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authorPaolo Bonzini <pbonzini@redhat.com>2014-11-14 10:55:31 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2014-11-17 12:16:13 +0100
commit5cc150279936a618187c42966a8a2f09177ac80a (patch)
treeb340d5adcdc63dfe0417764175ce22d3fa06250b /virt
parentf2a81036516e2b97c07c49dd6d51d36bfa43593d (diff)
downloadlinux-5cc150279936a618187c42966a8a2f09177ac80a.tar.gz
kvm: simplify update_memslots invocation
The update_memslots invocation is only needed in one case. Make the code clearer by moving it to __kvm_set_memory_region, and removing the wrapper around insert_memslot. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c20
1 files changed, 6 insertions, 14 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 7fc77c0f98f..751ece6a595 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -674,8 +674,8 @@ static int kvm_create_dirty_bitmap(struct kvm_memory_slot *memslot)
* takes advantage of having initially sorted array and
* known changed memslot position.
*/
-static void insert_memslot(struct kvm_memslots *slots,
- struct kvm_memory_slot *new)
+static void update_memslots(struct kvm_memslots *slots,
+ struct kvm_memory_slot *new)
{
int id = new->id;
int i = slots->id_to_index[id];
@@ -704,14 +704,6 @@ static void insert_memslot(struct kvm_memslots *slots,
slots->id_to_index[mslots[i].id] = i;
}
-static void update_memslots(struct kvm_memslots *slots,
- struct kvm_memory_slot *new)
-{
- if (new) {
- insert_memslot(slots, new);
- }
-}
-
static int check_memory_region_flags(struct kvm_userspace_memory_region *mem)
{
u32 valid_flags = KVM_MEM_LOG_DIRTY_PAGES;
@@ -727,7 +719,7 @@ static int check_memory_region_flags(struct kvm_userspace_memory_region *mem)
}
static struct kvm_memslots *install_new_memslots(struct kvm *kvm,
- struct kvm_memslots *slots, struct kvm_memory_slot *new)
+ struct kvm_memslots *slots)
{
struct kvm_memslots *old_memslots = kvm->memslots;
@@ -738,7 +730,6 @@ static struct kvm_memslots *install_new_memslots(struct kvm *kvm,
WARN_ON(old_memslots->generation & 1);
slots->generation = old_memslots->generation + 1;
- update_memslots(slots, new);
rcu_assign_pointer(kvm->memslots, slots);
synchronize_srcu_expedited(&kvm->srcu);
@@ -875,7 +866,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
slot = id_to_memslot(slots, mem->slot);
slot->flags |= KVM_MEMSLOT_INVALID;
- old_memslots = install_new_memslots(kvm, slots, NULL);
+ old_memslots = install_new_memslots(kvm, slots);
/* slot was deleted or moved, clear iommu mapping */
kvm_iommu_unmap_pages(kvm, &old);
@@ -906,7 +897,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
memset(&new.arch, 0, sizeof(new.arch));
}
- old_memslots = install_new_memslots(kvm, slots, &new);
+ update_memslots(slots, &new);
+ old_memslots = install_new_memslots(kvm, slots);
kvm_arch_commit_memory_region(kvm, mem, &old, change);