch.vgic.has_its = true; dev->kvm->arch.vgic.has_its = true;
its->initialized = false;
its->enabled = false; its->enabled = false;
its->dev = dev; its->dev = dev;
@ -2397,8 +2393,7 @@ static int vgic_its_set_attr(struct kvm_device *dev,
switch (attr->attr) { switch (attr->attr) {
case KVM_DEV_ARM_VGIC_CTRL_INIT: case KVM_DEV_ARM_VGIC_CTRL_INIT:
its->initialized = true; /* Nothing to do */
return 0; return 0;
case KVM_DEV_ARM_ITS_SAVE_TABLES: case KVM_DEV_ARM_ITS_SAVE_TABLES:
return abi->save_tables(its); return abi->save_tables(its);