From: Matthew Garrett <mjg@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Don Dutile <ddutile@redhat.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-efi@vger.kernel.org, mfleming@intel.com,
dwmw2@infradead.org, bhelgaas@google.com
Subject: Re: [PATCH V3 3/4] PCI: Add support for non-BAR ROMs
Date: Wed, 5 Sep 2012 14:44:55 +0100 [thread overview]
Message-ID: <20120905134454.GD16399@srcf.ucam.org> (raw)
In-Reply-To: <20120905143010.557aa3fb@pyramind.ukuu.org.uk>
On Wed, Sep 05, 2012 at 02:30:10PM +0100, Alan Cox wrote:
> On Wed, 5 Sep 2012 14:20:07 +0100
> Matthew Garrett <mjg@redhat.com> wrote:
> > We've no good way of knowing what the firmware's giving us - we copy it
> > to RAM in the EFI init process, so by the time we're here it certainly
> > shouldn't be on the PCI bus.
>
> In which case how do you know that physical address you have been given
> actually has a mapping in kernel virtual space. It seems like it ought to
> be getting an ioremap in that case ?
>
> phys_to_virt is not valid for arbitary addresses.
The pages are allocated as EFI_LOADER_DATA, and that gets mapped as
E820_RAM.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2012-09-05 13:45 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-23 16:36 Use PCI ROMs from EFI boot services Matthew Garrett
2012-08-23 16:36 ` [PATCH V3 1/4] EFI: Stash ROMs if they're not in the PCI BAR Matthew Garrett
2012-08-23 23:44 ` Bjorn Helgaas
2012-08-24 4:09 ` Matthew Garrett
2012-09-04 13:45 ` Matthew Garrett
2012-09-06 13:59 ` Bjorn Helgaas
2012-09-06 17:36 ` [PATCH] x86: Fix build warning on 32-bit Matthew Garrett
2012-09-06 20:02 ` Bjorn Helgaas
2012-08-23 16:36 ` [PATCH V3 2/4] PCI: Add pcibios_add_device Matthew Garrett
2012-08-23 16:36 ` [PATCH V3 3/4] PCI: Add support for non-BAR ROMs Matthew Garrett
2012-09-05 2:18 ` Don Dutile
2012-09-05 2:29 ` Matthew Garrett
2012-09-05 12:46 ` Alan Cox
2012-09-05 13:20 ` Matthew Garrett
2012-09-05 13:30 ` Alan Cox
2012-09-05 13:44 ` Matthew Garrett [this message]
2012-08-23 16:36 ` [PATCH V3 4/4] X86: Use PCI setup data Matthew Garrett
2012-08-24 9:30 ` Use PCI ROMs from EFI boot services David Woodhouse
2012-08-24 12:53 ` Matthew Garrett
[not found] ` <1345739803-21017-1-git-send-email-mjg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-10-25 17:35 ` Bjorn Helgaas
2012-10-25 17:35 ` Bjorn Helgaas
2012-12-03 20:02 ` Seth Forshee
2012-12-05 20:09 ` Bjorn Helgaas
[not found] ` <CAErSpo7S2+Vt+9bkGLx_=AY9aSGCvAnkHfqu01gTj=eKs7btNw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-05 20:22 ` Matthew Garrett
2012-12-05 20:22 ` Matthew Garrett
[not found] ` <20121205202254.GA25398-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2012-12-05 22:21 ` Bjorn Helgaas
2012-12-05 22:21 ` Bjorn Helgaas
2012-12-05 21:06 ` David Woodhouse
2012-12-05 21:06 ` David Woodhouse
2012-12-06 0:15 ` Yinghai Lu
[not found] ` <CAE9FiQVdpmmExrPrLf7HYVuo0cTY9Xjn6bWzObbuSSeQ-e1PbA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-06 0:18 ` Matthew Garrett
2012-12-06 0:18 ` Matthew Garrett
2012-12-06 0:21 ` H. Peter Anvin
[not found] ` <50BFE50C.8030008-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2012-12-06 0:30 ` Yinghai Lu
2012-12-06 0:30 ` Yinghai Lu
2012-12-06 0:36 ` H. Peter Anvin
[not found] ` <50BFE890.5070109-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2012-12-06 0:57 ` Matthew Garrett
2012-12-06 0:57 ` Matthew Garrett
2012-12-06 1:04 ` H. Peter Anvin
2012-12-06 1:13 ` Matthew Garrett
[not found] ` <cd3b2e67-92af-494d-ba2d-4179ead6e06b-2ueSQiBKiTY7tOexoI0I+QC/G2K4zDHf@public.gmane.org>
2012-12-06 1:21 ` H. Peter Anvin
2012-12-06 1:21 ` H. Peter Anvin
[not found] ` <50BFF328.5030406-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2012-12-06 6:19 ` Matthew Garrett
2012-12-06 6:19 ` Matthew Garrett
2012-12-06 1:00 ` Matthew Garrett
2012-12-06 0:22 ` Yinghai Lu
[not found] ` <20121206001819.GA30527-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2012-12-06 0:23 ` Eric W. Biederman
2012-12-06 0:23 ` Eric W. Biederman
2012-12-06 0:36 ` H. Peter Anvin
2012-12-06 0:51 ` Yinghai Lu
[not found] ` <CAE9FiQXwZAAMkWYT8EjsewpuZ-OWqoaFscyzGS_pSuO9C3bf9A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-06 0:52 ` Yinghai Lu
2012-12-06 0:52 ` Yinghai Lu
2012-12-06 18:19 ` Bjorn Helgaas
2012-12-06 18:26 ` H. Peter Anvin
[not found] ` <50C0E339.4030607-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2012-12-06 18:54 ` Matthew Garrett
2012-12-06 18:54 ` Matthew Garrett
2012-12-06 18:57 ` Yinghai Lu
2012-12-06 21:44 ` Bjorn Helgaas
2012-12-06 0:56 ` H. Peter Anvin
2012-12-06 0:56 ` H. Peter Anvin
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