From: PGNet Dev <pgnet.dev@gmail.com>
To: xen-devel@lists.xen.org
Subject: boot message "xen:manage: Unable to read sysrq code in control/sysrq" ?
Date: Sun, 28 May 2017 12:55:26 -0700 [thread overview]
Message-ID: <5b2be70e-9cc5-eafc-060a-a05bcaebf03d@gmail.com> (raw)
Working with Xen 4.9.0 host on kernel 4.11.3
dmesg | egrep -i "linux version|xen version"
[ 0.000000] Linux version 4.11.3-2.g7262353-default (geeko@buildhost) (gcc version 7.1.1 20170517 [gcc-7-branch revision 248152] (SUSE Linux) ) #1 SMP PREEMPT Thu May 25 17:55:04 UTC 2017 (7262353)
[ 0.000000] Xen version: 4.9.0_07-503 (preserve-AD)
I currently see in host boot
dmesg | grep sysrq
[ 20.905146] xen:manage: Unable to read sysrq code in control/sysrq
That seems to originate at
https://lkml.org/lkml/2016/11/8/134
...
+ if (xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key) < 0) {
pr_err("Unable to read sysrq code in control/sysrq\n");
xenbus_transaction_end(xbt, 1);
return;
...
Is this a config issue -- wrong or missing -- on my end? Or a problem that needs some more diagnostic info here?
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next reply other threads:[~2017-05-28 19:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-28 19:55 PGNet Dev [this message]
2017-05-29 7:39 ` boot message "xen:manage: Unable to read sysrq code in control/sysrq" ? Juergen Gross
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