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authorMarcelo Tosatti <mtosatti@redhat.com>2009-12-23 14:35:26 -0200
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:35:45 -0300
commit79fac95ecfa3969aab8119d37ccd7226165f933a (patch)
tree4103169c7fd2b7fb1ba95dae2db6b3f365476b9d /arch
parentf656ce0185cabbbb0cf96877306879661297c7ad (diff)
KVM: convert slots_lock to a mutex
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/kvm/kvm-ia64.c4
-rw-r--r--arch/powerpc/kvm/book3s.c4
-rw-r--r--arch/x86/kvm/i8254.c2
-rw-r--r--arch/x86/kvm/i8259.c4
-rw-r--r--arch/x86/kvm/vmx.c8
-rw-r--r--arch/x86/kvm/x86.c16
6 files changed, 19 insertions, 19 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index d5e384641275..e6ac549f8d55 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1834,7 +1834,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
struct kvm_memory_slot *memslot;
int is_dirty = 0;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
spin_lock(&kvm->arch.dirty_log_lock);
r = kvm_ia64_sync_dirty_log(kvm, log);
@@ -1854,7 +1854,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
}
r = 0;
out:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
spin_unlock(&kvm->arch.dirty_log_lock);
return r;
}
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index bb8873dcb20f..492dcc198dd3 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -857,7 +857,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
int is_dirty = 0;
int r, n;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
r = kvm_get_dirty_log(kvm, log, &is_dirty);
if (r)
@@ -879,7 +879,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
r = 0;
out:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
return r;
}
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 4b433de02e5b..6a74246f80c6 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -605,7 +605,7 @@ static const struct kvm_io_device_ops speaker_dev_ops = {
.write = speaker_ioport_write,
};
-/* Caller must have writers lock on slots_lock */
+/* Caller must hold slots_lock */
struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)
{
struct kvm_pit *pit;
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index b7d145b20953..d5753a75d58c 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -533,9 +533,9 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm)
* Initialize PIO device
*/
kvm_iodevice_init(&s->dev, &picdev_ops);
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, &s->dev);
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
if (ret < 0) {
kfree(s);
return NULL;
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 22ab7137d1d0..f04e2ff21383 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2223,7 +2223,7 @@ static int alloc_apic_access_page(struct kvm *kvm)
struct kvm_userspace_memory_region kvm_userspace_mem;
int r = 0;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
if (kvm->arch.apic_access_page)
goto out;
kvm_userspace_mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;
@@ -2236,7 +2236,7 @@ static int alloc_apic_access_page(struct kvm *kvm)
kvm->arch.apic_access_page = gfn_to_page(kvm, 0xfee00);
out:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
return r;
}
@@ -2245,7 +2245,7 @@ static int alloc_identity_pagetable(struct kvm *kvm)
struct kvm_userspace_memory_region kvm_userspace_mem;
int r = 0;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
if (kvm->arch.ept_identity_pagetable)
goto out;
kvm_userspace_mem.slot = IDENTITY_PAGETABLE_PRIVATE_MEMSLOT;
@@ -2260,7 +2260,7 @@ static int alloc_identity_pagetable(struct kvm *kvm)
kvm->arch.ept_identity_pagetable = gfn_to_page(kvm,
kvm->arch.ept_identity_map_addr >> PAGE_SHIFT);
out:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
return r;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 53bc06a68105..aff3479867a8 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2208,14 +2208,14 @@ static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
if (kvm_nr_mmu_pages < KVM_MIN_ALLOC_MMU_PAGES)
return -EINVAL;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
spin_lock(&kvm->mmu_lock);
kvm_mmu_change_mmu_pages(kvm, kvm_nr_mmu_pages);
kvm->arch.n_requested_mmu_pages = kvm_nr_mmu_pages;
spin_unlock(&kvm->mmu_lock);
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
return 0;
}
@@ -2292,7 +2292,7 @@ static int kvm_vm_ioctl_set_memory_alias(struct kvm *kvm,
if (!aliases)
goto out;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
/* invalidate any gfn reference in case of deletion/shrinking */
memcpy(aliases, kvm->arch.aliases, sizeof(struct kvm_mem_aliases));
@@ -2328,7 +2328,7 @@ static int kvm_vm_ioctl_set_memory_alias(struct kvm *kvm,
r = 0;
out_unlock:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
out:
return r;
}
@@ -2462,7 +2462,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
unsigned long is_dirty = 0;
unsigned long *dirty_bitmap = NULL;
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
r = -EINVAL;
if (log->slot >= KVM_MEMORY_SLOTS)
@@ -2512,7 +2512,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
out_free:
vfree(dirty_bitmap);
out:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
return r;
}
@@ -2625,7 +2625,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
sizeof(struct kvm_pit_config)))
goto out;
create_pit:
- down_write(&kvm->slots_lock);
+ mutex_lock(&kvm->slots_lock);
r = -EEXIST;
if (kvm->arch.vpit)
goto create_pit_unlock;
@@ -2634,7 +2634,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
if (kvm->arch.vpit)
r = 0;
create_pit_unlock:
- up_write(&kvm->slots_lock);
+ mutex_unlock(&kvm->slots_lock);
break;
case KVM_IRQ_LINE_STATUS:
case KVM_IRQ_LINE: {