All of lore.kernel.org
 help / color / mirror / Atom feed
From: Peter Maydell <peter.maydell@linaro.org>
To: Michael Roth <mdroth@linux.vnet.ibm.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
	Alexey Kardashevskiy <aik@ozlabs.ru>,
	Alexander Graf <agraf@suse.de>,
	QEMU Developers <qemu-devel@nongnu.org>,
	Mike Day <ncmike@ncultra.org>,
	"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
	tyreld@linux.vnet.ibm.com, nfont@linux.vnet.ibm.com
Subject: Re: [Qemu-devel] [PATCH 08/12] pci: allow 0 address for PCI IO regions
Date: Thu, 28 Aug 2014 22:33:02 +0100	[thread overview]
Message-ID: <CAFEAcA-WRpoNHPxD1se=zOUPiiGr0xPnDcvGCej51qw+4k=FSQ@mail.gmail.com> (raw)
In-Reply-To: <20140828212157.21832.67572@loki>

On 28 August 2014 22:21, Michael Roth <mdroth@linux.vnet.ibm.com> wrote:
> But I guess there's still a separate issue, where there's a high liklihood that
> a 0 address would conflict with some hard-wired IO address? Wouldn't this be a
> guest bug though?

Even if it's a guest bug, we should act like the hardware does
if the guest does this. If that differs between PCI controllers
then we need a flag so the host controller model can select
the required behaviour. (The versatile PB PCI controller we
model does have "address 0 is valid", and we'd need to have
this working if we implemented DMA accesses properly.)

-- PMM

  reply	other threads:[~2014-08-28 21:33 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-19  0:21 [Qemu-devel] [PATCH v3 00/12] spapr: add support for pci hotplug Michael Roth
2014-08-19  0:21 ` [Qemu-devel] [PATCH 01/12] spapr: populate DRC entries for root dt node Michael Roth
2014-08-26  7:55   ` Alexey Kardashevskiy
2014-08-26  8:24     ` Alexey Kardashevskiy
2014-08-26 15:25       ` Michael Roth
2014-08-26 15:41         ` Michael Roth
2014-08-29 18:27         ` Tyrel Datwyler
2014-08-29 23:15           ` Alexander Graf
2014-08-26 14:56     ` Michael Roth
2014-09-05  0:31     ` [Qemu-devel] [Qemu-ppc] " Tyrel Datwyler
2014-08-26 11:11   ` [Qemu-devel] " Alexander Graf
2014-08-26 16:47     ` Michael Roth
2014-08-26 17:16       ` Alexander Graf
2014-09-03  5:55   ` Bharata B Rao
2014-09-05 22:00   ` Tyrel Datwyler
2014-08-19  0:21 ` [Qemu-devel] [PATCH 02/12] spapr_pci: populate DRC dt entries for PHBs Michael Roth
2014-08-26  8:32   ` Alexey Kardashevskiy
2014-08-26 17:16     ` Michael Roth
2014-08-26  9:09   ` Alexey Kardashevskiy
2014-08-26 17:52     ` Michael Roth
2014-08-26 11:29   ` Alexander Graf
2014-08-26 18:30     ` Michael Roth
2014-08-19  0:21 ` [Qemu-devel] [PATCH 03/12] spapr: add helper to retrieve a PHB/device DrcEntry Michael Roth
2014-08-19  0:21 ` [Qemu-devel] [PATCH 04/12] spapr_pci: add set-indicator RTAS interface Michael Roth
2014-08-26 11:36   ` Alexander Graf
2014-09-05  2:55     ` Nathan Fontenot
2014-09-30 22:08     ` Michael Roth
2014-10-01 14:30       ` Alexander Graf
2014-11-26  4:51         ` Bharata B Rao
2014-11-26  4:54         ` Bharata B Rao
2014-11-26  6:27           ` Michael Roth
2014-12-01  4:57             ` Bharata B Rao
2014-12-23 15:12               ` Michael Roth
2015-01-01  6:35                 ` Bharata B Rao
2014-08-19  0:21 ` [Qemu-devel] [PATCH 05/12] spapr_pci: add get/set-power-level RTAS interfaces Michael Roth
2014-08-19  0:21 ` [Qemu-devel] [PATCH 06/12] spapr_pci: add get-sensor-state RTAS interface Michael Roth
2014-09-05  0:34   ` Tyrel Datwyler
2014-08-19  0:21 ` [Qemu-devel] [PATCH 07/12] spapr_pci: add ibm, configure-connector " Michael Roth
2014-08-26  9:12   ` Alexey Kardashevskiy
2014-09-05  3:03     ` Nathan Fontenot
2014-08-26 11:39   ` Alexander Graf
2014-08-19  0:21 ` [Qemu-devel] [PATCH 08/12] pci: allow 0 address for PCI IO regions Michael Roth
2014-08-26  9:14   ` Alexey Kardashevskiy
2014-08-26 11:55     ` Peter Maydell
2014-08-26 18:34     ` Michael Roth
2014-08-26 11:41   ` Alexander Graf
2014-08-27 13:47   ` Michael S. Tsirkin
2014-08-28 21:21     ` Michael Roth
2014-08-28 21:33       ` Peter Maydell [this message]
2014-08-28 21:46         ` Michael S. Tsirkin
2014-08-19  0:21 ` [Qemu-devel] [PATCH 09/12] spapr_pci: enable basic hotplug operations Michael Roth
2014-08-26  9:40   ` Alexey Kardashevskiy
2014-08-26 12:30   ` Alexander Graf
2014-09-03 10:33   ` Bharata B Rao
2014-09-03 23:03     ` Michael Roth
2014-09-04 15:08       ` Bharata B Rao
2014-09-04 16:12         ` Michael Roth
2014-09-04 16:34           ` Michael Roth
2014-09-05  3:10             ` Nathan Fontenot
2014-09-05 17:17               ` [Qemu-devel] [Qemu-ppc] " Tyrel Datwyler
2014-08-19  0:21 ` [Qemu-devel] [PATCH 10/12] spapr_events: re-use EPOW event infrastructure for hotplug events Michael Roth
2014-08-26  9:28   ` Alexey Kardashevskiy
2014-08-19  0:21 ` [Qemu-devel] [PATCH 11/12] spapr_events: event-scan RTAS interface Michael Roth
2014-08-26  9:30   ` Alexey Kardashevskiy
2014-08-29 18:43     ` Tyrel Datwyler
2014-08-19  0:21 ` [Qemu-devel] [PATCH 12/12] spapr_pci: emit hotplug add/remove events during hotplug Michael Roth
2014-08-26  9:35   ` Alexey Kardashevskiy
2014-08-26 12:36   ` Alexander Graf
2014-08-26  9:24 ` [Qemu-devel] [PATCH v3 00/12] spapr: add support for pci hotplug Alexey Kardashevskiy
2015-01-09 14:57 [Qemu-devel] [PATCH 08/12] pci: allow 0 address for PCI IO regions Claudio Fontana
2015-01-09 15:29 ` Michael Roth

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAFEAcA-WRpoNHPxD1se=zOUPiiGr0xPnDcvGCej51qw+4k=FSQ@mail.gmail.com' \
    --to=peter.maydell@linaro.org \
    --cc=agraf@suse.de \
    --cc=aik@ozlabs.ru \
    --cc=mdroth@linux.vnet.ibm.com \
    --cc=mst@redhat.com \
    --cc=ncmike@ncultra.org \
    --cc=nfont@linux.vnet.ibm.com \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-ppc@nongnu.org \
    --cc=tyreld@linux.vnet.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.