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

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Message-ID: <CAE9FiQUWWO75WP3gYRwYbyO_ZiWwyjKnzMxOGhfjY4H98w2Hbw@mail.gmail.com>
Date:	Fri, 25 May 2012 16:10:20 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Newbury <steve@...wbury.org.uk>,
	"H. Peter Anvin" <hpa@...or.com>,
	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 Fri, May 25, 2012 at 2:55 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> I think we should fix this with a separate patch that removes
> PCIBIOS_MAX_MEM_32 altogether, replacing this use with an explicit
> 0xffffffff (or some other "max 32-bit value" symbol).  I don't think
> there's anything arch-specific about this.
>
> So I'd like to see two patches here:
>  1) Avoid allocating 64-bit regions for 32-bit BARs
>  2) Try to allocate regions above 4GB for 64-bit BARs

Sure. please check updated two patches.

Thanks

Yinghai

Download attachment "32_bit_bar_allocation.patch" of type "application/octet-stream" (2556 bytes)

Download attachment "allocate_high_at_first_v4.patch" of type "application/octet-stream" (2140 bytes)