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| * [IA64] Fix the order of atomic operations in restore_previous_kprobes on ia64Masami Hiramatsu2008-02-041-3/+4
| | | | | | | | | | | | | | | | | | Fix the order of atomic operations to prevent overwriting prev_kprobe[0]. To pop values from stack, we must decrement stack index right AFTER reading values. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] constify function pointer tablesJan Engelhardt2008-02-045-5/+5
| | | | | | | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2008-02-0512-46/+108
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] dcss: Initialize workqueue before using it. [S390] Remove BUILD_BUG_ON() in vmem code. [S390] sclp_tty/sclp_vt220: Fix scheduling while atomic [S390] dasd: fix panic caused by alias device offline [S390] dasd: add ifcc handling [S390] latencytop s390 support. [S390] Implement ext2_find_next_bit. [S390] Cleanup & optimize bitops. [S390] Define GENERIC_LOCKBREAK. [S390] console: allow vt220 console to be the only console [S390] Fix couple of section mismatches. [S390] Fix smp_call_function_mask semantics. [S390] Fix linker script. [S390] DEBUG_PAGEALLOC support for s390. [S390] cio: Add shutdown callback for ccwgroup. [S390] cio: Update documentation. [S390] cio: Clean up chsc response code handling. [S390] cio: make sense id procedure work with partial hardware response
| * | [S390] Remove BUILD_BUG_ON() in vmem code.Heiko Carstens2008-02-052-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove BUILD_BUG_ON() in vmem code since it causes build failures if the size of struct page increases. Instead calculate at compile time the address of the highest physical address that can be added to the 1:1 mapping. This supposed to fix a build failure with the page owner tracking leak detector patches as reported by akpm. page-owner-tracking-leak-detector-broken-on-s390.patch can be removed from -mm again when this is merged. Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] latencytop s390 support.Heiko Carstens2008-02-052-8/+26
| | | | | | | | | | | | | | | | | | Cc: Holger Wolf <wolf@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] Define GENERIC_LOCKBREAK.Martin Schwidefsky2008-02-051-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix compile error: CC arch/s390/kernel/asm-offsets.s In file included from arch/s390/kernel/asm-offsets.c:7: include/linux/sched.h: In function 'spin_needbreak': include/linux/sched.h:1931: error: implicit declaration of function '__raw_spin_is_contended' make[2]: *** [arch/s390/kernel/asm-offsets.s] Error 1 Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] console: allow vt220 console to be the only consolePeter Oberparleiter2008-02-051-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | Fix console detection logic to support configurations in which the vt220 console is the only available Linux console. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] Fix couple of section mismatches.Heiko Carstens2008-02-056-24/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fix couple of section mismatches. And since we touch the code anyway change the IPL code to use C99 initializers. Cc: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] Fix smp_call_function_mask semantics.Heiko Carstens2008-02-051-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | Make sure func isn't called on the local cpu just like on all other architectures that implement this function. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] Fix linker script.Heiko Carstens2008-02-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Fixes this warning: vmlinux: warning: allocated section `.text' not in segment Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] DEBUG_PAGEALLOC support for s390.Heiko Carstens2008-02-053-1/+39
| | | | | | | | | | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-02-051-3/+3
|\ \ \ | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64] pci_sun4v.c: Section fixes.
| * | | [SPARC64] pci_sun4v.c: Section fixes.Adrian Bunk2008-02-051-3/+3
| |/ / | | | | | | | | | | | | | | | | | | | | | WARNING: vmlinux.o(.text+0x39be4): Section mismatch in reference from the function probe_existing_entries() to the function .init.text:page_in_phys_avail() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'agp-patches' of ↵Linus Torvalds2008-02-051-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 * 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6: agp: remove flush_agp_mappings calls from new flush handling code intel-agp: introduce IS_I915 and do some cleanups.. [intel_agp] fix name for G35 chipset intel-agp: fixup resource handling in flush code. intel-agp: add new chipset ID agp: remove unnecessary pci_dev_put agp: remove uid comparison as security check fix AGP warning agp/intel: Add chipset flushing support for i8xx chipsets. intel-agp: add chipset flushing support agp: add chipset flushing support to AGP interface
| * | | intel-agp: add chipset flushing supportDave Airlie2008-02-051-1/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for flushing the chipsets on the 915, 945, 965 and G33 families of Intel chips. The BIOS doesn't seem to always allocate the BAR on the 965 chipsets so I have to use pci resource code to create a resource It adds an export for pcibios_align_resource.
