From: Ian Campbell <ian.campbell@citrix.com>
To: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
"julieng julien.grall"@citrix.com, ian.jackson@eu.citrix.com,
Wei Liu <wei.liu2@citrix.com>
Cc: Andrew Cooper <Andrew.Cooper3@citrix.com>, xen-devel@lists.xen.org
Subject: [PATCH RFC v1 00/14] xen: arm: support for save restore and dead migration
Date: Wed, 9 Dec 2015 14:31:47 +0000 [thread overview]
Message-ID: <1449671507.16124.264.camel@citrix.com> (raw)
For arm32 + gicv2 systems the following supports apparently successful
save/restore as well dead migrate a domain.
There are several caveats/blockers, hence RFC.
* GIC v2 support only, no GIC v3 at all
* ARM32 only. Doesn't even build for ARM64 (vfp state handling needs
adjustment)
* No live migration, only "dead" (no logdirty support yet)
* Have not fully audited the set of state which needs to be saved (i.e. I
might have missed some registers or something)
On the flip side, thanks to migration v2 the toolstack side of this
practically trivial.
This is (of course) using the current Xen hvm blob handling strata, which I
believe there are plans afoot to rework along the lines of the libxc/libxl
migration v2 protocol.
For now I have no problem waiting and reworking in that vein as things
progress, clearly the blockers/caveats (logdirty support in particular) are
going to take some time to sort out.
This is all based (very distantly) on some original patches from Evgeny
Fedotov and Junghyun Yoo (both of Samsung) however very little of that code
remains here.
As well as the Xen series there will be a single Linux patch too, I'll only
CC ARM folks on that one.
Ian.
next reply other threads:[~2015-12-09 14:31 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-09 14:31 Ian Campbell [this message]
2015-12-09 14:32 ` [PATCH RFC XEN v1 01/14] xen: arm: Add gic_hw_desc Ian Campbell
2015-12-15 16:15 ` Stefano Stabellini
2015-12-15 16:21 ` Ian Campbell
2015-12-15 16:35 ` Andrew Cooper
2015-12-15 16:56 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 02/14] xen: arm: Provide a mechanism to read (and decode) an LR from a saved VCPU Ian Campbell
2015-12-15 16:22 ` Stefano Stabellini
2015-12-09 14:32 ` [PATCH RFC XEN v1 03/14] xen: arm: switch arch_do_domctl to a common exit path Ian Campbell
2015-12-15 16:34 ` Stefano Stabellini
2015-12-15 16:57 ` Ian Campbell
2015-12-15 17:07 ` Andrew Cooper
2015-12-15 17:11 ` Jan Beulich
2015-12-09 14:32 ` [PATCH RFC XEN v1 04/14] xen: arm: Implement XEN_DOMCTL_getpageframeinfo3 Ian Campbell
2015-12-15 16:44 ` Stefano Stabellini
2015-12-09 14:32 ` [PATCH RFC XEN v1 05/14] xen: arm: Implement basic XEN_DOMCTL_{set, get}hvmcontext support Ian Campbell
2015-12-15 18:00 ` Stefano Stabellini
2015-12-16 10:18 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 06/14] xen: arm: Add some basic platform info to save header Ian Campbell
2015-12-15 18:37 ` Stefano Stabellini
2015-12-16 10:20 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 07/14] xen: arm: Save and restore basic per-VCPU state Ian Campbell
2015-12-16 14:55 ` Stefano Stabellini
2015-12-16 15:04 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 08/14] xen: arm: Save and restore arch timer state Ian Campbell
2015-12-16 15:53 ` Stefano Stabellini
2015-12-16 16:02 ` Ian Campbell
2015-12-16 16:17 ` Julien Grall
2015-12-16 16:37 ` Ian Campbell
2015-12-16 18:05 ` Stefano Stabellini
2015-12-17 9:33 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 09/14] xen: arm: Save and restore GIC state Ian Campbell
2015-12-16 18:30 ` Stefano Stabellini
2015-12-17 9:54 ` Ian Campbell
2015-12-22 16:44 ` Stefano Stabellini
2015-12-09 14:32 ` [PATCH RFC XEN v1 10/14] tools: Switch a few CONFIG_MIGRATE features to CONFIG_X86 Ian Campbell
2015-12-09 15:16 ` Andrew Cooper
2015-12-09 14:32 ` [PATCH RFC XEN v1 11/14] tools: migrate: refactor selection of save/restore ops to be arch specific Ian Campbell
2015-12-09 15:26 ` Andrew Cooper
2015-12-09 15:33 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 12/14] tools: libxc: implement modify_returncode for ARM Ian Campbell
2015-12-16 16:22 ` Stefano Stabellini
2015-12-16 16:36 ` Ian Campbell
2015-12-09 14:32 ` [PATCH RFC XEN v1 13/14] tools: libxc: wire up migration " Ian Campbell
2015-12-09 15:48 ` Andrew Cooper
2015-12-09 14:32 ` [PATCH RFC XEN v1 14/14] tools/libxl: BODGE ARM save/restore and (dead) migration Ian Campbell
2015-12-09 14:33 ` [PATCH RFC LINUX v1] xen: arm: enable migration on ARM Ian Campbell
2016-01-06 17:47 ` Stefano Stabellini
2016-01-06 17:57 ` Stefano Stabellini
2016-01-07 9:47 ` Ian Campbell
2016-01-07 9:43 ` Ian Campbell
2016-01-06 17:55 ` Stefano Stabellini
2016-01-07 9:47 ` Ian Campbell
2016-01-07 11:32 ` Stefano Stabellini
2015-12-09 15:51 ` [PATCH RFC v1 00/14] xen: arm: support for save restore and dead migration Andrew Cooper
2015-12-09 16:09 ` Ian Campbell
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