linux-kernel - Re: linux-next: build failure after merge of the powerpc tree

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Message-ID: <1452671073.7404.1.camel@ellerman.id.au>
Date:	Wed, 13 Jan 2016 18:44:33 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...ts.ozlabs.org
Cc:	Michael Neuling <mikey@...ling.org>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the powerpc tree

On Wed, 2016-01-13 at 11:16 +0530, Aneesh Kumar K.V wrote:
> Michael Ellerman <mpe@...erman.id.au> writes:
> > On Thu, 2016-01-07 at 19:16 +1100, Stephen Rothwell wrote:
> > > After merging the powerpc tree, today's linux-next build (powerpc64
> > > allnoconfig) failed like this:
> > > 
> > > arch/powerpc/mm/hash_utils_64.c: In function 'get_paca_psize':
> > > arch/powerpc/mm/hash_utils_64.c:869:19: error: 'struct paca_struct' has no member named 'context'
> > >   return get_paca()->context.user_psize;
> > >                    ^
> > > arch/powerpc/mm/hash_utils_64.c:870:1: error: control reaches end of non-void function [-Werror=return-type]
> > >  }
> > >  ^
> > > 
> > > Caused by commit
> > > 
> > >   2fc251a8dda5 ("powerpc: Copy only required pieces of the mm_context_t to the paca")
> > 
> > Well that's rather embarrassing, for Mikey ;D

> > > This build has CONFIG_PPC_MM_SLICES not set ...
> > 
> > Ugh, but it would seem none of our defconfigs do :/
> 
> 4K page size with hugetlb disabled will get that 

Yeah, but none of our defconfigs do that.

I've got a kisskb target for it now:

  http://kisskb.ellerman.id.au/kisskb/target/28577/

cheers