From: Steven Newbury <steve@snewbury.org.uk>
To: Yinghai Lu <yinghai@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
David Miller <davem@davemloft.net>,
Tony Luck <tony.luck@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
Date: Wed, 06 Jun 2012 10:44:12 +0100 [thread overview]
Message-ID: <1338975852.5858.2.camel@Nokia-N900> (raw)
In-Reply-To: <CAE9FiQWbET=awz9o=6JBwonv_obe5KzRPNXjowNtFWrN3_4T_w@mail.gmail.com>
On Tue, 5 Jun 2012, 06:04:57 BST, Yinghai Lu <yinghai@kernel.org> wrote:
> > Linux has a long history of allocating bottom-up. Windows has a long
> > history of allocating top-down. You're proposing a third alternative,
> > allocating bottom-up starting at 4GB for 64-bit BARs. If we change
> > this area, I would prefer something that follows Windows because I
> > think it will be closer to what's been tested by Windows. Do you
> > think your alternative is better?
>
> hope we can figure out how windows is making it work.
>
> Steve, Can you check if Windows is working with your test case ?
>
> If it works, we may try do the same thing from Linux, so you will not
> need to append "pci=nocrs pci=alloc_high"...
>
Unfortunately I don't have a 64 bit version of Windows to test with. Vista(32 bit) fails to even boot when docked, hot-plugging fails to allocate resources, but at least doesn't crash.
>From what I've read about the (64 bit) Windows allocation stragegy it's closer to Yinghai's method than the Linux default, preferring 64 bit resources (>4G) when possible. I'll try to find the specification document again.
next prev parent reply other threads:[~2012-06-06 9:44 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-23 6:34 [PATCH 00/11] PCI: resource allocation related Yinghai Lu
2012-05-23 6:34 ` [PATCH 01/11] PCI: Should add children device res to fail list Yinghai Lu
2012-05-23 6:34 ` [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first Yinghai Lu
2012-05-23 15:57 ` Linus Torvalds
2012-05-23 17:30 ` Yinghai Lu
2012-05-23 18:40 ` Yinghai Lu
2012-05-25 4:36 ` Bjorn Helgaas
2012-05-25 17:53 ` Yinghai Lu
2012-05-25 18:39 ` Yinghai Lu
2012-05-25 19:37 ` Bjorn Helgaas
2012-05-25 20:18 ` H. Peter Anvin
2012-05-25 20:19 ` Yinghai Lu
2012-05-25 21:55 ` Bjorn Helgaas
2012-05-25 21:58 ` H. Peter Anvin
2012-05-25 22:14 ` Bjorn Helgaas
2012-05-25 23:10 ` Yinghai Lu
2012-05-26 0:12 ` Bjorn Helgaas
2012-05-26 15:01 ` Bjorn Helgaas
2012-05-29 17:56 ` Yinghai Lu
2012-05-29 17:55 ` Yinghai Lu
2012-05-29 17:57 ` H. Peter Anvin
2012-05-29 18:17 ` Yinghai Lu
2012-05-29 19:03 ` H. Peter Anvin
2012-05-29 20:46 ` Yinghai Lu
2012-05-29 20:50 ` H. Peter Anvin
2012-06-01 23:30 ` Yinghai Lu
2012-06-04 1:05 ` Bjorn Helgaas
2012-06-05 2:37 ` Yinghai Lu
2012-06-05 4:50 ` Bjorn Helgaas
2012-06-05 5:04 ` Yinghai Lu
2012-06-06 9:44 ` Steven Newbury [this message]
2012-06-06 16:18 ` Bjorn Helgaas
[not found] ` <CAGLnvc_ejMWiiubVMo7DLz5ZVn1iMbf67FB4H7crRCCTRRqt2A@mail.gmail.com>
2012-07-04 3:00 ` joeyli
2012-05-29 20:53 ` David Miller
2012-05-29 19:23 ` Bjorn Helgaas
2012-05-29 20:40 ` Yinghai Lu
2012-05-29 23:24 ` Bjorn Helgaas
2012-05-29 23:27 ` Bjorn Helgaas
2012-05-29 23:33 ` Yinghai Lu
2012-05-29 23:47 ` Bjorn Helgaas
2012-05-30 7:40 ` Steven Newbury
2012-05-30 16:27 ` Bjorn Helgaas
2012-05-30 16:30 ` H. Peter Anvin
2012-05-30 16:33 ` Linus Torvalds
2012-05-23 6:34 ` [PATCH 03/11] intel-gtt: Read 64bit for gmar_bus_addr Yinghai Lu
2012-05-23 7:21 ` Dave Airlie
2012-05-23 7:44 ` Daniel Vetter
2012-05-23 6:34 ` [PATCH 04/11] PCI: Make sure assign same align with large size resource at first Yinghai Lu
2012-05-23 6:34 ` [PATCH 05/11] resources: Split out __allocate_resource() Yinghai Lu
2012-05-23 6:34 ` [PATCH 06/11] resource: make find_resource could return just fit resource Yinghai Lu
2012-05-23 6:34 ` [PATCH 07/11] PCI: Don't allocate small resource in big empty space Yinghai Lu
2012-05-23 6:34 ` [PATCH 08/11] resource: only return range with needed align Yinghai Lu
2012-05-23 6:34 ` [PATCH 09/11] PCI: Add is_pci_iov_resource_idx() Yinghai Lu
2012-05-23 6:34 ` [PATCH 10/11] PCI: Sort unassigned resources with correct alignment Yinghai Lu
2012-05-23 6:34 ` [PATCH 11/11] PCI: Treat ROM resource as optional during assigning Yinghai Lu
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