From: Andi Kleen <andi@firstfloor.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org
Subject: Re: [PATCH] x86: enable DMA CMA with swiotlb
Date: Fri, 22 Nov 2013 13:19:04 -0800 [thread overview]
Message-ID: <87fvqow2wn.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <528F71F8.4070902@zytor.com> (H. Peter Anvin's message of "Fri, 22 Nov 2013 07:02:16 -0800")
"H. Peter Anvin" <hpa@zytor.com> writes:
>
> If you have a real iotlb, why would you need contiguous memory?
iotlb is often slow.
Another use case is allocating 1GB pages at runtime.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2013-11-22 21:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 23:32 [PATCH] x86: enable DMA CMA with swiotlb Akinobu Mita
2013-11-20 14:00 ` Konrad Rzeszutek Wilk
2013-11-20 23:35 ` Akinobu Mita
2013-11-20 23:47 ` H. Peter Anvin
2013-11-21 15:02 ` Akinobu Mita
2013-11-21 18:11 ` H. Peter Anvin
2013-11-22 12:27 ` Akinobu Mita
2013-11-22 15:02 ` H. Peter Anvin
2013-11-22 21:19 ` Andi Kleen [this message]
2013-11-23 13:59 ` Akinobu Mita
2013-11-22 9:15 ` Marek Szyprowski
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=87fvqow2wn.fsf@tassilo.jf.intel.com \
--to=andi@firstfloor.org \
--cc=akinobu.mita@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=hpa@zytor.com \
--cc=konrad.wilk@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/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.