linux-kernel - Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first

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Message-ID: <4FBFE90A.5090407@zytor.com>
Date:	Fri, 25 May 2012 13:18:18 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	Yinghai Lu <yinghai@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Newbury <steve@...wbury.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first

On 05/25/2012 12:37 PM, Bjorn Helgaas wrote:
> 
> That's goofy.  You're proposing to make only x86_64 and x86-PAE try to put
> 64-bit BARs above 4GB.  Why should this be specific to x86?  I acknowledge
> that there's risk in doing this, but if it's a good idea for x86_64, it
> should also be a good idea for other 64-bit architectures.
> 

And so it is (assuming, of course, that we can address that memory.)

	-hpa

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