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From: Andi Kleen <ak@suse.de>
To: "Yinghai Lu" <yhlu.kernel@gmail.com>
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: Sat, 8 Mar 2008 00:20:50 +0100 [thread overview]
Message-ID: <200803080020.50474.ak@suse.de> (raw)
In-Reply-To: <86802c440803071502o50a06199i6afeb5996f207c6d@mail.gmail.com>
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?
-Andi
next prev parent reply other threads:[~2008-03-07 23:21 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 [this message]
2008-03-08 1:45 ` Yinghai Lu
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