lkml.org 
[lkml]   [2015]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v4] QEMU fw_cfg DMA interface documentation
From
On Mon, Oct 5, 2015 at 11:06 AM, Marc Marí <markmb@redhat.com> wrote:
> On Mon, 5 Oct 2015 09:20:55 +0100
> Stefan Hajnoczi <stefanha@gmail.com> wrote:
>
>> On Thu, Oct 1, 2015 at 1:15 PM, Marc Marí <markmb@redhat.com> wrote:
>> > +Additionaly, if the DMA interface is available then a read to the
>> > DMA Address +will return 0x51454d5520434647 ("QEMU CFG" in
>> > big-endian format).
>>
>> What does this mean?
>>
>
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg325546.html
>
> Proposed by Kevin O'Connor in v3.
>
> (I could not find this thread in gnu.org or gmane archives. It's
> strange).

The following is clearer to me:

If the DMA interface is available, then reading the DMA Address
Register returns 0x51454d5520434647 ("QEMU CFG" in big-endian format).

Stefan


\
 
 \ /
  Last update: 2015-10-05 12:21    [W:0.464 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site