- 10 Jul, 2006 40 commits
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Lennert Buytenhek authored
Newer ARMs have a 40 bit physical address space, but mapping physical memory above 4G needs a special page table format which we (currently?) do not use for userspace mappings, so what happens instead is that mapping an address >= 4G will happily discard the upper bits and wrap. There is a valid_mmap_phys_addr_range() arch hook where we could check for >= 4G addresses and deny the mapping, but this hook takes an unsigned long address: static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size); And drivers/char/mem.c:mmap_mem() calls it like this: static int mmap_mem(struct file * file, struct vm_area_struct * vma) { size_t size = vma->vm_end - vma->vm_start; if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size)) So that's not much help either. This patch makes the hook take a pfn instead of a phys address. Signed-off-by:Lennert Buytenhek <buytenh@wantstofly.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Doug Thompson authored
When EDAC was first introduced into the kernel it had a sysfs interface, but due to some problems it was disabled in 2.6.16 and remained disabled in 2.6.17. With feedback, several of the control and attribute files of that interface had some good constructive feedback. PCI Blacklist/Whitelist was a major set which has design issues and it has been removed in this patch. Instead of storing PCI broken parity status in EDAC, it has been moved to the pci_dev structure itself by a previous PCI patch. A future patch will enable that feature in EDAC by utilizing the pci_dev info. The sysfs is now enabled in this patch, with a minimal set of control and attribute files for examining EDAC state and for enabling/disabling the memory and PCI operations. The Documentation for EDAC has also been updated to reflect the new state of EDAC operation. Signed-off-by:
Doug Thompson <norsk5@xmisson.com> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Dave Jones authored
Whoops, better hope this never gets passed a null dev in its current state. Signed-off-by:
Dave Jones <davej@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Dave Jones authored
Signed-off-by:
Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Serge E. Hallyn authored
Two variables in drivers/s390/net/qeth_main.c:qeth_send_packet() are only used if CONFIG_QETH_PERF_STATS. Move their definition under the same ifdef to remove compiler warning. Signed-off-by:
Serge Hallyn <serue@us.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Jeff Dike authored
Handling a host mconsole version request must be done in a process context rather than interrupt context now that utsname information can be process-specific rather than global. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Jeff Dike authored
The dedevfsification of UML left an unused variable behind. Signed-off-by:
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Jeff Dike authored
Add some more uses of the CATCH_EINTR wrapper. Signed-off-by:
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Jeff Dike authored
Fix a bunch of formatting problems. Signed-off-by:
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Jeff Dike authored
Move most *_kern.c files in arch/um/kernel to *.c. This makes UML somewhat more closely resemble the other arches. [akpm@osdl.org: use the new INTF_* flags] Signed-off-by:
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Jeff Dike authored
Eliminate an unused debug option. Signed-off-by:
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Jeff Dike authored
A few sigio-related things can be made static. Signed-off-by:
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Jeff Dike authored
This fixes an exitcall ordering bug - calls to ignore_sigio_fd can come from exitcalls that come after the sigio thread has been killed. This would cause shutdown to hang or crash. Fixed by having ignore_sigio_fd check that the thread is present before trying to communicate with it. Signed-off-by:
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Jeff Dike authored
os_isatty can be made to disappear by moving maybe_sigio_broken from kernel to user code. This also lets write_sigio_workaround become static. Signed-off-by:
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Jeff Dike authored
The irq_spinlock is not needed from user code any more, so the irq_lock and irq_unlock wrappers can go away. This also changes the name of the lock to irq_lock. Signed-off-by:
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Jeff Dike authored
Mark forward_interrupts as being tt-mode only. Signed-off-by:
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Jeff Dike authored
uml_idle_timer is tt-mode only, so ifdef it as such to make it easier to spot when tt mode is killed. Signed-off-by:
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Jeff Dike authored
Get rid of a user of timer_irq_inited (and first_tick) by observing that prev_ticks can be used to decide if this is the first call. Signed-off-by:
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Jeff Dike authored
It turns out that init_new_thread_signals is always called with altstack == 1, so we can eliminate the parameter. Signed-off-by:
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Jeff Dike authored
wall_to_monotonic isn't used in this file, so we can remove the declaration. Signed-off-by:
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Jeff Dike authored
When UML is built as a static binary, it segfaults when run. The reason is that a memory hole that is present in dynamic binaries isn't there in static binaries, and it contains essential stuff. This fix removes the code which maps some anonymous memory into that hole and cleans up some related code. Signed-off-by:
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Jeff Dike authored
Spotted by Al Viro - eliminate a couple useless exports. Signed-off-by:
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Jeff Dike authored
This cleans up the mess that is the timer initialization. There used to be two timer handlers - one that basically ran during delay loop calibration and one that handled the timer afterwards. There were also two sets of timer initialization code - one that starts in user code and calls into the kernel side of the house, and one that starts in kernel code and calls user code. This eliminates one timer handler and consolidates the two sets of initialization code. [akpm@osdl.org: use new INTF_ flags] Signed-off-by:
