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From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Andi Kleen" <ak@suse.de>
Cc: "Ingo Molnar" <mingo@elte.hu>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"kernel list" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86_64: reserve dma32 early for gart
Date: Fri, 7 Mar 2008 17:45:54 -0800	[thread overview]
Message-ID: <86802c440803071745l33584535jb998b262e59a915a@mail.gmail.com> (raw)
In-Reply-To: <200803080020.50474.ak@suse.de>

On Fri, Mar 7, 2008 at 3:20 PM, Andi Kleen <ak@suse.de> wrote:
> On Saturday 08 March 2008 00:02:50 Yinghai Lu wrote:
>  >
>  >
>
>
>
>  >solution will be:
>  >1. make memmap allocation get memory above 4G...
>  >2. reserve some dma32 range early before we try to set up memmap for all.
>  >and release that before pci_iommu_alloc, so gart or swiotlb could get some
>  >range under 4g limit for sure.
>
>  Funny we had (1) before vmemmap for some time, but it looks like
>  that regressed with vmemmap Anyways I think (1) alone should be enough, is (2)
>  really needed?

even vmemmap is disabled, still need (2).

(1) is not there yet.

YH

      reply	other threads:[~2008-03-08  1:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-07 23:02 Yinghai Lu
2008-03-07 23:20 ` Andi Kleen
2008-03-08  1:45   ` Yinghai Lu [this message]

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