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| * um: Serve io_remap_pfn_range()Richard Weinberger2012-03-251-0/+2
| | | | | | | | | | | | | | At some places io_remap_pfn_range() is needed. UML has to serve it like all other archs do. Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: a bunch of headers can be killed by using generic-yAl Viro2012-03-257-124/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: ptrace-generic.h doesn't need user.hAl Viro2012-03-251-1/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: remove pointless include of asm/fixmap.h from asm/pgtable.hAl Viro2012-03-251-2/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: asm-offsets.h might as well come from underlying arch...Al Viro2012-03-251-1/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: auxvec.h is never usedAl Viro2012-03-251-4/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* | um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() ↵Al Viro2012-03-201-2/+9
| | | | | | | | | | | | | | | | doesn't hold it ... while calling uml_dup_mmap() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | um: embed ->stub_pages[] into mmu_contextAl Viro2012-03-201-1/+1
|/ | | | | | seriously, kmalloc() for two-element array of pointers? Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* freezer: remove now unused TIF_FREEZETejun Heo2011-11-211-2/+0
| | | | | | Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-arch@vger.kernel.org
* um: kill system-um.hAl Viro2011-11-022-46/+37
| | | | | | | most of it belonged in irqflags.h, actually Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: generic ftrace.h will do...Al Viro2011-11-022-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: segment.h is x86-only and needed only thereAl Viro2011-11-021-10/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: asm/pda.h is not needed anymoreAl Viro2011-11-021-21/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: hw_irq.h can go generic as wellAl Viro2011-11-022-8/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: switch to generic-yAl Viro2011-11-0213-59/+2
| | | | | | | kill wrapper headers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: page_offset.h is never usedAl Viro2011-11-021-1/+0
| | | | | | | ... and neither is the only define in it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: irq_vectors.h just shadows x86 oneAl Viro2011-11-021-10/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: required-features.h is there only to shadow x86 one...Al Viro2011-11-021-9/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: asm/apic.h is there only to shadow the x86 one...Al Viro2011-11-021-4/+0
| | | | | | | ... so take it to arch/um/x86/asm. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: take ldt.h to arch/x86/um/asm/mm_context.hAl Viro2011-11-021-2/+2
| | | | | | | | | | | | | | | it's x86-only and we have no business playing with it in asm/mmu.h; make the latter have struct uml_arch_mm_context arch; instead of struct uml_ldt ldt; and let arch/<subarch>/um/asm/mm_context.h decide what'll be in there. While we are at it, kill host_ldt.h - it's not needed in part of places that include it (we want asm/ldt.h in those) and it can be trivially expanded into the single remaining one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: move asm/desc.h into arch/x86/um/asmAl Viro2011-11-021-16/+0
| | | | | | | its only purpose is to shadow the x86 asm/desc.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: take um_mmu.h to asm/mmu.h, clean asm/mmu_context.h a bitAl Viro2011-11-022-10/+19
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: kill um_uaccess.hAl Viro2011-11-021-5/+84
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: bury unused macros around ptrace.hAl Viro2011-11-021-4/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: arch_hweight.h is needed only on uml-x86Al Viro2011-11-021-6/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: take system.h out of shared/sysdepAl Viro2011-11-021-2/+0
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: Get rid of UPT_SET/UPT_REG macrosAl Viro2011-11-021-3/+0
| | | | | | | | the only users are arch getreg()/putreg() and it's easier to handle it there instead of playing with macros from hell Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: take vm-flags.h to sys-*/asmAl Viro2011-11-021-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: get rid of sysdep/checksum.hAl Viro2011-11-021-6/+0
| | | | | | | Move those to sys-.../asm/checksum.h, kill include/asm/checksum.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
* um: clean arch_ptrace() up a bitAl Viro2011-09-141-4/+0
| | | | | | | | | | 1) take subarch-specific stuff to subarch_ptrace() 2) PTRACE_{PEEK,POKE}{TEXT,DATA} is handled by ptrace_request() just fine... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ptrace: unify show_regs() prototypeMike Frysinger2011-07-261-2/+0
| | | | | | | | | [ poleg@redhat.com: no need to declare show_regs() in ptrace.h, sched.h does this ] Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um: clean up delay functionsRichard Weinberger2011-07-251-6/+4
| | | | | | | | | Both sys-i386 and sys-x86_64 support now ndelay(). The delay functions are based on arch/x86/lib/delay.c. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um: add asm/percpu.hRichard Weinberger2011-06-271-0/+6
| | | | | | | | | To make SLUB work on UML we need this_cpu_cmpxchg from asm-generic/percpu.h. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Remove unused PROC_CHANGE_PENALTY constantStephen Boyd2011-05-251-1/+0
| | | | | | | | | | | | | | | | This constant hasn't been used since before the git era (2.6.12) and thus can be dropped. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Richard Weinberger <richard@nod.at> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um: include linux/prefetch.hRichard Weinberger2011-05-251-0/+2
| | | | | | | | Fix build failures on UML. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um: mmu_gather reworkPeter Zijlstra2011-05-251-18/+11
| | | | | | | | | | | | | | | | | | | | | | Fix up the um mmu_gather code to conform to the new API. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Miller <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Tony Luck <tony.luck@intel.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.40' of ↵Linus Torvalds2011-05-241-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Unify input section names percpu: Avoid extra NOP in percpu_cmpxchg16b_double percpu: Cast away printk format warning percpu: Always align percpu output section to PAGE_SIZE Fix up fairly trivial conflict in arch/x86/include/asm/percpu.h as per Tejun
| * percpu: Always align percpu output section to PAGE_SIZETejun Heo2011-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Percpu allocator honors alignment request upto PAGE_SIZE and both the percpu addresses in the percpu address space and the translated kernel addresses should be aligned accordingly. The calculation of the former depends on the alignment of percpu output section in the kernel image. The linker script macros PERCPU_VADDR() and PERCPU() are used to define this output section and the latter takes @align parameter. Several architectures are using @align smaller than PAGE_SIZE breaking percpu memory alignment. This patch removes @align parameter from PERCPU(), renames it to PERCPU_SECTION() and makes it always align to PAGE_SIZE. While at it, add PCPU_SETUP_BUG_ON() checks such that alignment problems are reliably detected and remove percpu alignment comment recently added in workqueue.c as the condition would trigger BUG way before reaching there. For um, this patch raises the alignment of percpu area. As the area is in .init, there shouldn't be any noticeable difference. This problem was discovered by David Howells while debugging boot failure on mn10300. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: user-mode-linux-devel@lists.sourceforge.net
* | um: adjust current_thread_info() for newer gcc versionsRichard Weinberger2011-04-281-1/+4
| | | | | | | | | | | | | | | | | | | | | | In some cases gcc >= 4.5.2 will optimize away current_thread_info(). To prevent gcc from doing so the stack address has to be obtained via inline asm. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | um: fix call tracer and bug handlerRichard Weinberger2011-04-141-0/+6
|/ | | | | | | | | | | | | | | | Commit 1de1502c ("x86, um: now we can get rid of trivial uml headers") removed accidentally bug.h which broke UML's call tracer and bug handler. Without asm-generic/bug.h UML uses BUG() from arch/x86/ which makes use of ud2. UML cannot use ud2, it raises SIGILL in user mode. As UML has a different stack for handling signals the call trace will be cut off. Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: Sergei Trofimovich <slyich@gmail.com> Tested-by: Sergei Trofimovich <slyich@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: NUMA aware alloc_task_struct_node()Eric Dumazet2011-03-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All kthreads being created from a single helper task, they all use memory from a single node for their kernel stack and task struct. This patch suite creates kthread_create_on_cpu(), adding a 'cpu' parameter to parameters already used by kthread_create(). This parameter serves in allocating memory for the new kthread on its memory node if available. Users of this new function are : ksoftirqd, kworker, migration, pktgend... This patch: Add a node parameter to alloc_task_struct(), and change its name to alloc_task_struct_node() This change is needed to allow NUMA aware kthread_create_on_cpu() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Reviewed-by: Andi Kleen <ak@linux.intel.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Tejun Heo <tj@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* percpu: align percpu readmostly subsection to cachelineTejun Heo2011-01-251-1/+1
| | | | | | | | | | | | | | | Currently percpu readmostly subsection may share cachelines with other percpu subsections which may result in unnecessary cacheline bounce and performance degradation. This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR() linker macros, makes each arch linker scripts specify its cacheline size and use it to align percpu subsections. This is based on Shaohua's x86 only patch. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shaohua.li@intel.com>
* um: fix ptrace build errorRichard Weinberger2010-11-121-2/+2
