[PATCH v2 4/4] KVM: cleanup: make kvm_vm_ioctl_get_dirty_log() arch independent

Takuya Yoshikawa
2010-06-23T06:02:59Z

kvm_vm_ioctl_get_dirty_log() is now implemented as arch dependent function.
But now that we know what is actually arch dependent, we can split this into
arch dependent part and arch independent part easily.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya-gVGce1chcLdL9jVzuh4AOg@public.gmane.org>
---
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 da0c133..86b6b1d 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_vm_ioctl_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);

@@ -1855,7 +1846,6 @@ 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 bea6f7c..884d4a5 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -1179,8 +1179,8 @@ 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_vm_ioctl_get_dirty_log(struct kvm *kvm,
+ struct kvm_dirty_log *log)
{
struct kvm_memory_slot *memslot;
struct kvm_vcpu *vcpu;
@@ -1189,16 +1189,7 @@ 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);

@@ -1226,7 +1217,6 @@ 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 8d4e35f..376b586 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -565,7 +565,7 @@ 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_vm_ioctl_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 47acdb1..159aec2 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_vm_ioctl_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 e18e68f..ce4c603 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2861,24 +2861,15 @@ 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_vm_ioctl_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);

@@ -2929,7 +2920,6 @@ 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 b51e6b2..9289d1a 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -336,8 +336,8 @@ 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_vm_ioctl_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 8859049..bf3d273 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -773,6 +773,30 @@ 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_vm_ioctl_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