From: "Michael S. Tsirkin" <mst@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH rebased for-1.8] i386: pc: align gpa<->hpa on 1GB boundary (v6)
Date: Wed, 11 Dec 2013 17:51:42 +0200 [thread overview]
Message-ID: <20131211155142.GD25814@redhat.com> (raw)
In-Reply-To: <52A88794.3030709@redhat.com>
On Wed, Dec 11, 2013 at 04:41:08PM +0100, Paolo Bonzini wrote:
> Il 11/12/2013 16:39, Michael S. Tsirkin ha scritto:
> > > 2GB low memory for q35 is a bit wasteful,
> > > but we have some time to fix that before release.
> >
> > How would you fix that?
>
> Just use 1GB, coupled with reducing the default MMCONFIG size to 128
> buses.
> That's already ~40 PCIe devices
This is not really enough, people requested more than 40 devices.
We will likely need multiroot down the road because some people want
more than 256 devices ...
> if you count upstream/downstream
> ports in addition to the actual device, and you can also use PCIe-to-PCI
> bridges if you need more room.
>
> Paolo
We don't want people to use PCI down the road.
Everything should be PCIE so we can use things like native hotplug.
--
MST
next prev parent reply other threads:[~2013-12-11 15:48 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-25 17:43 [Qemu-devel] [PATCH rebased for-1.8] i386: pc: align gpa<->hpa on 1GB boundary (v6) Paolo Bonzini
2013-11-25 20:58 ` Laszlo Ersek
2013-11-25 21:05 ` Michael S. Tsirkin
2013-11-25 23:09 ` Marcelo Tosatti
2013-11-26 9:04 ` Paolo Bonzini
2013-11-28 10:26 ` Michael S. Tsirkin
2013-12-10 13:18 ` Paolo Bonzini
2013-12-10 14:53 ` Gerd Hoffmann
2013-12-10 14:58 ` Paolo Bonzini
2013-12-10 15:36 ` Gerd Hoffmann
2013-12-10 15:47 ` Laszlo Ersek
2013-12-10 15:53 ` Gerd Hoffmann
2013-12-10 17:46 ` Laszlo Ersek
2013-12-10 17:48 ` Paolo Bonzini
2013-12-10 21:00 ` Michael S. Tsirkin
2013-12-10 22:13 ` Laszlo Ersek
2013-12-10 22:15 ` Laszlo Ersek
2013-12-10 23:17 ` Michael S. Tsirkin
2013-12-11 8:00 ` Gerd Hoffmann
2013-12-10 15:05 ` Marcelo Tosatti
2013-12-10 17:21 ` Marcelo Tosatti
2013-12-10 21:02 ` Michael S. Tsirkin
2013-12-11 13:41 ` Marcelo Tosatti
2013-12-11 14:20 ` Michael S. Tsirkin
2013-12-11 14:45 ` Paolo Bonzini
2013-12-11 15:39 ` Michael S. Tsirkin
2013-12-11 15:41 ` Paolo Bonzini
2013-12-11 15:51 ` Michael S. Tsirkin [this message]
2013-12-11 15:45 ` Igor Mammedov
2013-12-11 15:56 ` Paolo Bonzini
2013-12-11 17:26 ` Marcelo Tosatti
2013-12-10 16:52 ` Michael S. Tsirkin
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