From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Date: Mon, 24 Mar 2014 18:36:54 +0000
Subject: Re: Generic idle causes boot hang on T1000
Message-Id: <20140324.143654.2242726338958297413.davem@davemloft.net>
List-Id: <sparclinux.vger.kernel.org>
References: <alpine.LSU.2.11.1403232347380.23553@nerf08.vanv.qr>
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To: sparclinux@vger.kernel.org

From: Jan Engelhardt <jengelh@inai.de>
Date: Mon, 24 Mar 2014 19:19:44 +0100 (CET)

> 
> On Monday 2014-03-24 17:53, David Miller wrote:
>>diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
>>index 32a280e..d7b4967 100644
>>--- a/arch/sparc/kernel/process_64.c
>>+++ b/arch/sparc/kernel/process_64.c
>>@@ -58,9 +58,12 @@ void arch_cpu_idle(void)
>> {
>> 	if (tlb_type != hypervisor) {
>> 		touch_nmi_watchdog();
>>+		local_irq_enable();
>> 	} else {
>> 		unsigned long pstate;
>> 
>>+		local_irq_enable();
>>+
>>                 /* The sun4v sleeping code requires that we have PSTATE.IE cleared over
>>                  * the cpu sleep hypervisor call.
>>                  */
>>@@ -82,7 +85,6 @@ void arch_cpu_idle(void)
>> 			: "=&r" (pstate)
>> 			: "i" (PSTATE_IE));
>> 	}
>>-	local_irq_enable();
>> }
>> 
>> #ifdef CONFIG_HOTPLUG_CPU
> 
> With this patch, the boot succeeds.

Thanks for testing, I'll get this merged upstream and to -stable.