Groups > linux.kernel > #1201699

Re: [PATCH] QEMU fw_cfg DMA interface documentation

From	Stefan Hajnoczi <stefanha@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] QEMU fw_cfg DMA interface documentation
Date	2015-08-06 14:30 +0200
Message-ID	<pUst4-oN-17@gated-at.bofh.it> (permalink)
References	<pUrdE-77S-13@gated-at.bofh.it> <pUrdE-77S-11@gated-at.bofh.it> <pUsjo-dn-13@gated-at.bofh.it> <pUst4-oN-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, Aug 6, 2015 at 1:22 PM, Laszlo Ersek <lersek@redhat.com> wrote:
> On 08/06/15 14:12, Stefan Hajnoczi wrote:
>> On Thu, Aug 6, 2015 at 12:03 PM, Marc Marí <markmb@redhat.com> wrote:
>>> Add fw_cfg DMA interface specfication in the fw_cfg documentation.
>>>
>>> Signed-off-by: Marc Marí <markmb@redhat.com>
>>> ---
>>>  Documentation/devicetree/bindings/arm/fw-cfg.txt | 36 ++++++++++++++++++++++++
>>>  1 file changed, 36 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/arm/fw-cfg.txt b/Documentation/devicetree/bindings/arm/fw-cfg.txt
>>> index 953fb64..c880eec 100644
>>> --- a/Documentation/devicetree/bindings/arm/fw-cfg.txt
>>> +++ b/Documentation/devicetree/bindings/arm/fw-cfg.txt
>>> @@ -49,6 +49,41 @@ The guest kernel is not expected to use these registers (although it is
>>
>> Please update the "=== Revision (Key 0x0001, FW_CFG_ID) ===" section
>> to say that currently the revision is 2.
>
> Sorry I haven't started reading the series yet, but this caught my eye
> -- can we agree that this field should be a bitmap instead, and not a
> counter-like value? I don't insist of course, because for the current
> use case both approaches will work. But, for "future proofing", I think
> it is useful to express features independently of each other. (See eg.
> virtio feature flags.)

Good idea.

Stefan
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Thread

[PATCH] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-08-06 13:10 +0200
  Re: [PATCH] QEMU fw_cfg DMA interface documentation Stefan Hajnoczi <stefanha@gmail.com> - 2015-08-06 14:20 +0200
    Re: [PATCH] QEMU fw_cfg DMA interface documentation Laszlo Ersek <lersek@redhat.com> - 2015-08-06 14:30 +0200
      Re: [PATCH] QEMU fw_cfg DMA interface documentation Stefan Hajnoczi <stefanha@gmail.com> - 2015-08-06 14:30 +0200
  Re: [PATCH] QEMU fw_cfg DMA interface documentation Andrew Jones <drjones@redhat.com> - 2015-08-06 16:50 +0200
    Re: [PATCH] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-08-06 16:50 +0200
      Re: [PATCH] QEMU fw_cfg DMA interface documentation Laszlo Ersek <lersek@redhat.com> - 2015-08-06 17:20 +0200
        Re: [PATCH] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-08-06 17:40 +0200
      Re: [PATCH] QEMU fw_cfg DMA interface documentation Andrew Jones <drjones@redhat.com> - 2015-08-06 17:20 +0200
  Re: [PATCH] QEMU fw_cfg DMA interface documentation Laszlo Ersek <lersek@redhat.com> - 2015-08-07 00:40 +0200

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