From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Alexander Graf <agraf@suse.de>
Cc: Jens Freimann <jfrei@de.ibm.com>,
Cornelia Huck <cornelia.huck@de.ibm.com>,
Jens Freimann <jfrei@linux.vnet.ibm.com>,
Heinz Graalfs <graalfs@linux.vnet.ibm.com>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH 4/8] s390: stop target cpu on sigp initial reset
Date: Tue, 12 Jun 2012 12:15:18 +0200 [thread overview]
Message-ID: <4FD716B6.4030309@de.ibm.com> (raw)
In-Reply-To: <4FD70F0A.8050609@suse.de>
On 12/06/12 11:42, Alexander Graf wrote:
> Jens Freimann wrote:
>> From: Christian Borntraeger <borntraeger@de.ibm.com>
>>
>> We must not run the target cpu after an initial reset. This makes
>> system_reset more reliable for smp guests.
>>
>
> Why?
After an initial reset, the cpu is in a state (PSW=0) that causes program check
loops if the cpu thread starts before the cpu is properly set up, iow we might
burn cpu and have the cpu in a state that it is not supposed to be.
Christian
next prev parent reply other threads:[~2012-06-12 10:15 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-06 12:05 [Qemu-devel] [PATCH 0/8] s390: SCLP console and misc Jens Freimann
2012-06-06 12:05 ` [Qemu-devel] [PATCH 1/8] s390: add new define for KVM_CAP_S390_COW Jens Freimann
2012-06-06 12:05 ` [Qemu-devel] [PATCH 2/8] s390: autodetect map private Jens Freimann
2012-06-12 9:32 ` Alexander Graf
2012-06-12 11:20 ` Christian Borntraeger
2012-06-12 11:57 ` Alexander Graf
2012-06-12 12:02 ` Christian Borntraeger
2012-06-12 12:12 ` Alexander Graf
2012-06-13 10:30 ` Jan Kiszka
2012-06-13 10:54 ` Alexander Graf
2012-06-13 10:58 ` Jan Kiszka
2012-06-13 11:27 ` Christian Borntraeger
2012-06-13 11:41 ` Jan Kiszka
2012-06-13 12:33 ` Alexander Graf
2012-06-13 12:35 ` Jan Kiszka
2012-06-15 14:01 ` [Qemu-devel] Next version of memory allocation fixup Christian Borntraeger
2012-06-15 14:01 ` [Qemu-devel] [PatchV2] s390: autodetect map private Christian Borntraeger
2012-06-15 15:10 ` [Qemu-devel] One more fix Christian Borntraeger
2012-06-15 15:10 ` [Qemu-devel] [PATCH v3] s390: autodetect map private Christian Borntraeger
2012-06-15 17:01 ` Jan Kiszka
2012-06-18 13:44 ` Alexander Graf
2012-06-06 12:05 ` [Qemu-devel] [PATCH 3/8] s390: make kvm_stat work on s390 Jens Freimann
2012-06-06 12:05 ` [Qemu-devel] [PATCH 4/8] s390: stop target cpu on sigp initial reset Jens Freimann
2012-06-12 9:42 ` Alexander Graf
2012-06-12 10:15 ` Christian Borntraeger [this message]
2012-06-06 12:05 ` [Qemu-devel] [PATCH 5/8] s390: Cleanup sclp functions Jens Freimann
2012-06-12 9:58 ` Alexander Graf
2012-06-12 10:07 ` Christian Borntraeger
2012-06-12 10:09 ` Alexander Graf
2012-06-12 10:10 ` Alexander Graf
2012-06-12 12:24 ` Christian Borntraeger
2012-06-12 12:32 ` Alexander Graf
2012-06-12 22:41 ` Anthony Liguori
2012-06-12 22:38 ` Anthony Liguori
2012-06-06 12:05 ` [Qemu-devel] [PATCH 6/8] s390: sclp event facility and signal quiesce support via system_powerdown Jens Freimann
2012-06-12 11:38 ` Alexander Graf
2012-06-13 7:00 ` Heinz Graalfs
2012-06-13 13:12 ` Andreas Färber
2012-06-06 12:05 ` [Qemu-devel] [PATCH 7/8] s390: Add SCLP vt220 console support Jens Freimann
2012-06-12 11:52 ` Alexander Graf
2012-06-13 7:27 ` Heinz Graalfs
2012-06-13 7:53 ` Alexander Graf
2012-06-06 12:05 ` [Qemu-devel] [PATCH 8/8] s390: Fix the storage increment size calculation Jens Freimann
2012-06-12 11:53 ` Alexander Graf
2012-06-12 14:57 ` Jeng-fang Wang
2012-06-18 13:46 ` Alexander Graf
2012-06-18 19:30 ` Christian Borntraeger
2012-06-18 12:35 ` [Qemu-devel] [PATCH 0/8] s390: SCLP console and misc Christian Borntraeger
2012-06-18 13:33 ` Alexander Graf
2012-06-18 13:41 ` Christian Borntraeger
2012-06-18 13:51 ` Alexander Graf
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