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2009-06-13kmemcheck: add the kmemcheck coreVegard Nossum
General description: kmemcheck is a patch to the linux kernel that detects use of uninitialized memory. It does this by trapping every read and write to memory that was allocated dynamically (e.g. using kmalloc()). If a memory address is read that has not previously been written to, a message is printed to the kernel log. Thanks to Andi Kleen for the set_memory_4k() solution. Andrew Morton suggested documenting the shadow member of struct page. Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> [export kmemcheck_mark_initialized] [build fix for setup_max_cpus] Signed-off-by: Ingo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
2009-06-10Merge branch 'x86-kbuild-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (46 commits) x86, boot: add new generated files to the appropriate .gitignore files x86, boot: correct the calculation of ZO_INIT_SIZE x86-64: align __PHYSICAL_START, remove __KERNEL_ALIGN x86, boot: correct sanity checks in boot/compressed/misc.c x86: add extension fields for bootloader type and version x86, defconfig: update kernel position parameters x86, defconfig: update to current, no material changes x86: make CONFIG_RELOCATABLE the default x86: default CONFIG_PHYSICAL_START and CONFIG_PHYSICAL_ALIGN to 16 MB x86: document new bzImage fields x86, boot: make kernel_alignment adjustable; new bzImage fields x86, boot: remove dead code from boot/compressed/head_*.S x86, boot: use LOAD_PHYSICAL_ADDR on 64 bits x86, boot: make symbols from the main vmlinux available x86, boot: determine compressed code offset at compile time x86, boot: use appropriate rep string for move and clear x86, boot: zero EFLAGS on 32 bits x86, boot: set up the decompression stack as early as possible x86, boot: straighten out ranges to copy/zero in compressed/head*.S x86, boot: stylistic cleanups for boot/compressed/head_64.S ... Fixed trivial conflict in arch/x86/configs/x86_64_defconfig manually
2009-04-17x86, kbuild: make "make install" not depend on vmlinuxH. Peter Anvin
It is common to use "make install" in restricted environments which differ from the one which was actually used to build the kernel. In such environments it is highly undesirable to trigger a rebuild of any part of the system. Worse, the rebuild may be spurious, triggered by differences in the environment. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <20090415234642.GA28531@uranus.ravnborg.org>
2009-04-16x86: standardize Kbuild rulesSam Ravnborg
Introducing this Kbuild file allow us to: make arch/x86/ And thus building all the core part of x86. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Jaswinder Singh Rajput <jaswinder@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-12x86: use targets in the boot Makefile instead of CLEAN_FILESH. Peter Anvin
Impact: cleanup Instead of using CLEAN_FILES in arch/x86/Makefile, add generated files to targets in arch/x86/boot/Makefile, so they will get naturally cleaned up by "make clean". Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-03-12x86: remove additional vestiges of the zImage/bzImage splitH. Peter Anvin
Impact: cleanup Remove targets that were used for zImage only, and Makefile infrastructure that was there to support the zImage/bzImage split. Reported-by: Paul Bolle <pebolle@tiscali.nl> LKML-Reference: <1236879901.24144.26.camel@test.thuisdomein> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-13Merge branch 'core/percpu' into x86/coreIngo Molnar
2009-02-10stackprotector: update make rulesTejun Heo
Impact: no default -fno-stack-protector if stackp is enabled, cleanup Stackprotector make rules had the following problems. * cc support test and warning are scattered across makefile and kernel/panic.c. * -fno-stack-protector was always added regardless of configuration. Update such that cc support test and warning are contained in makefile and -fno-stack-protector is added iff stackp is turned off. While at it, prepare for 32bit support. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-29x86: remove subarchitecture supportIngo Molnar
Remove the 32-bit subarchitecture support code. All subarchitectures but Voyager have been converted. Voyager will be done later or will be removed. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-29x86: remove subarchitecture support codeIngo Molnar
Remove remaining bits of the subarchitecture code. Now that all the special platforms are runtime probed and runtime handled, we can remove these facilities. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-31Merge branch 'linus' into stackprotectorIngo Molnar
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
2008-10-22x86, um: ... and asm-x86 moveAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-15Merge branch 'linus' into stackprotectorIngo Molnar
Conflicts: arch/x86/kernel/Makefile include/asm-x86/pda.h
2008-07-26x86, RDC321x: add to mach-defaultIngo Molnar
first step to add RDC321x support to the default PC architecture. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86, VisWS: turn into generic arch, remove leftover filesIngo Molnar
remove leftover arch/x86/mach-visws/* files. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86, VisWS: turn into generic arch, flip over VISWS to generic archIngo Molnar
this is the big move: flip over VISWS to generic arch support. From this commit on CONFIG_X86_VISWS is just another (default-disabled) option that turns on certain quirks - no other complications. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/mpparse' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/io_apic_32.c arch/x86/kernel/setup_64.c arch/x86/mm/init_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-10x86: make generic arch support NUMAQYinghai Lu
... so it could fall back to normal numa and we'd reduce the impact of the NUMAQ subarch. NUMAQ depends on GENERICARCH also decouple genericarch numa from acpi. also make it fall back to bigsmp if apicid > 8. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-05x86: extract common part of head32.c and head64.c into head.cHuang, Ying
This patch extracts the common part of head32.c and head64.c into head.c. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: andi@firstfloor.org Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-26stackprotector: turn not having the right gcc into a #warningArjan van de Ven
If the user selects the stack-protector config option, but does not have a gcc that has the right bits enabled (for example because it isn't build with a glibc that supports TLS, as is common for cross-compilers, but also because it may be too old), then the runtime test fails right now. This patch adds a warning message for this scenario. This warning accomplishes two goals 1) the user is informed that the security option he selective isn't available 2) the user is suggested to turn of the CONFIG option that won't work for him, and would make the runtime test fail anyway. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-12x86: minor polishing to top-level arch MakefileJan Beulich
Use build target when creating compatibility link, and use $(boot) where possible. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: add subarch support (for headers) to x86_64Glauber de Oliveira Costa
this patch allows x86_64 to use subarch mach_ headers in practice, since x86_64 does not have any subarch, it will use mach_default. But it will allow for substantially less code duplication Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: introduce kernel/head32.cEric W. Biederman
Copy x86_64 and add a head32.c so we can start moving early architecture initialization out of assembly. [ Sam Ravnborg <sam@ravnborg.org>: updated it to x86 ] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-19x86: fix vdso_install breaks user "make install"Sam Ravnborg
I suggest to make the vdso_install step independent as in following patch. This solves the issue at ahnd and still gives us the posibility to install the files should they be needed. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-09x86 PM: move 64-bit hibernation files to arch/x86/powerRafael J. Wysocki
Move arch/x86/kernel/suspend_64.c to arch/x86/power . Move arch/x86/kernel/suspend_asm_64.S to arch/x86/power as hibernate_asm_64.S . Update purpose and copyright information in arch/x86/power/suspend_64.c and arch/x86/power/hibernate_asm_64.S . Update the Makefiles in arch/x86, arch/x86/kernel and arch/x86/power to reflect the above changes. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04x86: define OBJCOPYFLAGS explicitly for each target.Ian Campbell
Do this rather than defining a global version and overriding it in almost all cases in order to make subsequent patches simpler. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-01fix directory entry in arch-x86-MakefileSteven Rostedt
Doing a make randconfig I came across this error in the Makefile. This patch makes a directory out of arch/x86/mach-default for CONFIG_X86_RDC321X Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-30KVM: Move arch dependent files to new directory arch/x86/kvm/Avi Kivity
This paves the way for multiple architecture support. Note that while ioapic.c could potentially be shared with ia64, it is also moved. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30x86: add support for the RDC R-321x SoCFlorian Fainelli
This patch adds support for the RDC R-321x system-on-chip, also known as R-861x-(G). It uses the generic GPIO API and has support for the on-chip hardware watchdog. Build-fix from: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: document fdimage/isoimage completely in make helpAndi Kleen
Add missing targets and missing options in x86 make help [ mingo@elte.hu: more whitespace cleanups ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: biarch support for 32 bit builds beautifiedSam Ravnborg
There were no reason to mess around with CC, AS and LD. Fixing this up avoided duplicated option for ld. A small fixlet were needed in boot/Makefile which assumed that CC were modified. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: share more options between 32 and 64 bit buildSam Ravnborg
On recommendation from Andi Kleen share a few more options between 32 and 64 bit builds. A defconfig build for i386 did not show any difference in size of text and data. The additional shared options are: -Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unification of arch/x86/MakefilesSam Ravnborg
Unify the 32 and 64 bit specific Makefiles. The unification was simplest to do in one step although the readability of the patch suffers a bit from this. Noteworthy remarks on the unification: - The 64 bit cpu stuff should be moved to Makefile_32.cpu but I did not feel confident doing it due to subtle differences - The use of cflags-y were abandoned since we have seen one bug where we did wrong due to missing assignment to KBUILD_CFLAGS. The cc-option marcro uses KBUILD_CFLAGS. - The "No need to remake" line are deleted. It caused "make -B" to fail - For 64 bit the sub architecture stuff is not used. - The way head64.o is specified could be nicer - but it awaits the introduction of head32.o (which seems like a win to introduce for readability) - Patch is checkpatch clean Patch is tested by doing a defconfig build for i386 and x86_64 and in both cases monitoring that only relevant files were recompiled when applying the patch. [ mingo@elte.hu: build fix ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-11-26x86: correctly set UTS_MACHINE for "make ARCH=x86"Andreas Herrmann
For a kernel built with "make ARCH=x86" the following system information is displayed when running the new kernel $ uname -m x86 On some i386 systems (e.g. K7) we even have the following information $ uname -m x66 This is weird. The usual information for "uname -m" should be "x86_64" on 64-bit and "i386" or "i686" on 32-bit. This patch fixes the issue by setting UTS_MACHINE to "i386" for 32-bit kernel builds and to "x86_64" for 64-bit kernel builds. I.e., "x86" won't be used for UTS_MACHINE anymore. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andreas Herrmann <aherrman@arcor.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-12x86: do not use $(ARCH) when not neededSam Ravnborg
For x86 ARCH may say i386 or x86_64 and soon x86. Rely on CONFIG_X64_32 to select between 32/64 or just hardcode the value as appropriate. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com>
2007-10-25x86: move defconfig files for i386 and x86_64 to x86Sam Ravnborg
With some small changes to kconfig makefile we can now locate the defconfig files for i386 and x86_64 in the configs/ subdirectory under x86. make ARCH=i386 defconfig and make defconfig works as expected also after this change. But arch maintainers shall now update a defconfig file in the configs/ directory. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-25x86: move i386 and x86_64 Makefiles to arch/x86Sam Ravnborg
Moving the ARCH specific Makefiles for i386 and x86_64 required a litle bit tweaking in the top-lvel Makefile. SRCARCH is now set in the top-level Makefile because we need this info to include the correct arch Makefile. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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