From 5cc150279936a618187c42966a8a2f09177ac80a Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 14 Nov 2014 10:55:31 +0100 Subject: [PATCH] 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 Reviewed-by: Takuya Yoshikawa Signed-off-by: Paolo Bonzini --- virt/kvm/kvm_main.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 7fc77c0..751ece6 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); -- 2.7.4