From: tip-bot for Borislav Petkov <bp@alien8.de>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
tglx@linutronix.de, hpa@linux.intel.com, bp@alien8.de
Subject: [tip:x86/urgent] um, hweight: Fix UML boot crash due to x86 optimized hweight
Date: Thu, 10 Jun 2010 23:43:04 GMT [thread overview]
Message-ID: <tip-055c47272b8f5679d08ccc57efea3cb4aaeb5fc6@git.kernel.org> (raw)
In-Reply-To: <4C0F4B00.4090307@panasas.com>
Commit-ID: 055c47272b8f5679d08ccc57efea3cb4aaeb5fc6
Gitweb: http://git.kernel.org/tip/055c47272b8f5679d08ccc57efea3cb4aaeb5fc6
Author: Borislav Petkov <bp@alien8.de>
AuthorDate: Wed, 9 Jun 2010 11:04:16 +0300
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Thu, 10 Jun 2010 15:24:30 -0700
um, hweight: Fix UML boot crash due to x86 optimized hweight
Apparently UML cannot stomach callee reg-saving trickery
introduced with d61931d89be506372d01a90d1755f6d0a9fafe2d
(x86: Add optimized popcnt variants) and oopses during boot:
http://marc.info/?l=linux-kernel&m=127522065202435&w=2
Redirect arch_hweight.h include from the x86 portion to the generic
arch_hweight.h which is a fallback to the software hweight routines.
LKML-Reference: <201005271944.09541.toralf.foerster@gmx.de>
Signed-off-by: Borislav Petkov <bp@alien8.de>
LKML-Reference: <4C0F4B00.4090307@panasas.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/um/include/asm/arch_hweight.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/um/include/asm/arch_hweight.h b/arch/um/include/asm/arch_hweight.h
new file mode 100644
index 0000000..c656cf4
--- /dev/null
+++ b/arch/um/include/asm/arch_hweight.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_UM_HWEIGHT_H
+#define _ASM_UM_HWEIGHT_H
+
+#include <asm-generic/bitops/arch_hweight.h>
+
+#endif
prev parent reply other threads:[~2010-06-10 23:43 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-27 17:44 current git kernel crashes UML system during boot Toralf Förster
2010-05-30 11:39 ` Geert Uytterhoeven
2010-05-30 11:57 ` Geert Uytterhoeven
2010-05-30 15:02 ` Borislav Petkov
2010-05-30 15:18 ` Geert Uytterhoeven
2010-05-30 15:46 ` Borislav Petkov
2010-05-30 15:28 ` Toralf Förster
2010-05-30 17:03 ` [PATCH] x86, hweight: Fix UML boot crash Borislav Petkov
2010-05-30 18:36 ` H. Peter Anvin
2010-05-30 19:39 ` Borislav Petkov
2010-05-30 20:17 ` Borislav Petkov
2010-05-30 21:09 ` H. Peter Anvin
2010-06-12 13:34 ` [uml-devel] " Paolo Giarrusso
2010-06-12 14:18 ` Borislav Petkov
2010-06-12 16:01 ` Paolo Giarrusso
2010-06-12 16:34 ` Borislav Petkov
2010-06-12 18:37 ` Geert Uytterhoeven
2010-06-13 6:58 ` Borislav Petkov
2010-05-31 13:55 ` Toralf Förster
2010-05-31 14:10 ` Borislav Petkov
2010-05-31 14:36 ` Toralf Förster
2010-06-14 9:49 ` Toralf Förster
2010-06-14 10:26 ` [uml-devel] " Paolo Giarrusso
2010-06-14 12:54 ` Toralf Förster
2010-06-14 13:00 ` Borislav Petkov
2010-06-14 13:44 ` Toralf Förster
2010-06-14 14:39 ` Geert Uytterhoeven
2010-06-14 15:11 ` Toralf Förster
2010-06-14 15:20 ` H. Peter Anvin
2010-05-31 14:25 ` [uml-devel] " Boaz Harrosh
2010-05-31 2:32 ` Jeff Dike
2010-05-31 13:51 ` Borislav Petkov
2010-05-31 15:56 ` Jeff Dike
2010-05-31 16:29 ` Borislav Petkov
[not found] ` <tip-cc7f0a7b3004a4ca0bfef0e1ca79f2e0da6ca1b0@git.kernel.org>
2010-06-09 22:43 ` [tip:x86/urgent] " H. Peter Anvin
2010-06-10 5:32 ` Geert Uytterhoeven
2010-06-10 6:26 ` H. Peter Anvin
2010-06-09 8:04 ` [PATCH resend] um, " Boaz Harrosh
2010-06-09 8:09 ` [uml-devel] " Boaz Harrosh
2010-06-09 8:46 ` Geert Uytterhoeven
2010-06-09 9:08 ` Boaz Harrosh
2010-06-09 9:32 ` Américo Wang
2010-06-09 18:29 ` H. Peter Anvin
2010-06-14 16:08 ` Boaz Harrosh
2010-06-14 16:41 ` H. Peter Anvin
2010-06-14 18:18 ` Boaz Harrosh
2010-06-09 16:39 ` Boaz Harrosh
2010-06-10 23:43 ` tip-bot for Borislav Petkov [this message]
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