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: 73+ 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
2011-02-14 4:16 ` 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 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.