[PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI

[Marc Zyngier]

On 2020-09-28 03:43, ito-yuichi at fujitsu.com wrote:
> Hi Marc, Sumit
> 
> I would appreciate if you have any advice on this patch.

I haven't had a chance to look into it, as I'm not even sure I'll
take the core series in the first place (there are outstanding
regressions I can't reproduce, let alone fix them).

> 
> Yuichi Ito
> 
>> -----Original Message-----
>> From: Yuichi Ito <ito-yuichi at fujitsu.com>
>> Sent: Thursday, September 24, 2020 1:43 PM
>> To: maz at kernel.org; sumit.garg at linaro.org; tglx at linutronix.de;
>> jason at lakedaemon.net; catalin.marinas at arm.com; will at kernel.org
>> Cc: linux-arm-kernel at lists.infradead.org; 
>> linux-kernel at vger.kernel.org; Ito,
>> Yuichi/伊藤 有一 <ito-yuichi at fujitsu.com>
>> Subject: [PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be
>> pseudo-NMI
>> 
>> Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI
>> 
>> This patchset enables IPI_CPU_CRASH_STOP IPI to be pseudo-NMI.
>> This allows kdump to collect system information even when the CPU is 
>> in a
>> HARDLOCKUP state.
>> 
>> Only IPI_CPU_CRASH_STOP uses NMI and the other IPIs remain normal
>> IRQs.
>> 
>> The patch has been tested on ThunderX.

Which ThunderX? TX2 (at least the incarnation I used in the past) wasn't
able to correctly deal with priorities.

         M.
-- 
Jazz is not dead. It just smells funny...