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* [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build
@ 2011-07-23 16:21 Thadeu Lima de Souza Cascardo
  2011-07-25 13:58 ` Christoph Lameter
  2011-07-25 14:00 ` Richard Weinberger
  0 siblings, 2 replies; 3+ messages in thread
From: Thadeu Lima de Souza Cascardo @ 2011-07-23 16:21 UTC (permalink / raw)
  To: jdike
  Cc: user-mode-linux-devel, linux-kernel,
	Thadeu Lima de Souza Cascardo, Christoph Lameter,
	Richard Weinberger

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


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build
  2011-07-23 16:21 [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build Thadeu Lima de Souza Cascardo
@ 2011-07-25 13:58 ` Christoph Lameter
  2011-07-25 14:00 ` Richard Weinberger
  1 sibling, 0 replies; 3+ messages in thread
From: Christoph Lameter @ 2011-07-25 13:58 UTC (permalink / raw)
  To: Thadeu Lima de Souza Cascardo
  Cc: jdike, user-mode-linux-devel, linux-kernel, Richard Weinberger



Acked-by: Christoph Lameter <cl@linux.com>


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build
  2011-07-23 16:21 [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build Thadeu Lima de Souza Cascardo
  2011-07-25 13:58 ` Christoph Lameter
@ 2011-07-25 14:00 ` Richard Weinberger
  1 sibling, 0 replies; 3+ messages in thread
From: Richard Weinberger @ 2011-07-25 14:00 UTC (permalink / raw)
  To: Thadeu Lima de Souza Cascardo
  Cc: jdike, user-mode-linux-devel, linux-kernel, Christoph Lameter

Am Samstag 23 Juli 2011, 18:21:51 schrieb Thadeu Lima de Souza Cascardo:
> 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>

Applied!

Thanks,
//richard

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2011-07-25 14:00 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2011-07-23 16:21 [PATCH] um: disable CMPXCHG_DOUBLE as it breaks UML build Thadeu Lima de Souza Cascardo
2011-07-25 13:58 ` Christoph Lameter
2011-07-25 14:00 ` Richard Weinberger

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