From: Arnd Bergmann <arnd@arndb.de>
To: linaro-acpi@lists.linaro.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Peter Maydell <peter.maydell@linaro.org>,
"tech@virtualopensystems.com" <tech@virtualopensystems.com>,
Hanjun Guo <hanjun.guo@linaro.org>,
QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [Linaro-acpi] [RFC PATCH 0/7] hw/arm/virt: Dynamic ACPI v5.1 table generation
Date: Thu, 06 Nov 2014 14:33:16 +0100 [thread overview]
Message-ID: <4768655.ip33B0y0L1@wuerfel> (raw)
In-Reply-To: <20141106133001.GC23706@leverpostej>
On Thursday 06 November 2014 13:30:01 Mark Rutland wrote:
>
> There is no way of doing this with DT. There has been work into DT
> fragments/overlays where portions can be added to the tree dynamically,
> but that's controlled by the OS rather than the hypervisor, and there's
> no standard for communicating what has been hotplugged to trigger
> changes to the tree, so it's not quite the same. It really only works
> for tightly coupled hw/kernel/userspace combinations (i.e. embedded).
>
> Depending on how you implement the hot-add/remove you might be able to
> get away with an initial static configuration translated from DT. If you
> need to describe what might be hotplugged from the start, then I suspect
> you cannot get away with translating a DT in general.
I believe IBM POWER 5/6/7 servers have an interface to update the DT
from the hypervisor, but it's not a nice interface, so we may want to
avoid duplicating that.
Arnd
next prev parent reply other threads:[~2014-11-06 13:33 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 17:43 [Qemu-devel] [RFC PATCH 0/7] hw/arm/virt: Dynamic ACPI v5.1 table generation Alexander Spyridakis
2014-10-30 17:43 ` [Qemu-devel] [RFC PATCH 1/7] hw/i386: Move ACPI header definitions in an arch-independent location Alexander Spyridakis
2014-10-30 17:44 ` [Qemu-devel] [RFC PATCH 2/7] hw/arm/virt-acpi: Basic skeleton for dynamic generation of ACPI tables Alexander Spyridakis
2014-10-30 17:46 ` Peter Maydell
2014-10-30 17:52 ` [Qemu-devel] [RFC PATCH 0/7] hw/arm/virt: Dynamic ACPI v5.1 table generation Peter Maydell
2014-10-30 18:02 ` [Qemu-devel] [Linaro-acpi] " Mark Rutland
2014-11-05 9:58 ` Claudio Fontana
2014-11-06 12:44 ` Peter Maydell
2014-11-06 12:57 ` Igor Mammedov
2014-11-06 13:33 ` Alexander Spyridakis
2014-11-06 13:52 ` Peter Maydell
2014-11-11 15:29 ` Mark Rutland
2014-11-11 16:31 ` Christoffer Dall
2014-11-11 16:48 ` Mark Rutland
2014-11-11 21:33 ` Christoffer Dall
2014-11-12 10:38 ` Mark Rutland
2014-11-12 10:44 ` Christoffer Dall
2014-11-12 10:55 ` Julien Grall
2014-11-12 11:07 ` Mark Rutland
2014-11-12 11:38 ` Graeme Gregory
2014-11-12 11:52 ` Paolo Bonzini
2014-11-12 12:04 ` Mark Rutland
2014-11-12 12:12 ` Paolo Bonzini
2014-11-12 13:27 ` Peter Maydell
2014-11-12 13:32 ` Paolo Bonzini
2014-11-12 15:01 ` Claudio Fontana
2014-11-12 15:32 ` Arnd Bergmann
2014-11-12 15:39 ` Peter Maydell
2014-11-12 15:52 ` Paolo Bonzini
2014-11-12 15:57 ` Arnd Bergmann
2014-11-12 16:04 ` Paolo Bonzini
2014-11-12 16:13 ` Arnd Bergmann
2014-11-12 16:25 ` Paolo Bonzini
2014-11-12 17:33 ` Peter Maydell
2014-11-13 8:32 ` Gerd Hoffmann
2014-11-13 8:14 ` Gerd Hoffmann
2014-11-13 8:10 ` Gerd Hoffmann
2014-11-13 18:16 ` Al Stone
2014-11-13 19:22 ` Paolo Bonzini
2014-11-14 7:54 ` Gerd Hoffmann
2014-11-12 9:08 ` Claudio Fontana
2014-11-12 10:56 ` Mark Rutland
2014-11-12 11:15 ` Arnd Bergmann
2014-11-12 11:34 ` Christoffer Dall
2014-11-12 11:48 ` Paolo Bonzini
2014-11-12 12:18 ` Mark Rutland
2014-11-12 12:27 ` Paolo Bonzini
2014-11-12 12:40 ` Christoffer Dall
2014-11-12 13:08 ` Arnd Bergmann
2014-11-12 13:27 ` Paolo Bonzini
2014-11-12 13:41 ` Mark Rutland
2014-11-12 13:59 ` Paolo Bonzini
2014-11-12 14:10 ` Mark Rutland
2014-11-12 14:46 ` Paolo Bonzini
2014-11-12 13:03 ` Arnd Bergmann
2014-11-12 13:35 ` Christoffer Dall
2014-11-12 11:55 ` Mark Rutland
2014-11-12 18:10 ` Peter Maydell
2014-11-13 9:57 ` Claudio Fontana
2014-11-17 17:52 ` Peter Maydell
2014-11-06 6:53 ` Hanjun Guo
2014-11-06 13:30 ` Mark Rutland
2014-11-06 13:33 ` Arnd Bergmann [this message]
2014-11-06 15:57 ` Paolo Bonzini
2014-11-06 16:18 ` Igor Mammedov
2014-11-06 16:27 ` Paolo Bonzini
2014-11-07 8:31 ` Hanjun Guo
2015-03-09 12:12 ` Leif Lindholm
2015-03-09 12:28 ` Peter Maydell
2015-03-09 12:47 ` Shannon Zhao
2015-03-09 14:50 ` Leif Lindholm
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