From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xen.org
Cc: Juergen Gross <jgross@suse.com>, Wei Liu <wei.liu2@citrix.com>,
Dario Faggioli <dario.faggioli@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [PATCH v4 0/3] add hypercall option to temporarily pin a vcpu
Date: Thu, 10 Mar 2016 06:27:11 +0100 [thread overview]
Message-ID: <1457587634-22819-1-git-send-email-jgross@suse.com> (raw)
Some hardware (e.g. Dell studio 1555 laptops) require SMIs to be
called on physical cpu 0 only. Linux drivers like dcdbas or i8k try
to achieve this by pinning the running thread to cpu 0, but in Dom0
this is not enough: the vcpu must be pinned to physical cpu 0 via
Xen, too.
This patch series enhances xen tools to cope with new reactions of
the hypervisor due to the new feature.
Changes in V4:
- removed patches 1-3 (hypervisor patches) as already accepted
- patch 1 (was 4): minor code modifications as suggested by Dario Faggioli
- patch 3 (was 6): change "force" variable to bool as suggested by
Dario Faggioli
- patch 3 (was 6): add #define to libxl indicating availability of
libxl_set_vcpuaffinity_force() as requested by Wei Liu
- patch 3 (was 6): add force option to xl man page as requested by
Dario Faggioli
Changes in V3:
- removed old patch 1 as already accepted
- new patch 1 to correct error in cpupool_unassign_cpu_helper()
- patch 2: adjust coding style as requested by Jan Beulich
- patch 2: rename pin_temp to pin_override as requested by Jan Beulich and
suggested by David Vrabel
- patch 2: change return type of do_pin_temp() to int as requested by
Jan Beulich
- patch 2: swap error checks in do_sched_op() as requested by Jan Beulich
- patch 2: adjust comment in xen/include/public/sched.h as requested by
Jan Beulich
- new patch 3 to add possibility in hypervisor to undo pin override via tools
- patch 4 (was 3): adjust coding style as requested by Wei Liu
- new patch 5 to print message how to recover from xl cpupool-cpu-remove
errors
- new patch 6 to undo pin override via xl vcpu-pin (force option)
Changes in V2:
- add patch 1 to silence messages on suspend/resume
- add patch 3 to handle EBUSY case when removing cpu from cpupool
- limit operation to hardware domain as suggested by Jan Beulich
- some style issues corrected as requested by Jan Beulich
- use fixed width types in interface as requested by Jan Beulich
- add compat layer checking as requested by Jan Beulich
Juergen Gross (3):
libxc: do some retries in xc_cpupool_removecpu() for EBUSY case
libxl: print message how to recover from xl cpupool-cpu-remove errors
libxl: add force option for xl vcpu-pin
docs/man/xl.pod.1 | 7 ++++++-
tools/libxc/xc_cpupool.c | 20 +++++++++++++++++++-
tools/libxl/libxl.c | 31 +++++++++++++++++++++++++------
tools/libxl/libxl.h | 10 ++++++++++
tools/libxl/xl_cmdimpl.c | 32 +++++++++++++++++++++++++++-----
tools/libxl/xl_cmdtable.c | 3 ++-
6 files changed, 89 insertions(+), 14 deletions(-)
Cc: Dario Faggioli <dario.faggioli@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
--
2.6.2
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next reply other threads:[~2016-03-10 5:27 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 5:27 Juergen Gross [this message]
2016-03-10 5:27 ` [PATCH v4 1/3] libxc: do some retries in xc_cpupool_removecpu() for EBUSY case Juergen Gross
2016-03-10 10:26 ` Dario Faggioli
2016-03-10 17:16 ` Wei Liu
2016-04-12 13:02 ` Olaf Hering
2016-04-12 13:45 ` Juergen Gross
2016-04-12 13:50 ` Olaf Hering
2016-04-12 13:57 ` Wei Liu
2016-04-14 16:04 ` Ian Jackson
2016-03-10 5:27 ` [PATCH v4 2/3] libxl: print message how to recover from xl cpupool-cpu-remove errors Juergen Gross
2016-04-14 16:06 ` Ian Jackson
2016-04-14 17:10 ` Dario Faggioli
2016-04-14 17:22 ` Ian Jackson
2016-04-14 17:27 ` Dario Faggioli
2016-03-10 5:27 ` [PATCH v4 3/3] libxl: add force option for xl vcpu-pin Juergen Gross
2016-03-10 10:25 ` Dario Faggioli
2016-03-10 17:17 ` Wei Liu
2016-04-14 16:10 ` Ian Jackson
2016-04-14 17:18 ` Dario Faggioli
2016-03-22 7:36 ` [PATCH v4 0/3] add hypercall option to temporarily pin a vcpu Juergen Gross
2016-03-24 14:03 ` Wei Liu
2016-03-24 17:58 ` Juergen Gross
2016-03-24 19:41 ` Wei Liu
2016-03-30 10:28 ` Juergen Gross
2016-03-30 14:23 ` Konrad Rzeszutek Wilk
2016-04-14 16:11 ` Ian Jackson
2016-04-14 19:15 ` Konrad Rzeszutek Wilk
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