From: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
To: jdike@addtoit.com
Cc: user-mode-linux-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org,
Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>,
Christoph Lameter <cl@linux.com>,
Richard Weinberger <richard@nod.at>
Subject: [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build
Date: Sat, 23 Jul 2011 13:21:51 -0300 [thread overview]
Message-ID: <1311438111-10961-1-git-send-email-cascardo@holoscopio.com> (raw)
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>
---
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
--
1.7.5.4
next reply other threads:[~2011-07-23 16:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-23 16:21 Thadeu Lima de Souza Cascardo [this message]
2011-07-25 13:58 ` Christoph Lameter
2011-07-25 14:00 ` Richard Weinberger
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