From: "H. Peter Anvin" <hpa@zytor.com>
To: Akinobu Mita <akinobu.mita@gmail.com>,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Cc: 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: Wed, 20 Nov 2013 15:47:38 -0800 [thread overview]
Message-ID: <528D4A1A.2050100@zytor.com> (raw)
In-Reply-To: <1384903939-3371-1-git-send-email-akinobu.mita@gmail.com>
On 11/19/2013 03:32 PM, Akinobu Mita wrote:
> The DMA Contiguous Memory Allocator support on x86 is disabled when
> swiotlb config option is enabled. So DMA CMA is always disabled on
> x86_64 because swiotlb is always enabled. This attempts to support
> for DMA CMA with enabling swiotlb config option.
What is the use case?
-hpa
next prev parent reply other threads:[~2013-11-20 23:48 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 [this message]
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
2013-11-23 13:59 ` Akinobu Mita
2013-11-22 9:15 ` Marek Szyprowski
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