diff options
| author | Paul Mackerras <paulus@samba.org> | 2011-12-15 06:03:22 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 16:52:39 +0400 |
| commit | 82ed36164c8a8ee685ea3fb3c4f741214ac070ca (patch) | |
| tree | 259f2e7a839d7506d7fbb9a3be6763ad2f5e9fd2 /arch/powerpc/include/asm/kvm_book3s.h | |
| parent | 55514893739d28f095f19b012133eea4cb4a9390 (diff) | |
| download | linux-82ed36164c8a8ee685ea3fb3c4f741214ac070ca.tar.xz | |
KVM: PPC: Book3s HV: Implement get_dirty_log using hardware changed bit
This changes the implementation of kvm_vm_ioctl_get_dirty_log() for
Book3s HV guests to use the hardware C (changed) bits in the guest
hashed page table. Since this makes the implementation quite different
from the Book3s PR case, this moves the existing implementation from
book3s.c to book3s_pr.c and creates a new implementation in book3s_hv.c.
That implementation calls kvmppc_hv_get_dirty_log() to do the actual
work by calling kvm_test_clear_dirty on each page. It iterates over
the HPTEs, clearing the C bit if set, and returns 1 if any C bit was
set (including the saved C bit in the rmap entry).
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 33fdc09508a1..3c3edee672aa 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -156,6 +156,8 @@ extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, long pte_index, unsigned long pteh, unsigned long ptel); extern long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, long pte_index, unsigned long pteh, unsigned long ptel); +extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, + struct kvm_memory_slot *memslot); extern void kvmppc_entry_trampoline(void); extern void kvmppc_hv_entry_trampoline(void); |