diff options
| author | Tang Chen <tangchen@cn.fujitsu.com> | 2014-09-16 18:41:58 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-17 13:10:11 +0200 |
| commit | a255d4795f83cf3e6a1c7d5ab998392d9413298c (patch) | |
| tree | 79c39a27f4b9e3eb0707e6726d11b80397b6d996 /arch/x86/kvm/x86.c | |
| parent | 80ce1639727e9d38729c34f162378508c307ca25 (diff) | |
| download | linux-a255d4795f83cf3e6a1c7d5ab998392d9413298c.tar.gz | |
kvm: Remove ept_identity_pagetable from struct kvm_arch.
kvm_arch->ept_identity_pagetable holds the ept identity pagetable page. But
it is never used to refer to the page at all.
In vcpu initialization, it indicates two things:
1. indicates if ept page is allocated
2. indicates if a memory slot for identity page is initialized
Actually, kvm_arch->ept_identity_pagetable_done is enough to tell if the ept
identity pagetable is initialized. So we can remove ept_identity_pagetable.
NOTE: In the original code, ept identity pagetable page is pinned in memroy.
As a result, it cannot be migrated/hot-removed. After this patch, since
kvm_arch->ept_identity_pagetable is removed, ept identity pagetable page
is no longer pinned in memory. And it can be migrated/hot-removed.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Gleb Natapov <gleb@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 68660b31457e..2d7f65daa8d0 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7273,8 +7273,6 @@ void kvm_arch_destroy_vm(struct kvm *kvm) kvm_free_vcpus(kvm); if (kvm->arch.apic_access_page) put_page(kvm->arch.apic_access_page); - if (kvm->arch.ept_identity_pagetable) - put_page(kvm->arch.ept_identity_pagetable); kfree(rcu_dereference_check(kvm->arch.apic_map, 1)); } |