From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CbYux-00040K-9C for user-mode-linux-devel@lists.sourceforge.net; Mon, 06 Dec 2004 22:33:47 -0800 Received: from smtp003.mail.ukl.yahoo.com ([217.12.11.34]) by sc8-sf-mx1.sourceforge.net with smtp (Exim 4.41) id 1CbYuv-0006Kr-Af for user-mode-linux-devel@lists.sourceforge.net; Mon, 06 Dec 2004 22:33:47 -0800 From: Blaisorblade Subject: Re: [uml-devel] Re: [uml-user] Any complaints about parallel make in 2.6.10-rc? References: <200412070628.26267.blaisorblade_spam@yahoo.it> <004301c4dc20$3dbbd280$0201a8c0@hawk> <200412070725.15921.blaisorblade_spam@yahoo.it> In-Reply-To: <200412070725.15921.blaisorblade_spam@yahoo.it> MIME-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_q+UtBmHxtVhIeSV" Message-Id: <200412070737.30905.blaisorblade_spam@yahoo.it> 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: Tue, 7 Dec 2004 07:37:30 +0100 To: user-mode-linux-devel@lists.sourceforge.net Cc: "Christopher S. Aker" , user-mode-linux-user@lists.sourceforge.net --Boundary-00=_q+UtBmHxtVhIeSV Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline On Tuesday 07 December 2004 07:25, Blaisorblade wrote: > On Tuesday 07 December 2004 06:47, Christopher S. Aker wrote: > > > Since somebody (maybe Christopher Aker) said that parallel make was > > > broken in 2.6.10-rc, I'm asking to report it in detail, if the > > > complaint is correct. > > > > Odd.. "make ARCH=um -jN" works, but "make -jN ARCH=um" doesn't. How did > > I miss that? > > ??? Well, missing such a difference is *obvious*, since it does not make > sense at all. I've tested both things... and it appears I get the same problems / success with both things: > I'm instead discovering a more interesting issue, due to some mainline > updates to Kconfig, preventing Ramdisk code to build. Trivial fix attached. > A less trivial fix, i.e. uml-depend-out-main-block-Kconfig.patch, cleaning > things up definitely (i.e. going to drop arch/um/Kconfig_block , which is a > selected duplicate of what's in drivers/block/Kconfig), is attached too. In the second one, I forgot to add UBD (and COW and CONFIG_MMAPER) config option to drivers/block/Kconfig, so use the updated version I'm attaching. -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade --Boundary-00=_q+UtBmHxtVhIeSV Content-Type: text/x-diff; charset="iso-8859-15"; name="uml-depend-out-main-block-Kconfig.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="uml-depend-out-main-block-Kconfig.patch" Finally, we end with this the need to update arch/um/Kconfig_block with changes in drivers/block/Kconfig. Signed-off-by: Paolo 'Blaisorblade' Giarrusso --- linux-2.6.10-rc-paolo/arch/um/Kconfig | 2 - linux-2.6.10-rc-paolo/drivers/block/Kconfig | 40 ++++++++++++++++++++++++++-- 2 files changed, 39 insertions(+), 3 deletions(-) diff -puN drivers/block/Kconfig~uml-depend-out-main-block-Kconfig drivers/block/Kconfig --- linux-2.6.10-rc/drivers/block/Kconfig~uml-depend-out-main-block-Kconfig 2004-12-07 07:35:05.993665856 +0100 +++ linux-2.6.10-rc-paolo/drivers/block/Kconfig 2004-12-07 07:35:39.037642408 +0100 @@ -6,7 +6,7 @@ menu "Block devices" config BLK_DEV_FD tristate "Normal floppy disk support" - depends on (!ARCH_S390 && !M68K && !IA64) || Q40 || (SUN3X && BROKEN) + depends on (!ARCH_S390 && !M68K && !IA64 && !USERMODE) || Q40 || (SUN3X && BROKEN) ---help--- If you want to use the floppy disk drive(s) of your PC under Linux, say Y. Information about this driver, especially important for IBM @@ -208,6 +208,39 @@ config BLK_DEV_UMEM one is chosen dynamically. Use "devfs" or look in /proc/devices for the device number +config BLK_DEV_UBD + bool "Virtual block device" + depends on USERMODE + help + The User-Mode Linux port includes a driver called UBD which will let + you access arbitrary files on the host computer as block devices. + Unless you know that you do not need such virtual block devices say + Y here. + +config BLK_DEV_UBD_SYNC + bool "Always do synchronous disk IO for UBD" + depends on BLK_DEV_UBD + help + Writes to the virtual block device are not immediately written to the + host's disk; this may cause problems if, for example, the User-Mode + Linux 'Virtual Machine' uses a journalling filesystem and the host + computer crashes. + + Synchronous operation (i.e. always writing data to the host's disk + immediately) is configurable on a per-UBD basis by using a special + kernel command line option. Alternatively, you can say Y here to + turn on synchronous operation by default for all block devices. + + If you're running a journalling file system (like reiserfs, for + example) in your virtual machine, you will want to say Y here. If + you care for the safety of the data in your virtual machine, Y is a + wise choice too. In all other cases (for example, if you're just + playing around with User-Mode Linux) you can choose N. + +config BLK_DEV_COW_COMMON + bool + default BLK_DEV_UBD + config BLK_DEV_LOOP tristate "Loopback device support" ---help--- @@ -384,9 +417,11 @@ config INITRAMFS_SOURCE If you are not sure, leave it blank. +#XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64 +#for instance. config LBD bool "Support for Large Block Devices" - depends on X86 || MIPS32 || PPC32 || ARCH_S390_31 || SUPERH + depends on X86 || MIPS32 || PPC32 || ARCH_S390_31 || SUPERH || USERMODE help Say Y here if you want to attach large (bigger than 2TB) discs to your machine, or if you want to have a raid or loopback device @@ -394,6 +429,7 @@ config LBD config CDROM_PKTCDVD tristate "Packet writing on CD/DVD media" + depends on !USERMODE help If you have a CDROM drive that supports packet writing, say Y to include preliminary support. It should work with any MMC/Mt Fuji diff -puN arch/um/Kconfig~uml-depend-out-main-block-Kconfig arch/um/Kconfig --- linux-2.6.10-rc/arch/um/Kconfig~uml-depend-out-main-block-Kconfig 2004-12-07 07:35:05.995665552 +0100 +++ linux-2.6.10-rc-paolo/arch/um/Kconfig 2004-12-07 07:35:05.999664944 +0100 @@ -238,7 +238,7 @@ source "drivers/base/Kconfig" source "arch/um/Kconfig_char" -source "arch/um/Kconfig_block" +source "drivers/block/Kconfig" config NETDEVICES bool _ --Boundary-00=_q+UtBmHxtVhIeSV-- ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel