Re: [Qemu-devel] [PATCH v3 13/29] migration/ram: ramblock_recv_bitmap_test_byte_offset

[Peter Xu <peterx@redhat.com>]

On Fri, Feb 16, 2018 at 01:16:09PM +0000, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> 
> Utility for testing the map when you already know the offset
> in the RAMBlock.
> 
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Reviewed-by: Peter Xu <peterx@redhat.com>

> ---
>  migration/ram.c | 5 +++++
>  migration/ram.h | 1 +
>  2 files changed, 6 insertions(+)
> 
> diff --git a/migration/ram.c b/migration/ram.c
> index 8333d8e35e..8db5e80500 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -169,6 +169,11 @@ int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr)
>                      rb->receivedmap);
>  }
>  
> +bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset)
> +{
> +    return test_bit(byte_offset >> TARGET_PAGE_BITS, rb->receivedmap);
> +}
> +
>  void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr)
>  {
>      set_bit_atomic(ramblock_recv_bitmap_offset(host_addr, rb), rb->receivedmap);
> diff --git a/migration/ram.h b/migration/ram.h
> index f3a227b4fc..63a37c4683 100644
> --- a/migration/ram.h
> +++ b/migration/ram.h
> @@ -60,6 +60,7 @@ int ram_postcopy_incoming_init(MigrationIncomingState *mis);
>  void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
>  
>  int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr);
> +bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset);
>  void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr);
>  void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr);
>  
> -- 
> 2.14.3
> 

-- 
Peter Xu