summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorXiao Guangrong <xiaoguangrong.eric@gmail.com>2011-11-24 19:04:35 +0800
committerAvi Kivity <avi@redhat.com>2011-12-27 11:17:39 +0200
commit28a37544fb0223eb9805d2567b88f7360edec52a (patch)
tree83afb64f8448303f9486eb6c87980695611275ab /arch
parentbe6ba0f0962a39091c52eb9167ddea201fe80716 (diff)
downloadlinux-28a37544fb0223eb9805d2567b88f7360edec52a.tar.gz
linux-28a37544fb0223eb9805d2567b88f7360edec52a.tar.bz2
linux-28a37544fb0223eb9805d2567b88f7360edec52a.zip
KVM: introduce id_to_memslot function
Introduce id_to_memslot to get memslot by slot id Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/kvm/kvm-ia64.c2
-rw-r--r--arch/powerpc/kvm/book3s.c2
-rw-r--r--arch/x86/kvm/vmx.c6
-rw-r--r--arch/x86/kvm/x86.c18
4 files changed, 15 insertions, 13 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 42ad1f9c9f01..92d9f1e4740f 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1818,7 +1818,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
if (log->slot >= KVM_MEMORY_SLOTS)
goto out;
- memslot = &kvm->memslots->memslots[log->slot];
+ memslot = id_to_memslot(kvm->memslots, log->slot);
r = -ENOENT;
if (!memslot->dirty_bitmap)
goto out;
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index a459479995c6..e41ac6f7dcf1 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -498,7 +498,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
/* If nothing is dirty, don't bother messing with page tables. */
if (is_dirty) {
- memslot = &kvm->memslots->memslots[log->slot];
+ memslot = id_to_memslot(kvm->memslots, log->slot);
ga = memslot->base_gfn << PAGE_SHIFT;
ga_end = ga + (memslot->npages << PAGE_SHIFT);
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index ba24022f4575..8f19d91ec3e7 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2711,11 +2711,13 @@ static gva_t rmode_tss_base(struct kvm *kvm)
{
if (!kvm->arch.tss_addr) {
struct kvm_memslots *slots;
+ struct kvm_memory_slot *slot;
gfn_t base_gfn;
slots = kvm_memslots(kvm);
- base_gfn = slots->memslots[0].base_gfn +
- kvm->memslots->memslots[0].npages - 3;
+ slot = id_to_memslot(slots, 0);
+ base_gfn = slot->base_gfn + slot->npages - 3;
+
return base_gfn << PAGE_SHIFT;
}
return kvm->arch.tss_addr;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 917a287d21c8..b6776c613e6d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3520,7 +3520,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
if (log->slot >= KVM_MEMORY_SLOTS)
goto out;
- memslot = &kvm->memslots->memslots[log->slot];
+ memslot = id_to_memslot(kvm->memslots, log->slot);
r = -ENOENT;
if (!memslot->dirty_bitmap)
goto out;
@@ -3531,27 +3531,27 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
/* If nothing is dirty, don't bother messing with page tables. */
if (nr_dirty_pages) {
struct kvm_memslots *slots, *old_slots;
- unsigned long *dirty_bitmap;
+ unsigned long *dirty_bitmap, *dirty_bitmap_head;
- dirty_bitmap = memslot->dirty_bitmap_head;
- if (memslot->dirty_bitmap == dirty_bitmap)
- dirty_bitmap += n / sizeof(long);
- memset(dirty_bitmap, 0, n);
+ dirty_bitmap = memslot->dirty_bitmap;
+ dirty_bitmap_head = memslot->dirty_bitmap_head;
+ if (dirty_bitmap == dirty_bitmap_head)
+ dirty_bitmap_head += n / sizeof(long);
+ memset(dirty_bitmap_head, 0, n);
r = -ENOMEM;
slots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL);
if (!slots)
goto out;
memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots));
- memslot = &slots->memslots[log->slot];
- memslot->dirty_bitmap = dirty_bitmap;
+ memslot = id_to_memslot(slots, log->slot);
memslot->nr_dirty_pages = 0;
+ memslot->dirty_bitmap = dirty_bitmap_head;
update_memslots(slots, NULL);
old_slots = kvm->memslots;
rcu_assign_pointer(kvm->memslots, slots);
synchronize_srcu_expedited(&kvm->srcu);
- dirty_bitmap = old_slots->memslots[log->slot].dirty_bitmap;
kfree(old_slots);
write_protect_slot(kvm, memslot, dirty_bitmap, nr_dirty_pages);