linux-kernel - Re[6]: 3.4-rc smpboot: do_boot_cpu failed(-1) to wakeup CPU#1

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Date:	Thu, 15 Oct 2015 22:03:38 -0400
From:	shrybman <shrybman@...savvy.com>
To:	"Donald Parsons" <dparsons@...ghtdsl.net>,
	"Brown, Len" <len.brown@...el.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re[6]: 3.4-rc smpboot: do_boot_cpu failed(-1) to wakeup CPU#1

> try booting upstream with "cpu_init_udelay=1".
> If it works, then it actually implicates this commit:
> 
> a9bcaa02a5104ace6a9d9e4a9cd9192a9e7744d6
> ("x86/smpboot: Remove SIPI delays from cpu_up()")
> 
> Unfortunately the commit message for that on is erroneous --
> "cpu_init_udelay=10000" is actually a NO-OP,
> because that matches the compiled-in default.
> Indeed, any non-zero value bug 10000 should work.


That does seem to work. Heh, I tried that with 10000 last week.


Thanks,


Shane



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