* | | uml: make mconsole_stack namespace-awareJeff Dike2008-02-051-17/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | Also fixed the include syntax while I was there. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | uml: redo the calculation of NR_syscallsJeff Dike2008-02-056-19/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Redo the calculation of NR_syscalls since that disappeared from i386 and use a similar mechanism on x86_64. We now figure out the size of the system call table in arch code and stick that in syscall_table_size. arch/um/kernel/skas/syscall.c defines NR_syscalls in terms of that since its the only thing that needs to know how many system calls there are. The old mechananism that was used on x86_64 is gone. arch/um/include/sysdep-i386/syscalls.h got some formatting since I was looking at it. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | uml: defconfig tweaksJeff Dike2008-02-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tweak the UML defconfig - we probably don't need 256 old-style ptys - this slows down udev noticably enable hostfs disable slab debugging - another noticable performance hit 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: port mutex conversionDaniel Walker2008-02-051-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The port_sem is already used as a mutex since it's using DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This patch switches it over to a struct mutex. Signed-off-by: Daniel Walker <dwalker@mvista.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: mconsole mutex conversionDaniel Walker2008-02-051-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The plug_mem_mutex is already used as a mutex since it's using DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This patch switches it over to a struct mutex. Signed-off-by: Daniel Walker <dwalker@mvista.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: LDT mutex conversionDaniel Walker2008-02-051-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ldt.semaphore conforms to the new struct mutex requirments, so I converted it to use the new API and changed the name. Signed-off-by: Daniel Walker <dwalker@mvista.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: use of a public MAC is a warning, not an errorJeff Dike2008-02-051-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Downgrade one of the MAC validity checks. If it's one that could be possibly assigned to a physical NIC, then nothing will break. So, emit a warning in this case, but keep the requested MAC. 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: fix infinite mconsole loopKarol Swietlicki2008-02-051-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch takes care of a problem with the stopping code. The function inside the while condition returns 0 to signify a problem. A problem could be for example a bad command or a bad version of the mconsole client. A bad command would terminate the stopping loop and resume the kernel. This is a problem. A better solution is to make the loop infinite and don't leave it until we are explicitly told to. Signed-off-by: Karol Swietlicki <magotari@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: remove map_cbJeff Dike2008-02-051-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | John Reiser noticed that a physical memory region was being mapped twice. This patch fixes that, and it inlines the responsible function, as that had only one caller. Cc: John Reiser <jreiser@BitWagon.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: remove TOPDIRWANG Cong2008-02-052-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: remove unused fields from mm_contextJeff Dike2008-02-051-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | The 3-level page table fixes forgot to remove a couple now-unused fields from struct mm_context. 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: move register initializationJeff Dike2008-02-051-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling init_registers inside the skas3 checking causes mysterious crashes if it doesn't happen because the skas3 checking is bypassed. This patch moves it to os_early_checks. 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: add newlines to printksJeff Dike2008-02-051-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | Some printks were missing newlines. 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: style fixes in arch/um/sys-x86_64Jeff Dike2008-02-058-106/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Style fixes in arch/um/sys-x86_64: updated copyrights CodingStyle fixes added severities to printks which needed them A bunch of functions in sys-*/ptrace_user.c turn out to be unused, so they and their declarations are gone. 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: add back CONFIG_HZJeff Dike2008-02-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | avoid-overflows-in-kernel-timec.patch makes CONFIG_HZ necessary for a successful build. UML lacks a definition, so this patch adds one. It also changes the hard-wired definition of HZ to CONFIG_HZ. Note: this patch is a good idea even in the absence of hpa's time fixes. Cc: "H. Peter Anvin" <hpa@zytor.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: DEBUG_SHIRQ fixesJeff Dike2008-02-052-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A couple more DEBUG_SHIRQ fixes. The previous mconsole blocking fix exposed the lack of O_NONBLOCK on the mconsole socket. Also, winch_interrupt started crashing because it is called at irq free time and it tries to dereference tty->driver_data, which has already been set to NULL. I added some error cleanup in mconsole_init while I was there. Cc: "Karol Swietlicki" <magotari@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: remove fakehdJeff Dike2008-02-051-16/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | The fakehd switch lost its implementation at some point. Since no one is screaming for it, we might as well remove it. 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: implement O_APPENDJeff Dike2008-02-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | The .a flags in openflags never had an implementation. 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: SMP locking commentaryJeff Dike2008-02-054-10/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add some more commentary about various pieces of global data not needing locking. Also got rid of unmap_physmem since that is no longer used. 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: remove init_irq_signalsJeff Dike2008-02-053-13/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | init_irq_signals doesn't need to be called from the context of a new process. It initializes handlers, which are useless in process context. With that call gone, init_irq_signals has only one caller, so it can be inlined into init_new_thread_signals. 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: signal handling tidyingJeff Dike2008-02-051-21/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch tidies the signal handling code slightly. pending is renamed to signals_pending for symmetry with signals_enabled. remove_sigstack was unused, so can be deleted. The value of change_sig was never used, so it is now void and the return value is not calculated any more. 