linux-kernel - Re: [6/6] ppc: ebpf/jit: Implement JIT compiler for extended BPF

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Date:	Tue, 21 Jun 2016 21:04:03 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	netdev@...r.kernel.org, Matt Evans <matt@...abs.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Alexei Starovoitov <ast@...com>,
	Denis Kirjanov <kda@...ux-powerpc.org>,
	Paul Mackerras <paulus@...ba.org>,
	"David S. Miller" <davem@...emloft.net>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Subject: Re: [6/6] ppc: ebpf/jit: Implement JIT compiler for extended BPF

On Tue, 2016-06-21 at 12:28 +0530, Naveen N. Rao wrote:
> On 2016/06/21 09:38AM, Michael Ellerman wrote:
> > On Sun, 2016-06-19 at 23:06 +0530, Naveen N. Rao wrote:
> > > 
> > > #include <asm/kprobes.h>
> > > 
> > > in bpf_jit_comp64.c
> > > 
> > > Can you please check if it resolves the build error?
> > 
> > Can you? :D
> 
> :)
> Sorry, I should have explained myself better. I did actually try your 
> config and I was able to reproduce the build error. After the above 
> #include, that error went away, but I saw some vdso related errors. I 
> thought I was doing something wrong and needed a different setup for 
> that particular kernel config, which is why I requested your help in the 
> matter. I just didn't do a good job of putting across that message...
 
Ah OK. Not sure why you're seeing VDSO errors?

> Note to self: randconfig builds *and* more time drafting emails :)

No stress. You don't need to do randconfig builds, or even build all the
arch/powerpc/ configs, just try to do a reasonable set, something like - ppc64,
powernv, pseries, pmac32, ppc64e.

I'm happy to catch the esoteric build failures.

> Do you want me to respin the patches?

No that's fine, I'll fix it up here.

cheers