From: Gerd Hoffmann <kraxel@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Anthony Liguori" <aliguori@us.ibm.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
qemu-devel@nongnu.org, "Isaku Yamahata" <yamahata@valinux.co.jp>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Laszlo Ersek" <lersek@redhat.com>,
"Andreas Färber" <afaerber@suse.de>,
"David Gibson" <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH] pc: limit 64 bit hole to 2G by default
Date: Wed, 24 Jul 2013 09:01:51 +0200 [thread overview]
Message-ID: <51EF7BDF.2070503@redhat.com> (raw)
In-Reply-To: <20130724060104.GA18072@redhat.com>
On 07/24/13 08:01, Michael S. Tsirkin wrote:
> It turns out that some 32 bit windows guests crash
> if 64 bit PCI hole size is >2G.
Ah, *that* is the reason for winxp crashing with a 64bit hole.
Current seabios uses a slightly different approach: the 64bit hole is
present only in case it is actually used to map bars there, and seabios
tries to fit everything into the 32bit hole first.
> Limit it to 2G for piix and q35 by default,
> add properties to let management override the hole size.
>
> Examples:
> -global i440FX-pcihost.pci_hole64_size=137438953472
Do we really want specify this in bytes? Using megabytes or gigabytes
instead looks more sane to me.
cheers,
Gerd
next prev parent reply other threads:[~2013-07-24 7:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 6:01 [Qemu-devel] [PATCH] pc: limit 64 bit hole to 2G by default Michael S. Tsirkin
2013-07-24 6:50 ` Andreas Färber
2013-07-24 7:01 ` Gerd Hoffmann [this message]
2013-07-24 9:51 ` Michael S. Tsirkin
2013-07-24 10:08 ` Igor Mammedov
2013-07-24 12:59 ` Paolo Bonzini
2013-07-24 13:14 ` Michael S. Tsirkin
2013-07-24 13:18 ` Paolo Bonzini
2013-07-24 14:07 ` Michael S. Tsirkin
2013-07-24 13:00 ` Gerd Hoffmann
2013-07-25 13:40 ` Igor Mammedov
2013-07-25 15:03 ` Michael S. Tsirkin
2013-07-25 15:16 ` Igor Mammedov
2013-07-25 15:23 ` Michael S. Tsirkin
2013-07-25 15:30 ` Igor Mammedov
2013-07-25 15:35 ` Michael S. Tsirkin
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