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* Kbuild: arch: look for generated headers in obtreeArnd Bergmann2016-07-181-2/+2
| | | | | | | | | | | | | | | | | There are very few files that need add an -I$(obj) gcc for the preprocessor or the assembler. For C files, we add always these for both the objtree and srctree, but for the other ones we require the Makefile to add them, and Kbuild then adds it for both trees. As a preparation for changing the meaning of the -I$(obj) directive to only refer to the srctree, this changes the two instances in arch/x86 to use an explictit $(objtree) prefix where needed, otherwise we won't find the headers any more, as reported by the kbuild 0day builder. arch/x86/realmode/rm/realmode.lds.S:75:20: fatal error: pasyms.h: No such file or directory Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Marek <mmarek@suse.com>
* arch: um: fix error when linking vmlinux.Lorenzo Colitti2015-12-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | On gcc Ubuntu 4.8.4-2ubuntu1~14.04, linking vmlinux fails with: arch/um/os-Linux/built-in.o: In function `os_timer_create': /android/kernel/android/arch/um/os-Linux/time.c:51: undefined reference to `timer_create' arch/um/os-Linux/built-in.o: In function `os_timer_set_interval': /android/kernel/android/arch/um/os-Linux/time.c:84: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_remain': /android/kernel/android/arch/um/os-Linux/time.c:109: undefined reference to `timer_gettime' arch/um/os-Linux/built-in.o: In function `os_timer_one_shot': /android/kernel/android/arch/um/os-Linux/time.c:132: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_disable': /android/kernel/android/arch/um/os-Linux/time.c:145: undefined reference to `timer_settime' This is because -lrt appears in the generated link commandline after arch/um/os-Linux/built-in.o. Fix this by removing -lrt from arch/um/Makefile and adding it to the UM-specific section of scripts/link-vmlinux.sh. Signed-off-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: Switch clocksource to hrtimersAnton Ivanov2015-11-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UML is using an obsolete itimer call for all timers and "polls" for kernel space timer firing in its userspace portion resulting in a long list of bugs and incorrect behaviour(s). It also uses ITIMER_VIRTUAL for its timer which results in the timer being dependent on it running and the cpu load. This patch fixes this by moving to posix high resolution timers firing off CLOCK_MONOTONIC and relaying the timer correctly to the UML userspace. Fixes: - crashes when hosts suspends/resumes - broken userspace timers - effecive ~40Hz instead of what they should be. Note - this modifies skas behavior by no longer setting an itimer per clone(). Timer events are relayed instead. - kernel network packet scheduling disciplines - tcp behaviour especially under load - various timer related corner cases Finally, overall responsiveness of userspace is better. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Anton Ivanov <aivanov@brocade.com> [rw: massaged commit message] Signed-off-by: Richard Weinberger <richard@nod.at>
* um: Fix out-of-tree buildRichard Weinberger2015-10-191-2/+2
| | | | | | | | | | | Commit 30b11ee9a (um: Remove copy&paste code from init.h) uncovered an issue wrt. out-of-tree builds. For out-of-tree builds, we must not rely on relative paths. Before 30b11ee9a it worked by chance as no host code included generated header files. Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: Stop abusing __KERNEL__Richard Weinberger2015-05-311-3/+4
| | | | | | | | Currently UML is abusing __KERNEL__ to distinguish between kernel and host code (os-Linux). It is better to use a custom define such that existing users of __KERNEL__ don't get confused. Signed-off-by: Richard Weinberger <richard@nod.at>
* kbuild: use relative path more to include MakefileMasahiro Yamada2015-04-021-3/+3
| | | | | | | | | | | | | Prior to this commit, it was impossible to use relative path to include Makefiles from the top level Makefile because the option "--include-dir=$(srctree)" becomes effective when Make enters into sub Makefiles. To use relative path in any places, this commit moves the option above the "sub-make" target. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* um: Fix for relative objtree when generating x86 headersMichal Marek2014-06-051-2/+1
| | | | | | | | | | In an O= build, rely on the generated Makefile to call the main Makefile properly. When building in the source tree, we do not need to specify the -C and O= either. This fixes the problem when $(objtree) is a relative path and the -C changes the directory. Reported-by: Richard Weinberger <richard.weinberger@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* um: Build always with -mcmodel=large on 64bitRichard Weinberger2013-12-011-5/+4
| | | | | | | | | | On UML SUBARCH can be x86, x86_64 and i386 and if it is x86 we use uname -m to select a defconfig. Therefore we can no longer use -mcmodel=large only if SUBARCH is x86_64. Reported-and-tested-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* arch/um: make it work with defconfig and x86_64Ramkumar Ramachandra2013-11-171-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/um/defconfig only lists one default configuration, and that applies only to the i386 architecture. Replace it with two minimal configuration files generated using `make savedefconfig`: i386_defconfig and x86_64_defconfig The build scripts now require two updates: 1. um's Kconfig (arch/x86/um/Kconfig) should specify an ARCH_DEFCONFIG section explicitly pointing to these scripts if the required variables are set. Take care to remove the DEFCONFIG_LIST section defined in the included file arch/um/Kconfig.common. 2. um's Makefile (arch/um/Makefile) should set KBUILD_DEFCONFIG properly for the top-level Makefile to pick up. Copy the logic in arch/x86/Makefile to properly pick the defconfig file depending on the actual architecture; except we're working with $SUBARCH here, instead of $ARCH. Now, you can do: $ ARCH=um make defconfig $ ARCH=um make and successfully build User-Mode Linux on an x86_64 box in default configuration. Cc: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* UAPI: Partition the header include path sets and add uapi/ header directoriesDavid Howells2012-10-021-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Partition the header include path flags into two sets, one for kernelspace builds and one for userspace builds. Add the following directories to build after the ordinary include directories so that #include will pick up the UAPI header directly if the kernel header has been moved there. The userspace set (represented by the USERINCLUDE make variable) contains: -I $(srctree)/arch/$(hdr-arch)/include/uapi -I arch/$(hdr-arch)/include/generated/uapi -I $(srctree)/include/uapi -I include/generated/uapi -include $(srctree)/include/linux/kconfig.h and the kernelspace set (represented by the LINUXINCLUDE make variable) contains: -I $(srctree)/arch/$(hdr-arch)/include -I arch/$(hdr-arch)/include/generated -I $(srctree)/include -I include --- if not building in the source tree plus everything in the USERINCLUDE set. Then use USERINCLUDE in building the x86 boot code. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
* kbuild: link of vmlinux moved to a scriptSam Ravnborg2012-05-051-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the final link of vmlinux to a script to improve readability and maintainability of the code. The Makefile fragments used to link vmlinux has over the years seen far too many changes and the logic had become hard to follow. As the process by nature is serialized there was nothing gained including this in the Makefile. "um" has special link requirments - and the only way to handle this was to hard-code the linking of "um" in the script. This was better than trying to modularize it only for the benefit of "um" anyway. The shell script has been improved after input from: Arnaud Lacombe <lacombar@gmail.com> Nick Bowler <nbowler@elliptictech.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Arnaud Lacombe <lacombar@gmail.com> Cc: Nick Bowler <nbowler@elliptictech.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Michal Marek <mmarek@suse.cz>
* um: Switch to large mcmodel on x86_64Richard Weinberger2012-03-251-0/+1
| | | | | | | | | | | | | | | | | x86_64 UML is unable to load modules if more than 504MiB of memory are used. This happens because on x86_64 the UML process has a quite high start address (typically around 0x6000000). If UML's memory is larger than 504MiB VMALLOC_START happens to be after 0x8000000. This is no problem unless one loads a module which was built with R_X86_64_32S relocations. Symbols with a location > 0x8000000 cannot be used with R_X86_64_32S To deal with this x86_64 UML has to be compiled with -mcmodel=large such that no R_X86_64_32S relocations are used. Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: 전하늘 <allskyee@gmail.com>
* um: most of the SUBARCH uses can be killedAl Viro2012-03-251-2/+2
| | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [richard@nod.at: Re-export SUBARCH in arch/um/Makefile] Signed-off-by: Richard Weinberger <richard@nod.at>
* um: Use $(srctree) not $(KBUILD_SRC)H. Peter Anvin2011-12-091-1/+1
| | | | | | | $(KBUILD_SRC) is not defined without O=, use $(srctree). Reported-and-tested-by: Richard Weinberger <richard@nod.at> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* um: Generate headers before generating user-offsets.sH. Peter Anvin2011-12-051-1/+1
| | | | | | | | In case we need generated header files for the values in user-offsets.h, make sure we build generated header files before user-offsets.s is built. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* um: Run host archheaders, allow use of host generated headersH. Peter Anvin2011-12-051-1/+6
| | | | | | | | | | | Run the "archheaders" target for the host architecture, for architectures (like x86, now) that want to generate some of the necessary header files. Add $(HOST_DIR)/include/generated to the include path so we then pick them up. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* um: take arch/um/sys-x86 to arch/x86/umAl Viro2011-11-021-9/+13
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: merge Makefile-{i386,x86_64}Al Viro2011-11-021-1/+11
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: merge arch/um/sys-{i386,x86_64}Al Viro2011-11-021-3/+3
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: merge arch/um/sys-{i386,x86_64}/sharedAl Viro2011-11-021-2/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: merge arch/um/sys-{i386,x86_64}/asmAl Viro2011-11-021-2/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: get rid of kern_constants.hAl Viro2011-11-021-10/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: take user_constants.h to include/generatedAl Viro2011-11-021-3/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: switch to -idirafter, get saner kern_constants.h out of thatAl Viro2011-11-021-2/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: fix strrchr() problemsAl Viro2011-09-141-1/+1
| | | | | | | | | | | | | | | | | | | richard@nod.at: Fixes: /usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex': (.text+0x0): multiple definition of `strrchr' If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may clash with the kernel implementation. This workaround comes originally from Jeff Dike: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kbuild: move asm-offsets.h to include/generatedSam Ravnborg2009-12-121-1/+1
| | | | | | | | | | | | | The simplest method was to add an extra asm-offsets.h file in arch/$ARCH/include/asm that references the generated file. We can now migrate the architectures one-by-one to reference the generated file direct - and when done we can delete the temporary arch/$ARCH/include/asm/asm-offsets.h file. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Marek <mmarek@suse.cz>
* arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0Sam Ravnborg2009-09-201-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Albin Tonnerre <albin.tonnerre@free-electrons.com> reported: Bash 4 filters out variables which contain a dot in them. This happends to be the case of CPPFLAGS_vmlinux.lds. This is rather unfortunate, as it now causes build failures when using SHELL=/bin/bash to compile, or when bash happens to be used by make (eg when it's /bin/sh) Remove the common definition of CPPFLAGS_vmlinux.lds by pushing relevant stuff to either Makefile.build or the arch specific kernel/Makefile where we build the linker script. This is also nice cleanup as we move the information out where it is used. Notes for the different architectures touched: arm - we use an already exported symbol cris - we use a config symbol aleady available [Not build tested] mips - the jiffies complexity has moved to vmlinux.lds.S where we need it. Added a few variables to CPPFLAGS - they are only used by the linker script. [Not build tested] powerpc - removed assignment that is not needed [not build tested] sparc - simplified it using $(BITS) um - introduced a few new exported variables to deal with this xtensa - added options to CPP invocation [not build tested] Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* get rid of the last symlink in uml buildAl Viro2009-01-051-14/+11
| | | | | | | | | | | | | We need to make asm-offsets.h contents visible for objects built with userland headers. Instead of creating a symlink, just have the file with equivalent include (relative to location of header) created once. That kills the last symlink used in arch/um builds. Additionally, both generated headers can become dependencies of archprepare now, killing the misuse of prepare. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86, um: get rid of uml-config.hAl Viro2008-10-221-15/+3
| | | | | | | Take a few symbols we need into kern_constants.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of arch/um/Kconfig.archAl Viro2008-10-221-6/+2
| | | | | | | | | | Teach scripts/kconfig/Makefile and top-level Makefile that arch/*/Makefile is allowed to say Kconfig := <whatever I want instead of arch/blah/Kconfig>. Rewrite arch/um/Kconfig and arch/um/Kconfig.<subarch> so that the latter would be top-level one (and include the pieces of the former). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of arch/um/os symlinkAl Viro2008-10-221-13/+2
| | | | | | | | we can get DEV_NULL defined for arch/um/drivers/null.c in less convoluted ways, TYVM... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of header symlinksAl Viro2008-10-221-19/+5
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: merge Kconfig.i386 and Kconfig.x86_64Al Viro2008-10-221-2/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of sysdep symlinkAl Viro2008-10-221-10/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: take vm-flags.h to sysdepAl Viro2008-10-221-2/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of uml asm/archAl Viro2008-10-221-11/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: get rid of system.h -> system.h includeAl Viro2008-10-221-1/+1
| | | | | | | | Long-term we want to split system.h and include barriers part from underlying target; for now copy that part to sysdep. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: untangle uml ldt.hAl Viro2008-10-221-1/+1
| | | | | | | | | * turn asm/ldt.h into ldt.h; update the (very few) users * take host_ldt.h into sysdep, kill symlink mess * includes of asm/arch/ldt.h turn into asm/ldt.h now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: sanitize uml sigcontext.h usesAl Viro2008-10-221-1/+1
