Re: [PATCH] arch/{mips,sparc,microblaze,powerpc}: Don't enable pagefault/preempt twice

[Guenter Roeck]

On 6/3/20 2:14 PM, Ira Weiny wrote:
> On Wed, Jun 03, 2020 at 01:57:36PM -0700, Andrew Morton wrote:
>> On Thu, 21 May 2020 10:42:50 -0700 Ira Weiny <ira.weiny@xxxxxxxxx> wrote:
>>
>>>>>
>>>>> Actually it occurs to me that the patch consolidating kmap_prot is odd for
>>>>> sparc 32 bit...
>>>>>
>>>>> Its a long shot but could you try reverting this patch?
>>>>>
>>>>> 4ea7d2419e3f kmap: consolidate kmap_prot definitions
>>>>>
>>>>
>>>> That is not easy to revert, unfortunately, due to several follow-up patches.
>>>
>>> I have gotten your sparc tests to run and they all pass...
>>>
>>> 08:10:34 > ../linux-build-test/rootfs/sparc/run-qemu-sparc.sh 
>>> Build reference: v5.7-rc4-17-g852b6f2edc0f
>>>
>>> Building sparc32:SPARCClassic:nosmp:scsi:hd ... running ......... passed
>>> Building sparc32:SPARCbook:nosmp:scsi:cd ... running ......... passed
>>> Building sparc32:LX:nosmp:noapc:scsi:hd ... running ......... passed
>>> Building sparc32:SS-4:nosmp:initrd ... running ......... passed
>>> Building sparc32:SS-5:nosmp:scsi:hd ... running ......... passed
>>> Building sparc32:SS-10:nosmp:scsi:cd ... running ......... passed
>>> Building sparc32:SS-20:nosmp:scsi:hd ... running ......... passed
>>> Building sparc32:SS-600MP:nosmp:scsi:hd ... running ......... passed
>>> Building sparc32:Voyager:nosmp:noapc:scsi:hd ... running ......... passed
>>> Building sparc32:SS-4:smp:scsi:hd ... running ......... passed
>>> Building sparc32:SS-5:smp:scsi:cd ... running ......... passed
>>> Building sparc32:SS-10:smp:scsi:hd ... running ......... passed
>>> Building sparc32:SS-20:smp:scsi:hd ... running ......... passed
>>> Building sparc32:SS-600MP:smp:scsi:hd ... running ......... passed
>>> Building sparc32:Voyager:smp:noapc:scsi:hd ... running ......... passed
>>>
>>> Is there another test I need to run?
>>
>> This all petered out, but as I understand it, this patchset still might
>> have issues on various architectures.
>>
>> Can folks please provide an update on the testing status?
> 
> I believe the tests were failing for Guenter due to another patch set...[1]
> 
> My tests with just this series are working.
> 
>>From my understanding the other failures were unrelated.[2]
> 
> 	<quote Mike Rapoport>
> 	I've checked the patch above on top of the mmots which already has
> 	Ira's patches and it booted fine. I've used sparc32_defconfig to build
> 	the kernel and qemu-system-sparc with default machine and CPU.
> 	</quote>
> 
> Mike, am I wrong?  Do you think the kmap() patches are still causing issues?
> 

For my part, all I can say is that -next is in pretty bad shape right now.
The summary of my tests says:

Build results:
	total: 151 pass: 130 fail: 21
Qemu test results:
	total: 430 pass: 375 fail: 55

sparc32 smp images in next-20200603 still crash for me with a spinlock
recursion. s390 images hang early in boot. Several others (alpha, arm64,
various ppc) don't even compile. I can run some more bisects over time,
but this is becoming a full-time job :-(.

Guenter