From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Alexander Graf <agraf@suse.de>,
"qemu-devel@nongnu.org List" <qemu-devel@nongnu.org>,
Blue Swirl <blauwirbel@gmail.com>, Mackerras <paulus@samba.org>,
anton@samba.org, Paul@gnu.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] Re: [PATCH 15/15] Implement the bus structure for PAPR virtual IO
Date: Sun, 13 Feb 2011 12:21:16 -0600 [thread overview]
Message-ID: <1297621276.14982.661.camel@pasglop> (raw)
In-Reply-To: <4D580C5F.2060506@codemonkey.ws>
On Sun, 2011-02-13 at 10:52 -0600, Anthony Liguori wrote:
>
> A virtual bus is just an interface. If all virtual devices that
> interact via hcalls would all reside on the same virtual bus, then
> having hypercalls registered through that interface makes sense
> because
> you can associate hypercalls with particular devices. This means
> that
> you can automatically deregister on device removal and things like
> that.
I see. Well, VIO related h-calls are only part of the picture here, I
think we can live with having explicit de-registration if needed ;-)
Besides the h-call is still implemented even if no device -instance- is
currently plugged into the partition anyways. It just returns a (well
defined per-hcall) error code if the instance handle passed to it is
bogus.
> But I don't think this will work out well. I think treating the
> hypercalls as a simple dispatch table just like ioport would make
> sense.
Yup.
Cheers,
Ben.
next prev parent reply other threads:[~2011-02-13 18:21 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-12 14:54 [Qemu-devel] RFC: Implement emulation of pSeries logical partitions David Gibson
2011-02-12 14:54 ` [Qemu-devel] [PATCH 01/15] Add TAGS and *~ to .gitignore David Gibson
2011-02-12 14:54 ` [Qemu-devel] [PATCH 02/15] Clean up PowerPC SLB handling code David Gibson
2011-02-12 15:17 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 03/15] Allow qemu_devtree_setprop() to take arbitrary values David Gibson
2011-02-12 15:18 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 04/15] Add a hook to allow hypercalls to be emulated on PowerPC David Gibson
2011-02-12 15:19 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 05/15] Implement PowerPC slbmfee and slbmfev instructions David Gibson
2011-02-12 15:23 ` [Qemu-devel] " Alexander Graf
2011-02-13 12:46 ` David Gibson
2011-02-12 14:54 ` [Qemu-devel] [PATCH 06/15] Implement missing parts of the logic for the POWER PURR David Gibson
2011-02-12 15:25 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 07/15] Correct ppc popcntb logic, implement popcntw and popcntd David Gibson
2011-02-12 15:27 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 08/15] Clean up slb_lookup() function David Gibson
2011-02-12 15:30 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 09/15] Parse SDR1 on mtspr instead of at translate time David Gibson
2011-02-12 15:37 ` [Qemu-devel] " Alexander Graf
2011-02-13 9:02 ` David Gibson
2011-02-13 12:33 ` Alexander Graf
2011-02-13 12:52 ` David Gibson
2011-02-12 14:54 ` [Qemu-devel] [PATCH 10/15] Use "hash" more consistently in ppc mmu code David Gibson
2011-02-12 15:47 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 11/15] Better factor the ppc hash translation path David Gibson
2011-02-12 15:52 ` [Qemu-devel] " Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 12/15] Support 1T segments on ppc David Gibson
2011-02-12 15:57 ` [Qemu-devel] " Alexander Graf
2011-02-13 9:34 ` David Gibson
2011-02-13 12:37 ` Alexander Graf
2011-02-13 13:38 ` David Gibson
2011-02-12 14:54 ` [Qemu-devel] [PATCH 13/15] Add POWER7 support for ppc David Gibson
2011-02-12 16:09 ` [Qemu-devel] " Alexander Graf
2011-02-13 9:39 ` David Gibson
2011-02-13 12:37 ` Alexander Graf
2011-02-12 14:54 ` [Qemu-devel] [PATCH 14/15] Start implementing pSeries logical partition machine David Gibson
2011-02-12 16:23 ` [Qemu-devel] " Alexander Graf
2011-02-12 16:40 ` Blue Swirl
2011-02-12 20:54 ` Benjamin Herrenschmidt
2011-02-12 14:54 ` [Qemu-devel] [PATCH 15/15] Implement the bus structure for PAPR virtual IO David Gibson
2011-02-12 16:47 ` [Qemu-devel] " Alexander Graf
2011-02-12 16:59 ` Blue Swirl
2011-02-12 21:00 ` Benjamin Herrenschmidt
2011-02-12 22:52 ` Blue Swirl
2011-02-12 23:15 ` Benjamin Herrenschmidt
2011-02-13 8:08 ` Blue Swirl
2011-02-13 11:12 ` David Gibson
2011-02-13 12:15 ` Blue Swirl
2011-02-13 16:12 ` Benjamin Herrenschmidt
2011-02-13 15:08 ` Anthony Liguori
2011-02-13 15:56 ` Alexander Graf
2011-02-13 16:46 ` Anthony Liguori
2011-02-13 18:29 ` Blue Swirl
2011-02-13 19:32 ` Anthony Liguori
2011-02-13 23:33 ` David Gibson
2011-02-13 23:30 ` David Gibson
2011-02-13 12:31 ` Alexander Graf
2011-02-13 12:59 ` Blue Swirl
2011-02-13 16:07 ` Benjamin Herrenschmidt
2011-02-13 16:48 ` Anthony Liguori
2011-02-13 18:19 ` Benjamin Herrenschmidt
2011-02-13 11:14 ` David Gibson
2011-02-13 12:40 ` Alexander Graf
2011-02-13 12:44 ` David Gibson
2011-02-13 13:09 ` Alexander Graf
2011-02-13 15:14 ` Anthony Liguori
2011-02-13 16:17 ` Benjamin Herrenschmidt
2011-02-13 16:52 ` Anthony Liguori
2011-02-13 18:21 ` Benjamin Herrenschmidt [this message]
2011-02-13 11:09 ` David Gibson
2011-02-13 12:38 ` Alexander Graf
2011-02-14 4:16 ` [Qemu-devel] RFC: Implement emulation of pSeries logical partitions FUJITA Tomonori
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=1297621276.14982.661.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=Paul@gnu.org \
--cc=agraf@suse.de \
--cc=anthony@codemonkey.ws \
--cc=anton@samba.org \
--cc=blauwirbel@gmail.com \
--cc=david@gibson.dropbear.id.au \
--cc=paulus@samba.org \
--cc=qemu-devel@nongnu.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).