From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: "Guilherme G. Piccoli" <gpiccoli@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Cc: xinhui.pan@linux.vnet.ibm.com, paulus@samba.org,
gpiccoli@linux.vnet.ibm.com
Subject: Re: [v4, 1/3] powerpc/xmon: Fix an unexpected xmon on/off state change
Date: Fri, 31 Mar 2017 23:33:54 +1100 (AEDT) [thread overview]
Message-ID: <3vvgsZ3rypz9s77@ozlabs.org> (raw)
In-Reply-To: <20170322192751.30531-2-gpiccoli@linux.vnet.ibm.com>
On Wed, 2017-03-22 at 19:27:49 UTC, "Guilherme G. Piccoli" wrote:
> From: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
>
> Once xmon is triggered by sysrq-x, it is enabled always afterwards even
> if it is disabled during boot. This will cause a system reset interrupt
> fail to dump. So keep xmon in its original state after exit.
>
> We have several ways to set xmon on or off.
> 1) by a build config CONFIG_XMON_DEFAULT.
> 2) by a boot cmdline with xmon or xmon=early or xmon=on to enable xmon
> and xmon=off to disable xmon. This value will override that in step 1.
> 3) by a debugfs interface, as proposed in this patchset.
> And this value can override those in step 1 and 2.
>
> Signed-off-by: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
> Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/3b5bf42b81d56085fd58692b5117f6
cheers
next prev parent reply other threads:[~2017-03-31 12:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-22 19:27 [PATCH v4 0/3] powerpc/xmon: improvements and fixes Guilherme G. Piccoli
2017-03-22 19:27 ` [PATCH v4 1/3] powerpc/xmon: Fix an unexpected xmon on/off state change Guilherme G. Piccoli
2017-03-31 12:33 ` Michael Ellerman [this message]
2017-03-22 19:27 ` [PATCH v4 2/3] powerpc/xmon: drop the nobt option from xmon plus minor fixes Guilherme G. Piccoli
2017-03-31 0:36 ` Paul Mackerras
2017-03-31 13:06 ` Guilherme G. Piccoli
2017-04-01 10:31 ` Michael Ellerman
2017-03-22 19:27 ` [PATCH v4 3/3] powerpc/xmon: add debugfs entry for xmon Guilherme G. Piccoli
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