From: Gerd Hoffmann <kraxel@redhat.com>
To: alexey.korolev@endace.com
Cc: sfd@endace.com, seabios@seabios.org, mst@redhat.com,
qemu-devel@nongnu.org, avi@redhat.com
Subject: Re: [Qemu-devel] [SeaBIOS] [PATCH 4/6] Mapping of BARs and Bridge regions
Date: Thu, 01 Mar 2012 10:22:06 +0100 [thread overview]
Message-ID: <4F4F3FBE.7030202@redhat.com> (raw)
In-Reply-To: <1330585052.29508.114.camel@nzhmlwks0057.ad.endace.com>
On 03/01/12 07:57, Alexey Korolev wrote:
> In pci_bios_map_regions() we try to reserve memory for
> all entries of root bus regions.
> If pci_bios_init_root_regions() fails - e.g no enough space, we create two new pci_regions:
> r64pref, r64mem and migrate all entries which are 64bit capable to them. Migration process
> is very simple: delete the entry from one list add to another.
It isn't that simple. There are a bunch of constrains. First the
bridge must be 64bit capable. All bridges up to the root bus in case of
nested bridges. Second all other prefmem bars of devices behind the
bridge must be 64bit capable too. Again, in case of nested bridges this
applies to all devices behind the toplevel bridge.
cheers,
Gerd
next prev parent reply other threads:[~2012-03-01 9:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-01 5:50 [Qemu-devel] [Seabios] [PATCH 0/6] 64bit PCI BARs allocations (take 2) Alexey Korolev
2012-03-01 6:05 ` [Qemu-devel] [Seabios] [PATCH 1/6] Adding new structures Alexey Korolev
2012-03-01 6:15 ` [Qemu-devel] [PATCH 2/6] New service functions and ported old functions to 64bit Alexey Korolev
2012-03-01 6:40 ` [Qemu-devel] [PATCH 3/6] Fill PCI regions with etnries Alexey Korolev
2012-03-01 6:57 ` [Qemu-devel] [PATCH 4/6] Mapping of BARs and Bridge regions Alexey Korolev
2012-03-01 9:22 ` Gerd Hoffmann [this message]
2012-03-01 22:01 ` [Qemu-devel] [SeaBIOS] " Alexey Korolev
2012-03-02 7:21 ` Gerd Hoffmann
2012-03-05 5:31 ` Alexey Korolev
2012-03-01 7:02 ` [Qemu-devel] [PATCH 5/6] Delete old code Alexey Korolev
2012-03-01 7:11 ` [Qemu-devel] [PATCH 6/6] 64bit PCI range in _CRS table Alexey Korolev
2012-03-01 9:05 ` [Qemu-devel] [SeaBIOS] [Seabios] [PATCH 0/6] 64bit PCI BARs allocations (take 2) Gerd Hoffmann
2012-03-01 21:48 ` Alexey Korolev
2012-03-02 7:08 ` Gerd Hoffmann
2012-03-05 5:34 ` Alexey Korolev
2012-03-05 10:12 ` Gerd Hoffmann
2012-03-06 4:28 ` Alexey Korolev
2012-03-04 19:40 ` [Qemu-devel] " Kevin O'Connor
2012-03-05 6:03 ` Alexey Korolev
2012-03-05 13:16 ` Kevin O'Connor
2012-03-05 9:53 ` [Qemu-devel] [SeaBIOS] " Gerd Hoffmann
2012-03-05 13:49 ` Kevin O'Connor
2012-03-06 4:44 ` Alexey Korolev
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