From: Arnd Bergmann <arnd@arndb.de>
To: Gregory Haskins <ghaskins@novell.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
avi@redhat.com
Subject: Re: [RFC PATCH 1/3] add generic hypercall support
Date: Wed, 6 May 2009 18:52:15 +0200 [thread overview]
Message-ID: <200905061852.15931.arnd@arndb.de> (raw)
In-Reply-To: <4A01A9C5.5010601@novell.com>
On Wednesday 06 May 2009, Gregory Haskins wrote:
> Ok, so we would
> need to come up with these pio_calls for x86, and no other arch can use
> the infrastructure (but wait, PPC can use PCI too, so how does that
> work? It must be either MMIO emulation or its not supported? That puts
> us back to square one).
PowerPC already has an abstraction for PIO and MMIO because certain
broken hardware chips don't do what they should, see
arch/powerpc/platforms/cell/io-workarounds.c for the only current user.
If you need to, you could do the same on x86 (or generalize the code),
but please don't add another level of indirection on top of this.
Arnd <><
next prev parent reply other threads:[~2009-05-06 16:52 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-05 13:24 [RFC PATCH 0/3] generic hypercall support Gregory Haskins
2009-05-05 13:24 ` [RFC PATCH 1/3] add " Gregory Haskins
2009-05-05 17:03 ` Hollis Blanchard
2009-05-06 13:52 ` Anthony Liguori
2009-05-06 15:16 ` Gregory Haskins
2009-05-06 16:52 ` Arnd Bergmann [this message]
2009-05-05 13:24 ` [RFC PATCH 2/3] x86: " Gregory Haskins
2009-05-05 13:24 ` [RFC PATCH 3/3] kvm: add pv_cpu_ops.hypercall support to the guest Gregory Haskins
2009-05-05 13:36 ` [RFC PATCH 0/3] generic hypercall support Avi Kivity
2009-05-05 13:40 ` Gregory Haskins
2009-05-05 14:00 ` Avi Kivity
2009-05-05 14:14 ` Gregory Haskins
2009-05-05 14:21 ` Gregory Haskins
2009-05-05 15:02 ` Avi Kivity
2009-05-05 23:17 ` Chris Wright
2009-05-06 3:51 ` Gregory Haskins
2009-05-06 7:22 ` Chris Wright
2009-05-06 13:17 ` Gregory Haskins
2009-05-06 16:07 ` Chris Wright
2009-05-07 17:03 ` Gregory Haskins
2009-05-07 18:05 ` Avi Kivity
2009-05-07 18:08 ` Gregory Haskins
2009-05-07 18:12 ` Avi Kivity
2009-05-07 18:16 ` Gregory Haskins
2009-05-07 18:24 ` Avi Kivity
2009-05-07 18:37 ` Gregory Haskins
2009-05-07 19:00 ` Avi Kivity
2009-05-07 19:05 ` Gregory Haskins
2009-05-07 19:43 ` Avi Kivity
2009-05-07 20:07 ` Gregory Haskins
2009-05-07 20:15 ` Avi Kivity
2009-05-07 20:26 ` Gregory Haskins
2009-05-08 8:35 ` Avi Kivity
2009-05-08 11:29 ` Gregory Haskins
2009-05-07 19:07 ` Chris Wright
2009-05-07 19:12 ` Gregory Haskins
2009-05-07 19:21 ` Chris Wright
2009-05-07 19:26 ` Avi Kivity
2009-05-07 19:44 ` Avi Kivity
2009-05-07 19:29 ` Gregory Haskins
2009-05-07 20:25 ` Chris Wright
2009-05-07 20:34 ` Gregory Haskins
2009-05-07 20:54 ` Arnd Bergmann
2009-05-07 21:13 ` Gregory Haskins
2009-05-07 21:57 ` Chris Wright
2009-05-07 22:11 ` Arnd Bergmann
2009-05-08 22:33 ` Benjamin Herrenschmidt
2009-05-11 13:01 ` Arnd Bergmann
2009-05-11 13:04 ` Gregory Haskins
2009-05-07 20:00 ` Arnd Bergmann
2009-05-07 20:31 ` Gregory Haskins
2009-05-07 20:42 ` Arnd Bergmann
2009-05-07 20:47 ` Arnd Bergmann
2009-05-07 20:50 ` Chris Wright
2009-05-07 23:35 ` Marcelo Tosatti
2009-05-07 23:43 ` Marcelo Tosatti
2009-05-08 3:17 ` Gregory Haskins
2009-05-08 7:55 ` Avi Kivity
[not found] ` <20090508103253.GC3011@amt.cnet>
2009-05-08 11:37 ` Avi Kivity
2009-05-08 3:13 ` Gregory Haskins
2009-05-08 7:59 ` Avi Kivity
2009-05-08 11:09 ` Gregory Haskins
[not found] ` <20090508104228.GD3011@amt.cnet>
2009-05-08 12:43 ` Gregory Haskins
2009-05-08 15:33 ` Marcelo Tosatti
2009-05-08 19:02 ` Avi Kivity
2009-05-08 16:48 ` Paul E. McKenney
2009-05-08 19:55 ` Gregory Haskins
2009-05-08 14:15 ` Gregory Haskins
2009-05-08 14:53 ` Anthony Liguori
2009-05-08 18:50 ` Avi Kivity
2009-05-08 19:02 ` Anthony Liguori
2009-05-08 19:06 ` Avi Kivity
2009-05-11 16:37 ` Jeremy Fitzhardinge
2009-05-07 12:29 ` Avi Kivity
2009-05-08 14:59 ` Anthony Liguori
2009-05-09 12:01 ` Gregory Haskins
2009-05-10 18:38 ` Anthony Liguori
2009-05-11 13:14 ` Gregory Haskins
2009-05-11 16:35 ` Hollis Blanchard
2009-05-11 17:06 ` Avi Kivity
2009-05-11 17:29 ` Gregory Haskins
2009-05-11 17:53 ` Avi Kivity
2009-05-11 17:51 ` Anthony Liguori
2009-05-11 18:02 ` Avi Kivity
2009-05-11 18:18 ` Anthony Liguori
2009-05-11 17:31 ` Anthony Liguori
2009-05-13 10:53 ` Gregory Haskins
2009-05-13 14:45 ` Gregory Haskins
2009-05-11 16:44 ` Hollis Blanchard
2009-05-11 17:54 ` Anthony Liguori
2009-05-11 19:24 ` PowerPC page faults Hollis Blanchard
2009-05-11 22:17 ` Anthony Liguori
2009-05-12 5:46 ` Liu Yu-B13201
2009-05-12 14:50 ` Hollis Blanchard
2009-05-06 13:56 ` [RFC PATCH 0/3] generic hypercall support Anthony Liguori
2009-05-06 16:03 ` Gregory Haskins
2009-05-08 8:17 ` Avi Kivity
2009-05-08 15:20 ` Gregory Haskins
2009-05-08 17:00 ` Avi Kivity
2009-05-08 18:55 ` Gregory Haskins
2009-05-08 19:05 ` Anthony Liguori
2009-05-08 19:12 ` Avi Kivity
2009-05-08 19:59 ` Gregory Haskins
2009-05-10 9:59 ` Avi Kivity
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