We move sanity check and lock related parts to the arch independent code.
This will help future cleanups.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@xxxxxxxxxxxxx>
---
arch/ia64/kvm/kvm-ia64.c | 14 ++------------
arch/powerpc/kvm/book3s.c | 14 ++------------
arch/powerpc/kvm/booke.c | 2 +-
arch/s390/kvm/kvm-s390.c | 4 ++--
arch/x86/kvm/x86.c | 14 ++------------
include/linux/kvm_host.h | 4 ++--
virt/kvm/kvm_main.c | 24 ++++++++++++++++++++++++
7 files changed, 35 insertions(+), 41 deletions(-)
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index c3754bb..72efc39 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1815,24 +1815,15 @@ static void kvm_ia64_sync_dirty_log(struct kvm *kvm,
spin_unlock(&kvm->arch.dirty_log_lock);
}
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
- struct kvm_dirty_log *log)
+int kvm_arch_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
{
int r, i;
unsigned long n;
struct kvm_memory_slot *memslot;
unsigned long is_dirty = 0;
- mutex_lock(&kvm->slots_lock);
-
- r = -EINVAL;
- if (log->slot >= KVM_MEMORY_SLOTS)
- goto out;
-
memslot = &kvm->memslots->memslots[log->slot];
- r = -ENOENT;
- if (!memslot->dirty_bitmap)
- goto out;
kvm_ia64_sync_dirty_log(kvm, memslot);
@@ -1852,7 +1843,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
}
r = 0;
out:
- mutex_unlock(&kvm->slots_lock);
return r;
}
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 691ac31..f9b1290 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -1239,8 +1239,8 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
/*
* Get (and clear) the dirty memory log for a memory slot.
*/
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
- struct kvm_dirty_log *log)
+int kvm_arch_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
{
struct kvm_memory_slot *memslot;
struct kvm_vcpu *vcpu;
@@ -1249,16 +1249,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
int r, i;
unsigned long n;
- mutex_lock(&kvm->slots_lock);
-
- r = -EINVAL;
- if (log->slot >= KVM_MEMORY_SLOTS)
- goto out;
-
memslot = &kvm->memslots->memslots[log->slot];
- r = -ENOENT;
- if (!memslot->dirty_bitmap)
- goto out;
n = kvm_dirty_bitmap_bytes(memslot);
@@ -1282,7 +1273,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
r = 0;
out:
- mutex_unlock(&kvm->slots_lock);
return r;
}
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index c604277..5eb64b9 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -596,7 +596,7 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
return r;
}
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
+int kvm_arch_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
{
return -ENOTSUPP;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 4fe6865..09b7885 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -134,8 +134,8 @@ int kvm_dev_ioctl_check_extension(long ext)
/*
* Get (and clear) the dirty memory log for a memory slot.
*/
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
- struct kvm_dirty_log *log)
+int kvm_arch_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
{
return 0;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6e6659d..ecb5350 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3019,24 +3019,15 @@ static int kvm_vm_ioctl_reinject(struct kvm *kvm,
/*
* Get (and clear) the dirty memory log for a memory slot.
*/
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
- struct kvm_dirty_log *log)
+int kvm_arch_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
{
int r, i;
struct kvm_memory_slot *memslot;
unsigned long n;
unsigned long is_dirty = 0;
- mutex_lock(&kvm->slots_lock);
-
- r = -EINVAL;
- if (log->slot >= KVM_MEMORY_SLOTS)
- goto out;
-
memslot = &kvm->memslots->memslots[log->slot];
- r = -ENOENT;
- if (!memslot->dirty_bitmap)
- goto out;
n = kvm_dirty_bitmap_bytes(memslot);
@@ -3087,7 +3078,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
r = 0;
out:
- mutex_unlock(&kvm->slots_lock);
return r;
}
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 91ee311..0773d56 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -342,8 +342,8 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
int kvm_dev_ioctl_check_extension(long ext);
-int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
- struct kvm_dirty_log *log);
+int kvm_arch_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log);
int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
struct
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 39b4512..cdfe32a 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -776,6 +776,30 @@ int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
return kvm_set_memory_region(kvm, mem, user_alloc);
}
+static int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
+{
+ struct kvm_memory_slot *memslot;
+ int r;
+
+ mutex_lock(&kvm->slots_lock);
+
+ r = -EINVAL;
+ if (log->slot >= KVM_MEMORY_SLOTS)
+ goto out;
+
+ memslot = &kvm->memslots->memslots[log->slot];
+ r = -ENOENT;
+ if (!memslot->dirty_bitmap)
+ goto out;
+
+ r = kvm_arch_get_dirty_log(kvm, log);
+
+out:
+ mutex_unlock(&kvm->slots_lock);
+ return r;
+}
+
void kvm_disable_largepages(void)
{
largepages_enabled = false;
--
1.7.0.4
--
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