From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
Stephen Rothwell <sfr@canb.auug.org.au>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Luis R. Rodriguez" <mcgrof@kernel.org>,
linux-next@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Fengguang Wu <fengguang.wu@intel.com>,
Guenter Roeck <linux@roeck-us.net>
Subject: Re: powerpc allyesconfig / allmodconfig linux-next next-20160729 - next-20160729 build failures
Date: Fri, 05 Aug 2016 18:01:13 +0200 [thread overview]
Message-ID: <2852406.SOgyPXcJfO@wuerfel> (raw)
In-Reply-To: <20160805222625.30627e96@roar.ozlabs.ibm.com>
On Friday, August 5, 2016 10:26:25 PM CEST Nicholas Piggin wrote:
> On Fri, 05 Aug 2016 12:17:27 +0200
> Arnd Bergmann <arnd@arndb.de> wrote:
> > and I also get link errors for the .text.fixup section
> > for any users of __put_user() in really large kernels:
> > net/batman-adv/batman-adv.o:(.text.fixup+0x4): relocation truncated to fit: R_ARM_JUMP24 against `.text.batadv_log_read'
>
> This may be fixed by fixing the linker script to bring in the new
> sections properly (see new patchset).
>
> If not, then if you can combine the sections rather than have them
> consecutive in the output, e.g.,:
>
> *(.text .text.fixup)
>
> Rather than
>
> *(.text)
> *(.text.fixup)
>
> Then the linker has more freedom to rearrange them. I realize it's
> not that simple with ARM's .text.fixup, but maybe that helps you
> get it to work.
This did the trick:
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 0ec807d69f18..7a3ad269fa23 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -433,7 +433,7 @@
* during second ld run in second ld pass when generating System.map */
#define TEXT_TEXT \
ALIGN_FUNCTION(); \
- *(.text.hot .text .text.fixup .text.unlikely) \
+ *(.text.hot .text .text.* .text.fixup .text.unlikely) \
*(.ref.text) \
MEM_KEEP(init.text) \
MEM_KEEP(exit.text) \
It also got much faster again, the link time for an allyesconfig
kernel is now 18 minutes instead of 10 hours, but it's still
much worse than the 2 minutes I had earlier or the four minutes
with the previous patch.
Arnd
next prev parent reply other threads:[~2016-08-05 16:02 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-02 20:07 powerpc allyesconfig / allmodconfig linux-next next-20160729 - next-20160729 build failures Luis R. Rodriguez
2016-08-02 21:58 ` Guenter Roeck
2016-08-02 22:02 ` Luis R. Rodriguez
2016-08-02 22:34 ` Arnd Bergmann
2016-08-03 0:23 ` Stephen Rothwell
2016-08-03 7:52 ` Arnd Bergmann
2016-08-03 12:19 ` Stephen Rothwell
2016-08-03 12:29 ` Arnd Bergmann
2016-08-03 15:37 ` Nicholas Piggin
2016-08-03 18:52 ` Arnd Bergmann
2016-08-03 19:44 ` Segher Boessenkool
2016-08-03 20:13 ` Arnd Bergmann
2016-08-11 12:43 ` Nicholas Piggin
2016-08-11 13:04 ` Arnd Bergmann
2016-08-11 13:12 ` Nicholas Piggin
2016-08-11 13:49 ` [TESTING] kbuild: link drivers subdirectories separately Arnd Bergmann
2016-08-11 15:46 ` Arnd Bergmann
2016-08-04 0:10 ` powerpc allyesconfig / allmodconfig linux-next next-20160729 - next-20160729 build failures Stephen Rothwell
2016-08-04 9:00 ` Arnd Bergmann
2016-08-04 10:37 ` Arnd Bergmann
2016-08-04 11:47 ` Nicholas Piggin
2016-08-04 12:09 ` Arnd Bergmann
2016-08-04 12:31 ` Nicholas Piggin
2016-08-04 13:54 ` Nicholas Piggin
2016-08-04 15:43 ` Arnd Bergmann
2016-08-04 16:10 ` Arnd Bergmann
2016-08-04 17:06 ` Segher Boessenkool
2016-08-05 8:41 ` Nicholas Piggin
2016-08-05 10:17 ` Arnd Bergmann
2016-08-05 12:26 ` Nicholas Piggin
2016-08-05 16:01 ` Arnd Bergmann [this message]
2016-08-05 16:16 ` Nicholas Piggin
2016-08-05 19:16 ` Arnd Bergmann
2016-08-06 4:17 ` Nicholas Piggin
2016-08-06 21:13 ` Arnd Bergmann
2016-08-03 2:46 ` Michael Ellerman
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