Re: [Qemu-devel] [PATCH 1/4] exec: round up size on MR resize

[Paolo Bonzini <pbonzini@redhat.com>]

On 17/02/2015 14:45, Igor Mammedov wrote:
> On Tue, 17 Feb 2015 11:05:36 +0100
> "Michael S. Tsirkin" <mst@redhat.com> wrote:
> 
>> Block size must fundamentally be a multiple of target page size.
>> Aligning automatically removes need to worry about the alignment
>> from callers.
>>
>> Note: the only caller of qemu_ram_resize (acpi) already happens to have
>> size padded to a power of 2, but we would like to drop the padding in
>> ACPI core, and don't want to expose target page size knowledge to ACPI.
>>
>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
> 
>> ---
>>  exec.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/exec.c b/exec.c
>> index 6b79ad1..2433406 100644
>> --- a/exec.c
>> +++ b/exec.c
>> @@ -1298,6 +1298,8 @@ int qemu_ram_resize(ram_addr_t base, ram_addr_t newsize, Error **errp)
>>  
>>      assert(block);
>>  
>> +    newsize = TARGET_PAGE_ALIGN(newsize);
>> +
>>      if (block->used_length == newsize) {
>>          return 0;
>>      }
> 

Acked-by: Paolo Bonzini <ponzini@redhat.com>