Re: [Qemu-block] [Qemu-devel] [PULL 00/23] Block layer patches

[Max Reitz]

On 14.09.2015 11:57, Kevin Wolf wrote:
> Am 14.09.2015 um 11:46 hat Peter Maydell geschrieben:
>> On 11 September 2015 at 20:40, Kevin Wolf <address@hidden> wrote:
>>> The following changes since commit 30c38c90bd3f1bb105ebc069ac1821067c980b7c:
>>>
>>>   scripts/qemu-gdb: Add brief comment describing usage (2015-09-11 17:14:50 
>>> +0100)
>>>
>>> are available in the git repository at:
>>>
>>>   git://repo.or.cz/qemu/kevin.git tags/for-upstream
>>>
>>> for you to fetch changes up to 1fcbcc93872953d08cd35830d1169fed19196290:
>>>
>>>   qcow2: Make qcow2_alloc_bytes() more explicit (2015-09-11 20:03:02 +0200)
>>>
>>> ----------------------------------------------------------------
>>> Block layer patches
>>>
>>> ----------------------------------------------------------------
>>
>> Hi. I'm afraid this fails to build on 32-bit:
>>
>> /home/pm215/qemu/block/qcow2-refcount.c: In function 
>> ‘realloc_refcount_array’:
>> /home/pm215/qemu/block/qcow2-refcount.c:1294:16: error: cast to
>> pointer from integer of different size [-Werror=int-to-pointer-cast]
>>          memset((void *)((uintptr_t)new_ptr + old_byte_size), 0,
>>                 ^
>> cc1: all warnings being treated as errors
>> /home/pm215/qemu/rules.mak:57: recipe for target 'block/qcow2-refcount.o' 
>> failed
>> make: *** [block/qcow2-refcount.o] Error 1
>>
>> (old_byte_size is int64_t, so (uintptr_t)new_ptr + old_byte_size
>> becomes a 64-bit addition, and then you cast it to a 32-bit
>> pointer.)
> 
> Max, I think this is yours.

Indeed, I'll send a v3 for "qcow2: Make size_to_clusters() return
uint64_t" and "iotests: Add test for checking large image files".

You decide whether you are going to include them in a new pull request
or just drop them for now.

Max

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