From: Thomas Gleixner <tglx@linutronix.de>
To: speck@linutronix.de
Subject: Re: Bug --> Fix
Date: Tue, 7 Aug 2018 12:22:06 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.1808071221560.1901@nanos.tec.linutronix.de> (raw)
In-Reply-To: <alpine.DEB.2.21.1808070914070.1788@nanos.tec.linutronix.de>
On Tue, 7 Aug 2018, speck for Thomas Gleixner wrote:
> On Mon, 6 Aug 2018, speck for Josh Poimboeuf wrote:
>
> > We found a bug with the 'nosmt' boot cmdline option. 'nosmt' is now
> > equivalent to 'nosmt=force'. /sys/devices/system/cpu/smt/control shows
> > 'notsupported', and can't be re-enabled. I haven't had a chance to
> > debug it, but I suspect it's because of my patch:
> >
> > 73d5e2b47264 ("cpu/hotplug: detect SMT disabled by BIOS")
> >
> > which doesn't make a distinction between "SMT disabled by BIOS" and "SMT
> > disabled by 'nosmt'".
>
> Bah. The below (untested) patch should cure that.
Tested now and it fixes the issue.
next prev parent reply other threads:[~2018-08-07 10:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-07 2:54 [MODERATED] Bug Josh Poimboeuf
2018-08-07 7:20 ` Bug --> Fix Thomas Gleixner
2018-08-07 10:22 ` Thomas Gleixner [this message]
2018-08-07 17:09 ` [MODERATED] " Josh Poimboeuf
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