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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox