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KVM: Introduce kvm_memory_slot::arch and move lpage_info into it

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Some members of kvm_memory_slot are not used by every architecture.

This patch is the first step to make this difference clear by
introducing kvm_memory_slot::arch;  lpage_info is moved into it.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Takuya Yoshikawa
2012-02-08 13:02:18 +09:00
committed by Avi Kivity
parent 189a2f7b24
commit db3fe4eb45
11 changed files with 122 additions and 68 deletions
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11
include/linux/kvm_host.h
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@@ -171,11 +171,6 @@ static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
*/
#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
struct kvm_lpage_info {
unsigned long rmap_pde;
int write_count;
};
struct kvm_memory_slot {
gfn_t base_gfn;
unsigned long npages;
@@ -184,7 +179,7 @@ struct kvm_memory_slot {
unsigned long *dirty_bitmap;
unsigned long *dirty_bitmap_head;
unsigned long nr_dirty_pages;
struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
struct kvm_arch_memory_slot arch;
unsigned long userspace_addr;
int user_alloc;
int id;
@@ -376,6 +371,9 @@ int kvm_set_memory_region(struct kvm *kvm,
int __kvm_set_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
int user_alloc);
void kvm_arch_free_memslot(struct kvm_memory_slot *free,
struct kvm_memory_slot *dont);
int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages);
int kvm_arch_prepare_memory_region(struct kvm *kvm,
struct kvm_memory_slot *memslot,
struct kvm_memory_slot old,
@@ -385,6 +383,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
struct kvm_memory_slot old,
int user_alloc);
bool kvm_largepages_enabled(void);
void kvm_disable_largepages(void);
void kvm_arch_flush_shadow(struct kvm *kvm);