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From: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
To: Zihan Yang <whois.zihan.yang@gmail.com>, qemu-devel@nongnu.org
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
	Igor Mammedov <imammedo@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Richard Henderson <rth@twiddle.net>,
	Eduardo Habkost <ehabkost@redhat.com>,
	lersek@redhat.com
Subject: Re: [Qemu-devel] [RFC 3/3] acpi-build: allocate mcfg for multiple host bridges
Date: Tue, 22 May 2018 21:43:45 +0300	[thread overview]
Message-ID: <25bc34e0-3ecf-1465-cff7-6ba1a162dec1@gmail.com> (raw)
In-Reply-To: <CAKwiv-gmfOhM_4BZbjH4VcTh4qmRQ0GuAskJ74T+M3KMHg6_mQ@mail.gmail.com>



On 05/22/2018 09:03 AM, Zihan Yang wrote:
> > An interesting point is if we want to limit the MMFCG size for PXBs, 
> as we may not be
> > interested to use all the buses in a specific domain.
>
> OK, perhaps providing an option for the user to specify the desired 
> bus numbers?
>

Right, specifying the number of buses that can be used (e.g: max_busses) 
will decrease a lot
the amount of address space we have to reserve.

> > For each bus we require some address space that remains unused.
>
> Does this mean we should reserve some slots in a bus, or reduce
> the number of buses used in each domain?
>

Limit the number of buses per PCI domain (excluding PCI domain 0, of course)

> > [Adding Laszlo for his insights]
> > Looking forward to see the SeaBIOS patches :)
>
> I appreciate your reviews, I'll write the rest part as soon as possible.
>

Thanks,
Marcel

> Thanks
>

  reply	other threads:[~2018-05-22 18:43 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-20  7:28 [Qemu-devel] [RFC 0/3] pci_expander_brdige: Put pxb host bridge into separate pci domain Zihan Yang
2018-05-20  7:28 ` [Qemu-devel] [RFC 1/3] pci_expander_bridge: reserve enough mcfg space for pxb host Zihan Yang
2018-05-21 11:03   ` Marcel Apfelbaum
2018-05-22  5:59     ` Zihan Yang
2018-05-22 18:47       ` Marcel Apfelbaum
2018-05-20  7:28 ` [Qemu-devel] [RFC 2/3] pci: Link pci_host_bridges with QTAILQ Zihan Yang
2018-05-21 11:05   ` Marcel Apfelbaum
2018-05-22  5:59     ` Zihan Yang
2018-05-22 18:39       ` Marcel Apfelbaum
2018-05-20  7:28 ` [Qemu-devel] [RFC 3/3] acpi-build: allocate mcfg for multiple host bridges Zihan Yang
2018-05-21 11:53   ` Marcel Apfelbaum
2018-05-22  6:03     ` Zihan Yang
2018-05-22 18:43       ` Marcel Apfelbaum [this message]
2018-05-22  9:52     ` Laszlo Ersek
2018-05-22 19:01       ` Marcel Apfelbaum
2018-05-22 19:51         ` Laszlo Ersek
2018-05-22 20:58           ` Michael S. Tsirkin
2018-05-22 21:36             ` Alex Williamson
2018-05-22 21:44               ` Michael S. Tsirkin
2018-05-22 21:47                 ` Alex Williamson
2018-05-22 22:00                   ` Laszlo Ersek
2018-05-22 23:38                   ` Michael S. Tsirkin
2018-05-23  4:28                     ` Alex Williamson
2018-05-23 14:25                       ` Michael S. Tsirkin
2018-05-23 14:57                         ` Alex Williamson
2018-05-23 15:01                           ` Michael S. Tsirkin
2018-05-23 16:50                         ` Marcel Apfelbaum
2018-05-22 21:17           ` Alex Williamson
2018-05-22 21:22             ` Michael S. Tsirkin
2018-05-22 21:58               ` Laszlo Ersek
2018-05-22 21:50             ` Laszlo Ersek
2018-05-23 17:00             ` Marcel Apfelbaum
2018-05-22 22:42           ` Laszlo Ersek
2018-05-22 23:40             ` Michael S. Tsirkin
2018-05-23  7:32               ` Laszlo Ersek
2018-05-23 11:11                 ` Zihan Yang
2018-05-23 12:28                   ` Laszlo Ersek
2018-05-23 17:23                     ` Marcel Apfelbaum
2018-05-24  9:57                     ` Zihan Yang
2018-05-23 17:33                   ` Marcel Apfelbaum
2018-05-24 10:00                     ` Zihan Yang
2018-05-23 17:11                 ` Marcel Apfelbaum
2018-05-23 17:25                   ` Laszlo Ersek
2018-05-28 11:02                 ` Laszlo Ersek
2018-05-21 15:23 ` [Qemu-devel] [RFC 0/3] pci_expander_brdige: Put pxb host bridge into separate pci domain Marcel Apfelbaum
2018-05-22  6:04   ` Zihan Yang

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