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Tyler authored
I was looking at the code of the UML and more precisely at the functions set_task_sizes_tt and set_task_sizes_skas. I noticed that these 2 functions take a paramater (arg) which is not used : the function is always called with the value 0. I suppose that this value might change in the future (or even can be configured), so I added a constant in mem_user.h file. Also, I rounded CONFIG_HOST_TASk_SIZE to a 4M. Signed-off-by:
Tyler <tyler@agat.net> Signed-off-by:
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Irwan Djajadi authored
It already has .owner. Signed-off-by:
Irwan Djajadi <irwan.djajadi@iname.com> Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by:
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Eric Sesterhenn authored
Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
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Linus Torvalds authored
Do not panic a machine when swsusp signature can't be read. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Andrew Morton authored
kernel/power/swap.c: In function 'swsusp_write': kernel/power/swap.c:275: warning: 'start' may be used uninitialized in this function gcc isn't smart enough, so help it. Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by:
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Rafael J. Wysocki authored
swsusp should not use memcpy for snapshotting memory, because on some architectures memcpy may increase preempt_count (i386 does this when CONFIG_X86_USE_3DNOW is set). Then, as a result, wrong value of preempt_count is stored in the image. Replace memcpy in copy_data_pages with an open-coded loop. Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
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Andrew Morton authored
rtc_lock is supposed to be irq-safe. Signed-off-by:
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Adrian Bunk authored
Matthew Wilcox notified me that CONFIG_PM_STD_PARTITION="/dev/hda2" in the i386 defconfig wasn't a good idea (especially since it prevented booting for him due to another bug). This patch sets CONFIG_PM_STD_PARTITION="" in the i386 defconfig. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by:
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David Howells authored
Introduce the use of asm-offsets into the FRV architecture. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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David Howells authored
Add coredump capability for the ELF-FDPIC binfmt. Signed-off-by:
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David Howells authored
Move the roundup() macro from binfmt_elf.c into linux/kernel.h as it's generally useful. [akpm@osdl.org: nuke all the other implementations] Signed-off-by:
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David Howells authored
Add definitions for SEEK_SET, SEEK_CUR and SEEK_END to the kernel header files. Signed-off-by:
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David Howells authored
Adjust the ELF-FDPIC binfmt driver to conform much more to the CodingStyle, silly though it may be. Further changes: (*) Drop the casts to long for addresses in kdebug() statements (they're unsigned long already). (*) Use extra variables to avoid expressions longer than 80 chars by splitting the statement into multiple statements and letting the compiler optimise them back together. (*) Eliminate duplicate call of ksize() when working out how much space was actually allocated for the stack. (*) Discard the commented-out load_shlib prototype and op pointer as this will not be supported in ELF-FDPIC for the foreseeable future. Signed-off-by: -
David Howells authored
Fix execution through the FDPIC binfmt of programs stored on ramfs by preventing the ramfs mmap() returning successfully on a private mapping of a ramfs file. This causes NOMMU mmap to make a copy of the mapped portion of the file and map that instead. This could be improved by granting direct mapping access to read-only private mappings for which the data is stored on a contiguous run of pages. However, this is only likely to be the case if the file was extended with truncate before being written. ramfs is left to map the file directly for shared mappings so that SYSV IPC and POSIX shared memory both still work. Signed-off-by:
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David Howells authored
Fix some FRV arch compile errors, including: (*) Marking nr_kernel_pages as __meminitdata so that references to it end up being properly calculated rather than being assumed to be in the small data section (and thus calculated wrt the GP register). Not doing this causes the linker to emit errors as the offset is too big to fit into the load instruction. (*) Move pm_power_off into an unconditionally compiled .c file as it's now unconditionally accessed. (*) Declare frv_change_cmode() in a header file rather than in a .c file, and declare it asmlinkage. Signed-off-by: -
David Howells authored
Fix FDPIC compile errors. (akpm: we suspect it fixes a warning) Signed-off-by:
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Zhang, Yanmin authored
Sometimes, applications need below call to be successful although "/mnt/hugepages/file1" doesn't exist. fd = open("/mnt/hugepages/file1", O_CREAT|O_RDWR, 0755); *addr = mmap(NULL, 0x1024*1024*256, PROT_NONE, 0, fd, 0); As for regular pages (or files), above call does work, but as for huge pages, above call would fail because hugetlbfs_file_mmap would fail if (!(vma->vm_flags & VM_WRITE) && len > inode->i_size). This capability on huge page is useful on ia64 when the process wants to protect one area on region 4, so other threads couldn't read/write this area. A famous JVM (Java Virtual Machine) implementation on IA64 needs the capability. Signed-off-by:Zhang Yanmin <yanmin.zhang@intel.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Hugh Dickins <hugh@veritas.com> [ Expand-on-mmap semantics again... this time matching normal fs's. wli ] Acked-by:
William Lee Irwin III <wli@holomorphy.com> Signed-off-by:
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