Gavin Shan <gs...@redhat.com> wrote:
> When dirty ring is enabled on ARM64, the backup bitmap may be used
> to track the dirty pages in no-running-vcpu situations. The original
> bitmap is the primary one, used for the dirty ring buffer. We need
> the secondary bitmap to collect the backup bitmap for ARM64.
>
> No functional change intended.
>
> Signed-off-by: Gavin Shan <gs...@redhat.com>
> ---
> accel/kvm/kvm-all.c | 50 ++++++++++++++++++++++++++++++----------
> include/sysemu/kvm_int.h | 1 +
> 2 files changed, 39 insertions(+), 12 deletions(-)
>
> diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
> index 01a6a026af..1a93985574 100644
> --- a/accel/kvm/kvm-all.c
> +++ b/accel/kvm/kvm-all.c
> @@ -553,13 +553,29 @@ static void kvm_log_stop(MemoryListener *listener,
> }
> }
>
> +static unsigned long *kvm_slot_dirty_bitmap(KVMSlot *slot, bool primary)
> +{
> + if (primary) {
> + return slot->dirty_bmap;
> + }
> +
> + return slot->dirty_bmap +
> + slot->dirty_bmap_size / sizeof(slot->dirty_bmap[0]);
> +}
Why?
Just use two bitmaps and call it a day.
Later, Juan.
