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@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 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; 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