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

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Date:   Wed, 17 Mar 2021 09:22:15 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Borislav Petkov <bp@...e.de>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the tip tree

On Wed, Mar 17, 2021 at 3:54 AM Borislav Petkov <bp@...e.de> wrote:
>
> + Ian.
>
> On Wed, Mar 17, 2021 at 03:08:58PM +1100, Stephen Rothwell wrote:
> > Hi all,
> >
> > After merging the tip tree, today's linux-next build (native perf)
> > failed like this:
> >
> > In file included from util/intel-pt-decoder/intel-pt-insn-decoder.c:15:
> > util/intel-pt-decoder/../../../arch/x86/lib/insn.c:14:10: fatal error: asm/inat.h: No such file or directory
> >    14 | #include <asm/inat.h> /*__ignore_sync_check__ */
> >       |          ^~~~~~~~~~~~
> >
> > This is a powerpc build of perf.  I can't see what caused this failure,
> > so I have used the version of the tip tree from next-20210316 for today.
>
> Yah, this has come up in the past during review but the wrong version
> somehow snuck in, sorry. ;-\
>
> Can you guys verify this fixes the build issue? I don't have a ppc build
> setup.
>
> Thx.

The <asm/emulate_prefix.h> path also needs fixing. With the following
I was able to build for arm64 and powerpc.

Thanks,
Ian

diff --git a/tools/arch/x86/lib/insn.c b/tools/arch/x86/lib/insn.c
index cd4dedde3265..968360bf2150 100644
--- a/tools/arch/x86/lib/insn.c
+++ b/tools/arch/x86/lib/insn.c
@@ -11,13 +11,13 @@
 #else
 #include <string.h>
 #endif
-#include <asm/inat.h> /*__ignore_sync_check__ */
-#include <asm/insn.h> /* __ignore_sync_check__ */
+#include "../include/asm/inat.h" /*__ignore_sync_check__ */
+#include "../include/asm/insn.h" /* __ignore_sync_check__ */

 #include <linux/errno.h>
 #include <linux/kconfig.h>

-#include <asm/emulate_prefix.h> /* __ignore_sync_check__ */
+#include "../include/asm/emulate_prefix.h" /* __ignore_sync_check__ */

 #define leXX_to_cpu(t, r)                                              \
 ({                                                                     \

> ---
> From 50d91054fc421e2a90923706d5ca79e941e28300 Mon Sep 17 00:00:00 2001
> From: Borislav Petkov <bp@...e.de>
> Date: Wed, 17 Mar 2021 11:33:04 +0100
> Subject: [PATCH] tools/insn: Restore the relative include paths for cross
>  building
>
> Building perf on ppc causes:
>
>   In file included from util/intel-pt-decoder/intel-pt-insn-decoder.c:15:
>   util/intel-pt-decoder/../../../arch/x86/lib/insn.c:14:10: fatal error: asm/inat.h: No such file or directory
>      14 | #include <asm/inat.h> /*__ignore_sync_check__ */
>         |          ^~~~~~~~~~~~
>
> Restore the relative include paths so that the compiler can find the
> headers.
>
> Fixes: 93281c4a9657 ("x86/insn: Add an insn_decode() API")
> Reported-by: Ian Rogers <irogers@...gle.com>
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> NOT-Signed-off-by: Borislav Petkov <bp@...e.de>
> ---
>  tools/arch/x86/lib/insn.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/arch/x86/lib/insn.c b/tools/arch/x86/lib/insn.c
> index cd4dedde3265..999fbd4c9bea 100644
> --- a/tools/arch/x86/lib/insn.c
> +++ b/tools/arch/x86/lib/insn.c
> @@ -11,8 +11,8 @@
>  #else
>  #include <string.h>
>  #endif
> -#include <asm/inat.h> /*__ignore_sync_check__ */
> -#include <asm/insn.h> /* __ignore_sync_check__ */
> +#include "../include/asm/inat.h" /* __ignore_sync_check__ */
> +#include "../include/asm/insn.h" /* __ignore_sync_check__ */
>
>  #include <linux/errno.h>
>  #include <linux/kconfig.h>
> --
> 2.29.2
>
> --
> Regards/Gruss,
>     Boris.
>
> SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg