From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1E9q0r-0001bL-27 for user-mode-linux-devel@lists.sourceforge.net; Mon, 29 Aug 2005 13:13:49 -0700 Received: from lakshmi.addtoit.com ([198.99.130.6] helo=lakshmi.solana.com) by mail.sourceforge.net with esmtp (Exim 4.44) id 1E9q0q-0000hK-J8 for user-mode-linux-devel@lists.sourceforge.net; Mon, 29 Aug 2005 13:13:49 -0700 Message-Id: <200508292007.j7TK72Or029927@ccure.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii From: Jeff Dike Subject: [uml-devel] [PATCH 4/9] UML - Mark SMP on UML/x86_64 as broken Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 29 Aug 2005 16:07:02 -0400 To: akpm@osdl.org Cc: linux-kernel@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net, Al Viro Noticed by Al Viro - SMP on x86_64 is fundamentally broken due to UML's reuse of the host arch's percpu stuff. This is OK on x86, but the x86_64 pda stuff just won't work for UML. Signed-off-by: Jeff Dike Index: linux-2.6.13-rc6/arch/um/Kconfig =================================================================== --- linux-2.6.13-rc6.orig/arch/um/Kconfig 2005-08-15 12:03:07.000000000 -0400 +++ linux-2.6.13-rc6/arch/um/Kconfig 2005-08-15 14:04:23.000000000 -0400 @@ -196,7 +196,7 @@ config SMP bool "Symmetric multi-processing support (EXPERIMENTAL)" default n - depends on MODE_TT && EXPERIMENTAL + depends on (MODE_TT && EXPERIMENTAL && !SMP_BROKEN) || (BROKEN && SMP_BROKEN) help This option enables UML SMP support. It is NOT related to having a real SMP box. Not directly, at least. Index: linux-2.6.13-rc6/arch/um/Kconfig_x86_64 =================================================================== --- linux-2.6.13-rc6.orig/arch/um/Kconfig_x86_64 2005-08-08 12:11:18.000000000 -0400 +++ linux-2.6.13-rc6/arch/um/Kconfig_x86_64 2005-08-15 14:04:27.000000000 -0400 @@ -33,3 +33,7 @@ config ARCH_REUSE_HOST_VSYSCALL_AREA bool default n + +config SMP_BROKEN + bool + default y ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel