From: Richard Weinberger <richard@nod.at>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net,
Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>,
Christoph Lameter <cl@linux.com>, Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>
Subject: [PATCH 1/9] um: disable CMPXCHG_DOUBLE as it breaks UML build
Date: Mon, 29 Aug 2011 18:03:54 +0200 [thread overview]
Message-ID: <1314633842-24515-2-git-send-email-richard@nod.at> (raw)
In-Reply-To: <1314633842-24515-1-git-send-email-richard@nod.at>
From: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Commit b789ef518b2a7231b0668c813f677cee528a9d3f tests for cmpxchg_double
support in the SLUB code and it breaks UML builds with SLUB. Since UML
does not support checking for CPU features, disable CMPXCHG_DOUBLE just
like CMPXCHG_LOCAL is disabled for UML.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
arch/um/Kconfig.x86 | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
index d31ecf3..21bebe6 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -10,6 +10,10 @@ config CMPXCHG_LOCAL
bool
default n
+config CMPXCHG_DOUBLE
+ bool
+ default n
+
source "arch/x86/Kconfig.cpu"
endmenu
--
1.7.6.1
next prev parent reply other threads:[~2011-08-29 16:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-29 16:03 UML fixes for 3.1-rcX Richard Weinberger
2011-08-29 16:03 ` Richard Weinberger [this message]
2011-08-29 16:03 ` [uml-devel] [PATCH 2/9] um: drivers/xterm.c: fix a file descriptor leak Richard Weinberger
2011-08-29 16:03 ` [uml-devel] [PATCH 3/9] um: Save FPU registers between task switches Richard Weinberger
2011-08-29 16:03 ` [uml-devel] [PATCH 4/9] um: fix oopsable race in line_close() Richard Weinberger
2011-08-29 16:03 ` [uml-devel] [PATCH 5/9] um: winch_interrupt() can happen inside of free_winch() Richard Weinberger
2011-08-29 16:03 ` [uml-devel] [PATCH 6/9] um: fix free_winch() mess Richard Weinberger
2011-08-29 16:04 ` [uml-devel] [PATCH 7/9] um: PTRACE_[GS]ETFPXREGS had been wired on the wrong subarch Richard Weinberger
-- strict thread matches above, loose matches on Subject: below --
2011-08-29 16:13 UML fixes for 3.1-rcX (2nd try) Richard Weinberger
2011-08-29 16:13 ` [uml-devel] [PATCH 1/9] um: disable CMPXCHG_DOUBLE as it breaks UML build Richard Weinberger
2011-08-29 17:35 ` Christoph Lameter
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