| | | | | | | | | | | | | | | | | | | Both commits 0a3d763f1a68 ("ptrace: cleanup arch_ptrace() on um") and 9b05a69e0534 ("ptrace: change signature of arch_ptrace()") broke the um build. This patch fixes the issues. 0a3d763f1a68 introduced the undeclared variable "datavp". The patch seems completely untested. :-( 9b05a69e0534 changed arch_ptrace()'s signature but did not update um/include/asm/ptrace-generic.h. Signed-off-by: Richard Weinberger <richard@nod.at> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Tested-by: Will Newton <will.newton@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: define CONFIG_NO_DMAFUJITA Tomonori2010-10-261-112/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I think that it's better to detect DMA misuse at build time rather than calling BUG_ON. Architectures that can't do DMA need to define CONFIG_NO_DMA. Thanks to Sam Ravnborg for explaining how CONFIG_NO_DMA and CONFIG_HAS_DMA work: http://marc.info/?l=linux-kernel&m=128359913825550&w=2 HAS_DMA is defined like this: config HAS_DMA boolean depends on !NO_DMA default y So to set HAS_DMA to true an arch should do: 1) Do not define NO_DMA 2) Define NO_DMA abd set it to 'n' Must archs - including um - used principle 1). In the um case we want to say that we do NOT have any DMA. This can be done in two ways. a) define NO_DMA and set it to 'y' b) redefine HAS_DMA and set it to 'n'. The patch you provided used principle b) where other archs use principle a). So I suggest you should use principle a) for um too. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Jeff Dike <jdike@addtoit.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: remove pte_*map_nested()Peter Zijlstra2010-10-261-2/+0
| | | | | | | | | | | | | | | | | | | | | | Since we no longer need to provide KM_type, the whole pte_*map_nested() API is now redundant, remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um: fix IRQ flag handling namingRichard Weinberger2010-10-261-17/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | Commit df9ee292 ("Fix IRQ flag handling naming") changed the IRQ flag handling naming scheme and broke UML: In file included from arch/um/include/asm/fixmap.h:5, from arch/um/include/shared/um_uaccess.h:10, from arch/um/include/asm/uaccess.h:41, from arch/um/include/asm/thread_info.h:13, from include/linux/thread_info.h:56, from include/linux/preempt.h:9, from include/linux/spinlock.h:50, from include/linux/seqlock.h:29, from include/linux/time.h:8, from include/linux/stat.h:60, from include/linux/module.h:10, from init/main.c:13: arch/um/include/asm/system.h:11:1: warning: "local_save_flags" redefined This patch brings the new scheme to UML and makes it work again. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* uml: fix compile error in dma_get_cache_alignment()Miklos Szeredi2010-08-201-7/+0
| | | | | | | | | | | | | | | | Fix uml compile error: include/linux/dma-mapping.h:145: error: redefinition of 'dma_get_cache_alignment' arch/um/include/asm/dma-mapping.h:99: note: previous definition of 'dma_get_cache_alignment' was here Introduced by commit 4565f0170dfc ("dma-mapping: unify dma_get_cache_alignment implementations") Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Jeff Dike <jdike@addtoit.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dma-mapping: remove dma_is_consistent APIFUJITA Tomonori2010-08-111-1/+0
| | | | | | | | | | | | | | | | | | | | | Architectures implement dma_is_consistent() in different ways (some misinterpret the definition of API in DMA-API.txt). So it hasn't been so useful for drivers. We have only one user of the API in tree. Unlikely out-of-tree drivers use the API. Even if we fix dma_is_consistent() in some architectures, it doesn't look useful at all. It was invented long ago for some old systems that can't allocate coherent memory at all. It's better to export only APIs that are definitely necessary for drivers. Let's remove this API. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* um, x86: Cast to (u64 *) inside set_64bit()H. Peter Anvin2010-08-031-2/+2
| | | | | | | | | | | | After tightening up the types passed to set_64bit(), the cast to (phys_t *) triggers a warning apparently because phys_t is defined as "unsigned long" when building on 64 bits; however, u64 is defined as "unsigned long long". This is, however, a explicit cast inside a size-specific call, so just make the cast explicitly (u64 *). Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Jeff Dike <jdike@addtoit.com> LKML-Reference: <tip-69309a05907546fb686b251d4ab041c26afe1e1d@git.kernel.org>
* um, hweight: Fix UML boot crash due to x86 optimized hweightBorislav Petkov2010-06-101-0/+6
| | | | | | | | | | | | | | | Apparently UML cannot stomach callee reg-saving trickery introduced with d61931d89be506372d01a90d1755f6d0a9fafe2d (x86: Add optimized popcnt variants) and oopses during boot: http://marc.info/?l=linux-kernel&m=127522065202435&w=2 Redirect arch_hweight.h include from the x86 portion to the generic arch_hweight.h which is a fallback to the software hweight routines. LKML-Reference: <201005271944.09541.toralf.foerster@gmx.de> Signed-off-by: Borislav Petkov <bp@alien8.de> LKML-Reference: <4C0F4B00.4090307@panasas.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-25 22:02:14 +0000