Messages in this thread | | | Date | Mon, 5 Oct 2015 11:11:15 +0100 | Subject | Re: [PATCH v4] QEMU fw_cfg DMA interface documentation | From | Stefan Hajnoczi <> |
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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
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