| | | | | | | | | | | | a) the only difference between sigcontext and sysdep/sigcontext is that the former contains externs for two long-dead functions. Removed, switched the only user to sysdep/sigcontext b) asm/sigcontext.h is removable - that of underlying architecture would get used. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: now we can get rid of trivial uml headersAl Viro2008-10-221-0/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: ... and asm-x86 moveAl Viro2008-10-221-2/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: initial part of asm-um moveAl Viro2008-10-221-8/+9
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* x86, um: take arch/um/include/* out of the wayAl Viro2008-10-221-26/+25
| | | | | | | | | We can't just plop asm/* into it - userland helpers are built with it in search path and seeing asm/* show up there suddenly would be a bad idea. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* [UML] fix gcc ICEs and unresolved externsJeff Dike2008-07-071-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are various constraints on the use of unit-at-a-time: - i386 uses no-unit-at-a-time for pre-4.0 (not 4.3) - x86_64 uses unit-at-a-time always Uli reported a crash on x86_64 with gcc 4.1.2 with unit-at-a-time, resulting in commit c0a18111e571138747a98af18b3a2124df56a0d1 Ingo reported a gcc internal error with gcc 4.3 with no-unit-at-a-timem, resulting in 22eecde2f9034764a3fd095eecfa3adfb8ec9a98 Benny Halevy is seeing extern inlines not resolved with gcc 4.3 with no-unit-at-a-time This patch reintroduces unit-at-a-time for gcc >= 4.0, bringing back the possibility of Uli's crash. If that happens, we'll debug it. I started seeing both the internal compiler errors and unresolved inlines on Fedora 9. This patch fixes both problems, without so far reintroducing the crash reported by Uli. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Benny Halevy <bhalevy@panasas.com> Cc: Adrian Bunk <bunk@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "uml: fix gcc problem"Linus Torvalds2008-05-061-4/+1
| | | | | | | | | | | | | | | | This reverts commit 22eecde2f9034764a3fd095eecfa3adfb8ec9a98. Uli reports that it breaks UML on x86-64 with the Fedora 8 gcc (gcc 4.1.2), causing a crash on startup. See http://marc.info/?l=linux-kernel&m=121011722806093&w=2 for a trace. Reported-by: Ulrich Drepper <drepper@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: fix gcc problemIngo Molnar2008-05-041-1/+4
| | | | | | | | this is what caused gcc 4.3 to throw an internal error when OPTIMIZE_INLINING was enabled ... Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* uml: runtime host VMSPLIT detectionJeff Dike2008-02-081-11/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calculate TASK_SIZE at run-time by figuring out the host's VMSPLIT - this is needed on i386 if UML is to run on hosts with varying VMSPLITs without recompilation. TASK_SIZE is now defined in terms of a variable, task_size. This gets rid of an include of pgtable.h from processor.h, which can cause include loops. On i386, task_size is calculated early in boot by probing the address space in a binary search to figure out where the boundary between usable and non-usable memory is. This tries to make sure that a page that is considered to be in userspace is, or can be made, read-write. I'm concerned about a system-global VDSO page in kernel memory being hit and considered to be a userspace page. On x86_64, task_size is just the old value of CONFIG_TOP_ADDR. A bunch of config variable are gone now. CONFIG_TOP_ADDR is directly replaced by TASK_SIZE. NEST_LEVEL is gone since the relocation of the stubs makes it irrelevant. All the HOST_VMSPLIT stuff is gone. All references to these in arch/um/Makefile are also gone. I noticed and fixed a missing extern in os.h when adding os_get_task_size. Note: This has been revised to fix the 32-bit UML on 64-bit host bug that Miklos ran into. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: remove TOPDIRWANG Cong2008-02-051-2/+2
| | | | | | | | | | | TOPDIR is obsolete, use srctree instead. This patch removes TOPDIR from all UML Makefiles. Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: fx command-line CFLAGS and LDFLAGS supportJeff Dike2008-02-051-3/+3
| | | | | | | | | | | | | | | | | UML still needed some work in order to allow CFLAGS to be passed in from the command line. USER_CFLAGS is produced from KBUILD_CFLAGS in part by removing all the -I switches. This is so that kernel headers don't accidentally get pulled into libc files. However, a common use of command-line CFLAGS would be to add -I switches to the build. This patch specifically adds any command-line -I flags back to USER_CFLAGS. I also corrected the spelling of LFLAGS to LDFLAGS. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: allow LFLAGS on command lineJeff Dike2008-02-051-1/+3
| | | | | | | | Allow LFLAGS to be given to make and have the expected effect. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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