Re: [Qemu-devel] [PATCH v15 7/9] Add XBZRLE to ram_save_block and ram_save_live

[Orit Wasserman <owasserm@redhat.com>]

On 07/05/2012 05:04 PM, Eric Blake wrote:
> On 07/05/2012 06:51 AM, Orit Wasserman wrote:
>> In the outgoing migration check to see if the page is cached and
>> changed than send compressed page by using save_xbrle_page function.
>> In the incoming migration check to see if RAM_SAVE_FLAG_XBRLE is set
>> and decompress the page (by using load_xbrle function).
>>
>> Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com>
>> Signed-off-by: Petter Svard <petters@cs.umu.se>
>> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com>
>> Signed-off-by: Orit Wasserman <owasserm@redhat.com>
>> ---
> 
>> +static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
>> +                            ram_addr_t current_addr, RAMBlock *block,
>> +                            ram_addr_t offset, int cont, int stage)
>> +{
>> +    int encoded_len = 0, bytes_sent = -1, ret = -1;
>> +    XBZRLEHeader hdr = {
>> +        .xh_len = 0,
>> +        .xh_flags = 0,
>> +    };
>> +    uint8_t *prev_cached_page;
>> +
>> +    /* Stage 1 cache the page and exit.
>> +       Stage 2 check to see if page is cached , if not cache the page.
> 
> No space before comma in English comments:
> 
> s/ ,/,/
> 
>> +    /* XBZRLE encoding (if there is no overflow) */
>> +    encoded_len = xbzrle_encode_buffer(prev_cached_page, current_data,
>> +                                       TARGET_PAGE_SIZE, XBZRLE.encoded_buf,
>> +                                       TARGET_PAGE_SIZE);
>> +    if (encoded_len == 0) {
>> +        DPRINTF("Unmodifed page skipping\n");
> 
> s/Unmodifed/Unmodified/
> 
> I mentioned in my v13 review changing this to:
> 
> s/Unmodifed page skipping/Skipping unmodified page/
> 
> it looks like you didn't pick up my v13 comments yet (and my fault for
> not complaining at v14).  As a result, I stopped reviewing here.
> 
I'm really sorry I missed this, I will fix it for next version

Thanks,
Orit