linux-kernel - Re: [PATCH] powerpc, kexec: Fix "Processor X is stuck" issue during kexec from ST mode

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Date:	Thu, 12 Jun 2014 16:39:39 +1000
From:	Joel Stanley <joel@....id.au>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	ego@...ux.vnet.ibm.com, matt@...abs.org,
	Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	suzuki@...ibm.com, ebiederm@...ssion.com,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCH] powerpc, kexec: Fix "Processor X is stuck" issue during
 kexec from ST mode

Hi Srivatsa,

On Sat, Jun 7, 2014 at 7:16 AM, Srivatsa S. Bhat
<srivatsa.bhat@...ux.vnet.ibm.com> wrote:
> And with the following hunk added (which I had forgotten earlier), it worked just
> fine on powernv :-)

How are the patches coming along?

I just hung a machine here while attempting to kexec. It appears to
have onlined all of the secondary threads, and then hung here:

kexec: Waking offline cpu 1.
kvm: enabling virtualization on CPU1
kexec: Waking offline cpu 2.
kvm: enabling virtualization on CPU2
kexec: Waking offline cpu 3.
kvm: enabling virtualization on CPU3
kexec: Waking offline cpu 5.
kvm: enabling virtualization on CPU5
[...]
kvm: enabling virtualization on CPU63
kexec: waiting for cpu 1 (physical 1) to enter OPAL
kexec: waiting for cpu 2 (physical 2) to enter OPAL
kexec: waiting for cpu 3 (physical 3) to enter OPAL

I'm running benh's next branch as of thismorning, and SMT was off.

Could you please post your latest patches a series? I will test them here.

Cheers,

Joel
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