Date: Sun, 16 Jun 2013 01:51:26 -0500
From: Rob Landley <rob@landley.net>
Subject: Re: Commit f9afbd45b0d0 broke mips r4k.
To: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-kernel@vger.kernel.org, sanjayl@kymasys.com, kvm@vger.kernel.org,
        linux-mips@linux-mips.org,
        Markos Chandras <markos.chandras@imgtec.com>
References: <1371090916.2776.104@driftwood>
	<20130613090002.GD7422@linux-mips.org>
In-Reply-To: <20130613090002.GD7422@linux-mips.org> (from
	ralf@linux-mips.org on Thu Jun 13 04:00:02 2013)
Message-Id: <1371365486.2776.113@driftwood>
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On 06/13/2013 04:00:02 AM, Ralf Baechle wrote:
> On Wed, Jun 12, 2013 at 09:35:16PM -0500, Rob Landley wrote:
> 
> > My aboriginal linux project builds tiny linux systems to run under
> > qemu, producing as close to the same system as possible across a
> > bunch of different architectures. The above change broke the mips
> > r4k build I've been running under qemu.
> >
> > Here's a toolchain and reproduction sequence:
> >
> >   wget http://landley.net/aboriginal/bin/cross-compiler-mips.tar.bz2
> >   tar xvjf cross-compiler-mips.tar.bz2
> >   export PATH=$PWD/cross-compiler-mips/bin:$PATH
> >   make ARCH=mips allnoconfig KCONFIG_ALLCONFIG=miniconfig.mips
> >   make CROSS_COMPILE=mips- ARCH=mips
> >
> > (The file miniconfig.mips is attached.)
> >
> > It ends:
> >
> >   CC      init/version.o
> >   LD      init/built-in.o
> > arch/mips/built-in.o: In function `local_r4k_flush_cache_page':
> > c-r4k.c:(.text+0xe278): undefined reference to  
> `kvm_local_flush_tlb_all'
> > c-r4k.c:(.text+0xe278): relocation truncated to fit: R_MIPS_26
> > against `kvm_local_flush_tlb_all'
> > arch/mips/built-in.o: In function `local_flush_tlb_range':
> > (.text+0xe938): undefined reference to `kvm_local_flush_tlb_all'
> > arch/mips/built-in.o: In function `local_flush_tlb_range':
> > (.text+0xe938): relocation truncated to fit: R_MIPS_26 against
> > `kvm_local_flush_tlb_all'
> > arch/mips/built-in.o: In function `local_flush_tlb_mm':
> > (.text+0xed38): undefined reference to `kvm_local_flush_tlb_all'
> > arch/mips/built-in.o: In function `local_flush_tlb_mm':
> > (.text+0xed38): relocation truncated to fit: R_MIPS_26 against
> > `kvm_local_flush_tlb_all'
> > kernel/built-in.o: In function `__schedule':
> > core.c:(.sched.text+0x16a0): undefined reference to
> > `kvm_local_flush_tlb_all'
> > core.c:(.sched.text+0x16a0): relocation truncated to fit: R_MIPS_26
> > against `kvm_local_flush_tlb_all'
> > mm/built-in.o: In function `use_mm':
> > (.text+0x182c8): undefined reference to `kvm_local_flush_tlb_all'
> > mm/built-in.o: In function `use_mm':
> > (.text+0x182c8): relocation truncated to fit: R_MIPS_26 against
> > `kvm_local_flush_tlb_all'
> > fs/built-in.o:(.text+0x7b50): more undefined references to
> > `kvm_local_flush_tlb_all' follow
> > fs/built-in.o: In function `flush_old_exec':
> > (.text+0x7b50): relocation truncated to fit: R_MIPS_26 against
> > `kvm_local_flush_tlb_all'
> >
> > Revert the above commit and it builds to the end.
> 
> Commit d414976d1ca721456f7b7c603a8699d117c2ec07 [MIPS: include:
> mmu_context.h: Replace VIRTUALIZATION with KVM] fixes the issue and
> was pulled by Linus only yesterday.  I cannot reproduce the error
> following your receipe using the latest Linux/MIPS tree.

Confirmed, that fixed it.

Thanks,

Rob--
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