Re: [PATCH] scsi: virtio-scsi: Fix address translation failure ofHighMem pages used by sg list

[Sen Wang]

2012/7/25 Rolf Eike Beer <eike-kernel@xxxxxxxxx>:
> Am 25.07.2012 10:29, schrieb Wang Sen:
>
>> When using the commands below to write some data to a virtio-scsi LUN of
>> the
>> QEMU guest(32-bit) with 1G physical memory(qemu -m 1024), the qemu
>> will crash.
>>
>>         # sudo mkfs.ext4 /dev/sdb  (/dev/sdb is the virtio-scsi LUN.)
>>         # sudo mount /dev/sdb /mnt
>>         # dd if=/dev/zero of=/mnt/file bs=1M count=1024
>>
>> In current implementation, sg_set_buf is called to add buffers to sg
>> list which
>> is put into the virtqueue eventually.
>
>
> The next sentence is somehow broken:
>
>
>> But there are some HighMem pages in
>> table->sgl can not get virtual address by sg_virt.
>
>
> Maybe something like "But _if_ there are ... _you_ can not get ..."?

Thanks, I'll pay attention in next post.

>
> Eike
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
------------------------------------------
Wang Sen
Addr: XUPT,Xi'an,Shaanxi,China
Email: kelvin.xupt@xxxxxxxxx
------------------------------------------
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/