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: style fixes in arch/um/kernelJeff Dike2008-02-0514-133/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Joe Perches noticed some printks in smp.c that needed fixing. While I was in there, I did the usual tidying in arch/um/kernel, which should be fairly style-clean at this point: copyright updates emacs formatting comments removal include tidying style fixes Cc: Joe Perches <joe@perches.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: clean up sig_handler_common_skasJeff Dike2008-02-051-45/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sig_handler_common_skas needs significant modernization, starting with its name and storage class. There is no need to hide the true type of the sigcontext pointer, so the void * dummy parameter can be replaced with a sigcontext *sc. The array of uml_pt_regs structs used in the page fault case are gone, replaced by a local variable. This is also used in the non-segfault case instead of the copy in the task_struct. Since it's local, the special handling of the is_user flag can go away. There hasn't been any special treatment of SIGUSR1 in ages, so the line that enables it can be deleted. The special treatment of SIGSEGV similarly goes away, but to compensate, SA_NODEFER is added to sa_mask when registering a signal handler. 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: move sig_handler_common_skasJeff Dike2008-02-054-79/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves sig_handler_common_skas from arch/um/os-Linux/skas/trap.c to its only caller in arch/um/os-Linux/signal.c. trap.c is now empty, so it can be removed. This is code movement only - the significant cleanup needed here is done in the next patch. 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: don't allow processes to call into stubJeff Dike2008-02-051-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kill a process that tries to branch into a stub and execute a system call. There are no security implications here - a system call in a stub is treated the same as a system call anywhere else. But if a process is trying to branch into a stub, either it is trying something nasty or it has gone haywire, so it's a good idea to get rid of it in either case. 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: get rid of syscall countersJeff Dike2008-02-053-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | Get rid of some syscall counters which haven't been useful in ages. 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: don't kill pid 0Jeff Dike2008-02-051-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A bit of defensive programming - during development, it ocassionally happens that a call to init_new_context is missed, resulting in context holding a host pid of zero. When that address space is torn down, destroy_context does a kill(0), which instantly kills the whole UML without any errors whatsoever. This patch add a check for pids less than 2, to also catch 1 and negative pids. 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: tidy helper codeJeff Dike2008-02-057-50/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Style fixes to arch/um/os/helper.c and tidying up the breakpoint fix a bit. helper.c gets all the usual style fixes - updated copyright all printks get severities Also - errval changes to err in helper_child fixed an obsolete comment run_helper was killing a child process which is guaranteed to be dead or dying anyway Removed the nohang and pname arguments from helper_wait and fixed the declaration and callers. nohang was used only in the slirp driver and I don't think it was needed. I think pname was a bit of overkill in putting out an error message when something goes wrong. 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: use barrier() instead of mb()Jeff Dike2008-02-051-20/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | signals_enabled and pending have requirements on the order in which they are modified. This used to be done by declaring them volatile and putting an mb() where the ordering requirements were in effect. After getting a better (I hope) understanding of how to do this correctly, the volatile declarations are gone and the mb()'s replaced by barrier()'s. One of the mb()'s was deleted because I see no problematic writes that could be re-ordered past that point. 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: install panic notifier earlierJeff Dike2008-02-054-32/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that if there's a panic early enough, UML will just sit there in the LED-blinking loop because the panic notifier hadn't been installed yet. This patch installs it earlier. It also fixes the problem which exposed the hang, namely that if you give UML a zero-sized initrd, it will ask alloc_bootmem for zero bytes, and that will cause the panic. While I was in initrd.c, I gave it a style makeover. Prompted by checkpatch, I moved a couple extern declarations of uml_exitcode to kern_util.h. 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: eliminate setjmp_wrapperJeff Dike2008-02-053-62/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setjmp_wrapper existed to provide setjmp to kernel code when UML used libc's setjmp and longjmp. Now that UML has its own implementation, this isn't needed and kernel code can invoke setjmp directly. do_buffer_op is massively cleaned up since it is no longer a callback from setjmp_wrapper and given a va_list from which it must extract its arguments. The actual setjmp is moved from buffer_op to do_op_one_page because the copy operation is inside an atomic section (kmap_atomic to kunmap_atomic) and it shouldn't be longjmp-ed out of. 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: customize tlb.hJeff Dike2008-02-051-7/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Customize the hooks in tlb.h to optimize TLB flushing some more. Add start and end fields to tlb_gather_mmu, which are used to limit the address space range scanned when a region is unmapped. The interfaces which just free page tables, without actually changing mappings, don't need to cause a TLB flush. 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: 64-bit tlb fixesJeff Dike2008-02-051-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some 64-bit tlb fixes - moved pmd_page_vaddr to pgtable.h since it's the same for both 2-level and 3-level page tables fixed a bogus cast on pud_page_vaddr made the address checking in update_*_range more careful 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: style fixes in file.cJeff Dike2008-02-052-115/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/um/os-Linux/file.c needed some style work - updated the copyright cleaned up the includes CodingStyle fixes added some missing CATCH_EINTRs os_set_owner was unused, so it is gone all printks now have severities fcntl(F_GETFL) was being called without checking the return removed an obsolete comment 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: miscellaneous code cleanupsJeff Dike2008-02-057-40/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code tidying - the pid field of struct irq_fd isn't used, so it is removed os_set_fd_async needed to read flags before changing them, it doesn't need a pid passed in because it can call getpid itself, and a block of unused code needed deleting os_get_exec_close was unused, so it is removed ptrace_child called _exit for historical reasons which are no longer valid, so just calls exit instead 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>
generated by cgit v1.1 at 2024-09-21 00:37:56 +0000