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Date: Thu, 24 Mar 2016 11:01:55 -0700
From: Guenter Roeck <linux@roeck-us.net>
To: Sasha Levin <sasha.levin@oracle.com>
Cc: stable <stable@vger.kernel.org>
Subject: Re: Build error in 3.18.y-stable-queue (s390)
Message-ID: <20160324180155.GA15991@roeck-us.net>
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On Thu, Mar 24, 2016 at 08:38:27AM -0400, Sasha Levin wrote:
> Thanks for the report Guenter!
> 
> On 03/23/2016 12:21 AM, Guenter Roeck wrote:
> > On 03/22/2016 08:42 PM, Guenter Roeck wrote:
> >> Hi Sasha,
> >>
> >> s390 builds in v3.18.y-stable-queue fail as follows.
> >>
> >> ./arch/s390/include/asm/mmu_context.h: In function 'init_new_context':
> >> ./arch/s390/include/asm/mmu_context.h:33:3: error: implicit declaration of function 'mm_inc_nr_pmds'
> >>
> >> Culprit appears to be 's390/mm: four page table levels vs. fork'. It uses mm_inc_nr_pmds(),
> >> which does not exist in v3.18.
> 
> Should be fixed, I backported "mm: account pmd page tables to the process" as well.
> 
> >> I noticed that arm64:allmodconfig builds fail as well, but that is not a new problem and
> >> only seen with gcc 5.2 (or at least not with gcc 4.9.1). I'll see if I can track this down.
> >>
> > 
> > Fixing the arm64 problem will require patch f5e0a12ca2d9 ("arm64: psci: move psci firmware
> > calls out of line"). The patch doesn't apply cleanly; there is a minor conflict in the
> > arm64 Makefile. Let me know if you need me to send a backport.
> 
> I've grabbed that commit.
> 

Now I get:

alpha, m32r, m68k, microblaze, parisc, sparc:

mm/mmap.c: In function 'exit_mmap':
mm/mmap.c:2786:2: error: 'PUD_SHIFT' undeclared

s390:

./arch/s390/include/asm/mmu_context.h: In function 'init_new_context':
./arch/s390/include/asm/mmu_context.h:30:22: error:
	'_ASCE_TYPE_REGION3' undeclared

Guenter