From: Joerg Roedel <joro@8bytes.org>
To: suravee.suthikulpanit@amd.com
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
kim.naru@amd.com, jay.cornwall@amd.com
Subject: Re: [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages
Date: Tue, 6 May 2014 20:14:39 +0200 [thread overview]
Message-ID: <20140506181438.GD12376@8bytes.org> (raw)
In-Reply-To: <1398724066-3730-1-git-send-email-suravee.suthikulpanit@amd.com>
On Mon, Apr 28, 2014 at 05:27:46PM -0500, Suthikulpanit, Suravee wrote:
> From: Jay Cornwall <jay.cornwall@amd.com>
>
> get_user_pages requires caller to hold a read lock on mmap_sem.
Right, but can't we just switch to get_user_pages_fast instead?
Joerg
next prev parent reply other threads:[~2014-05-06 18:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-28 22:27 [PATCH] iommu/amd: Take mmap_sem when calling get_user_pages suravee.suthikulpanit-5C7GfCeVMHo
2014-04-28 22:27 ` suravee.suthikulpanit
2014-05-06 18:14 ` Joerg Roedel [this message]
2014-05-06 19:11 ` Suravee Suthikulanit
2014-05-06 19:11 ` Suravee Suthikulanit
2014-05-06 19:27 ` Suravee Suthikulanit
2014-05-06 19:27 ` Suravee Suthikulanit
[not found] ` <1398724066-3730-1-git-send-email-suravee.suthikulpanit-5C7GfCeVMHo@public.gmane.org>
2014-05-12 19:04 ` Joerg Roedel
2014-05-12 19:04 ` Joerg Roedel
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=20140506181438.GD12376@8bytes.org \
--to=joro@8bytes.org \
--cc=iommu@lists.linux-foundation.org \
--cc=jay.cornwall@amd.com \
--cc=kim.naru@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=suravee.suthikulpanit@amd.com \
/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.