From: Yinghai Lu <yinghai@kernel.org>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: mingo@elte.hu, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -tip] x86: fix iommu=soft boot option
Date: Mon, 07 Dec 2009 16:51:28 -0800 [thread overview]
Message-ID: <4B1DA310.7050408@kernel.org> (raw)
In-Reply-To: <20091208092438Z.fujita.tomonori@lab.ntt.co.jp>
FUJITA Tomonori wrote:
> On Wed, 2 Dec 2009 17:07:24 +0900
> FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
>
>> On Tue, 01 Dec 2009 23:55:28 -0800
>> Yinghai Lu <yinghai@kernel.org> wrote:
>>
>>>>>>> amd 64 systems that
>>>>>>> 1. do not have AGP
>>>>>>> 2. do not have IOMMU
>>>>>>> 3. mem > 4g
>>>>>>> 4. BIOS do not allocate correct gart in NB.
>>>>>>> will leave them to use SWIOTLB forcely.
>>>>>> As I asked earlier, can you tell me what dma ops such system is
>>>>>> supposed to use?
>>>>> gart_dma_ops
>>>> How does gart_dma_ops work on systems without IOMMU?
>>> ?
>> If a system doesn't have IOMMU, what does gart_dma_ops do?
>
> Ping?
gart can do hw translation...
YH
next prev parent reply other threads:[~2009-12-08 0:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-24 23:46 [PATCH -tip] x86: fix iommu=soft boot option FUJITA Tomonori
2009-11-24 23:55 ` Yinghai Lu
2009-11-25 0:05 ` FUJITA Tomonori
2009-11-25 8:18 ` Ingo Molnar
2009-11-25 8:54 ` Yinghai Lu
2009-11-25 9:05 ` FUJITA Tomonori
2009-11-25 9:10 ` Ingo Molnar
2009-11-25 9:45 ` Yinghai Lu
2009-11-25 11:03 ` FUJITA Tomonori
2009-11-25 22:33 ` Yinghai Lu
2009-11-27 7:29 ` FUJITA Tomonori
2009-11-27 7:45 ` Yinghai Lu
2009-11-27 8:06 ` FUJITA Tomonori
2009-12-01 7:42 ` Yinghai Lu
2009-12-02 5:44 ` FUJITA Tomonori
2009-12-02 6:57 ` Yinghai Lu
2009-12-02 7:25 ` FUJITA Tomonori
2009-12-02 7:55 ` Yinghai Lu
2009-12-02 8:07 ` FUJITA Tomonori
2009-12-08 0:24 ` FUJITA Tomonori
2009-12-08 0:51 ` Yinghai Lu [this message]
2009-11-25 10:17 ` Joerg Roedel
2009-11-25 13:30 ` [tip:core/iommu] x86: Fix " tip-bot for FUJITA Tomonori
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4B1DA310.7050408@kernel.org \
--to=yinghai@kernel.org \
--cc=fujita.tomonori@lab.ntt.co.jp \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.