- 08 Jan, 2007 6 commits
-
-
Linus Torvalds authored
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Provide basic printk_clock() implementation [ARM] Resolve fuse and direct-IO failures due to missing cache flushes [ARM] pass vma for flush_anon_page() [ARM] Fix potential MMCI bug [ARM] Fix kernel-mode undefined instruction aborts [ARM] 4082/1: iop3xx: fix iop33x gpio register offset [ARM] 4070/1: arch/arm/kernel: fix warnings from missing includes [ARM] 4079/1: iop: Update MAINTAINERS
-
Linus Torvalds authored
This reverts commit b0268726, which has been linked to several problem reports with IO-APIC and the timer. Machines either don't boot because the timer doesn't happen, or we get double timer interrupts because we end up double-routing the timer irq through multiple interfaces. See for example http://lkml.org/lkml/2006/12/16/101 http://lkml.org/lkml/2007/1/3/9 http://bugzilla.kernel.org/show_bug.cgi?id=7789 about some of the discussion. Patches to fix this cleanup exist (and have been confirmed to work fine at least for some of the affected cases) and we'll revisit it for 2.6.21, but this late in the -rc series we're better off just reverting the incomplete commit that caused the problems. Suggested-by:
Adrian Bunk <bunk@stusta.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Yinghai Lu <yinghai.lu@amd.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
-
Russell King authored
Current sched_clock() implementations on ARM cause unbootable kernels with PRINTK_TIME support enabled. To avoid this, provide a basic printk_clock() implementation which avoids sched_clock() being called before the page tables have been set up. Signed-off-by:Russell King <rmk+kernel@arm.linux.org.uk>
-
Russell King authored
fuse does not work on ARM due to cache incoherency issues - fuse wants to use get_user_pages() to copy data from the current process into kernel space. However, since this accesses userspace via the kernel mapping, the kernel mapping can be out of date wrt data written to userspace. This can lead to unpredictable behaviour (in the case of fuse) or data corruption for direct-IO. This resolves debian bug #402876 Signed-off-by: -
Russell King authored
Since get_user_pages() may be used with processes other than the current process and calls flush_anon_page(), flush_anon_page() has to cope in some way with non-current processes. It may not be appropriate, or even desirable to flush a region of virtual memory cache in the current process when that is different to the process that we want the flush to occur for. Therefore, pass the vma into flush_anon_page() so that the architecture can work out whether the 'vmaddr' is for the current process or not. Signed-off-by: -
Russell King authored
The MMCI driver might end up aborting the initial command and leaving the data part of the command sequence still in place. Avoid this problem by ensuring that any data sequence is properly cleared out when a command completes. Signed-off-by:
-
- 07 Jan, 2007 1 commit
-
-
Linus Torvalds authored
-
- 06 Jan, 2007 33 commits
-
-
Russell King authored
If the kernel attempts to execute a CP1 or CP2 instruction and it aborts, and a FP emulator is not loaded, we try to return as if to a user context, instead of the proper kernel context. Since the fault came from kernel mode, we must use the kernel return paths. Signed-off-by: -
Linus Torvalds authored
This reverts commit 59287c09. Hugh Dickins reports that it causes random failures on x86 with SuSE 10.2, and points out "Isn't that randomization, anywhere from 0x10000 to ELF_ET_DYN_BASE, sure to place the ET_DYN from time to time just where the comment says it's trying to avoid? I assume that somehow results in the error reported." (where the comment in question is the existing comment in the source code about mmap/brk clashes). Suggested-by:
Hugh Dickins <hugh@veritas.com> Acked-by:
Marcus Meissner <meissner@suse.de> Cc: Andrew Morton <akpm@osdl.org> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by:
-
Dan Williams authored
iop33x gpio offset is correct in include/asm-arm/arch-iop33x/iop33x.h, but include/asm-arm/hardware/iop3xx.h adds 4. Signed-off-by:
Dan Williams <dan.j.williams@intel.com> Signed-off-by:
-
Ben Dooks authored
Include <asm/io.h> to fix the warning: arch/arm/kernel/traps.c:647:6: warning: symbol '__readwrite_bug' was not declared. Should it be static? Include <linux/mc146818rtc.h> to fix the warning: arch/arm/kernel/time.c:42:1: warning: symbol 'rtc_lock' was not declared. Should it be static? Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
-
Dan Williams authored
Signed-off-by:
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: [PATCH] Driver core: Fix prefix driver links in /sys/module by bus-name
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: [PATCH] PCI: disable PCI_MULTITHREAD_PROBE
-
Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: asix: Fix AX88772 device PHY selection USB: usblp.c - add Kyocera Mita FS 820 to list of "quirky" printers sisusb_con warning fixes USB: Fixed bug in endpoint release function. USB: small update to Documentation/usb/acm.txt USB storage: fix ipod ejecting issue USB Storage: unusual_devs: add supertop drives USB: omap_udc build fixes (sync with linux-omap) USB: funsoft is borken on sparc USB: fix interaction between different interfaces in an "Option" usb device UHCI: support device_may_wakeup UHCI: make test for ASUS motherboard more specific
-
git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c/m41t00: Do not forget to write year i2c-mv64xxx: Fix random oops at boot i2c: Migration aids for i2c_adapter.dev removal i2c-pnx: Add entry to MAINTAINERS i2c-pnx: Fix interrupt handler, get rid of EARLY config option
-
Erik Jacobson authored
On ia64, the various functions that make up cn_proc.c cause kernel unaligned access errors. If you are using these, for example, to get notification about all tasks forking and exiting, you get multiple unaligned access errors per process. Use put_unaligned() in the appropriate palces to fix this. Signed-off-by:
Erik Jacobson <erikj@sgi.com> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: <stable@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
-
Andrew Morton authored
At the end of shrink_all_memory() we forget to recalculate lru_pages: it can be zero. Fix that up, and add a helper function for this operation too. Also, recalculate lru_pages each time around the inner loop to get the balancing correct. Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by:
-
Evgeniy Dushistov authored
Looks like this is the problem, which point Al Viro some time ago: ufs's get_block callback allocates 16k of disk at a time, and links that entire 16k into the file's metadata. But because get_block is called for only a single buffer_head (a 2k buffer_head in this case?) we are only able to tell the VFS that this 2k is buffer_new(). So when ufs_getfrag_block() is later called to map some more data in the file, and when that data resides within the remaining 14k of this fragment, ufs_getfrag_block() will incorrectly return a !buffer_new() buffer_head. I don't see _right_ way to do nullification of whole block, if use inode page cache, some pages may be outside of inode limits (inode size), and will be lost; if use blockdev page cache it is possible to zero real data, if later inode page cache will be used. The simpliest way, as can I see usage of block device page cache, but not only mark dirty, but also sync it during "nullification". I use my simple tests collection, which I used for check that create,open,write,read,close works on ufs, and I see that this patch makes ufs code 18% slower then before. Signed-off-by:
-
Hugh Dickins authored
These days, if you swapoff when there isn't enough memory, OOM killer gives "BUG: scheduling while atomic" and the machine hangs: badness() needs to do its PF_SWAPOFF return after the task_unlock (tasklist_lock is also held here, so p isn't going to be freed: PF_SWAPOFF might get turned off at any moment, but that doesn't really matter). Signed-off-by:
-
Matthijs van Otterdijk authored
write_lcd() in toshiba_acpi returns 0 on success since the big ACPI patch merged in 2.6.20-rc2. It should return count. Signed-off-by:
Matthijs van Otterdijk <thotter@gmail.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by:
-
Cyrill V. Gorcunov authored
qconf may cause SIGSEGV by trying to show debug information on empty menu items Signed-off-by:
Cyrill V. Gorcunov <gorcunov@gmail.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
-
Christoph Lameter authored
Both process_zones() and drain_node_pages() check for populated zones before touching pagesets. However, __drain_pages does not do so, This may result in a NULL pointer dereference for pagesets in unpopulated zones if a NUMA setup is combined with cpu hotplug. Initially the unpopulated zone has the pcp pointers pointing to the boot pagesets. Since the zone is not populated the boot pageset pointers will not be changed during page allocator and slab bootstrap. If a cpu is later brought down (first call to __drain_pages()) then the pcp pointers for cpus in unpopulated zones are set to NULL since __drain_pages does not first check for an unpopulated zone. If the cpu is then brought up again then we call process_zones() which will ignore the unpopulated zone. So the pageset pointers will still be NULL. If the cpu is then again brought down then __drain_pages will attempt to drain pages by following the NULL pageset pointer for unpopulated zones. Signed-off-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
-
Alan authored
The HPT37x driver very carefully handles DMA completions and the needed fixups are done on pci registers 0x50 and 0x52. This is unfortunate because the actual registers are 0x50 and 0x54. Fixing this offset cures the second channel problems reported. Secondly there are some problems with the HPT370 and certain ATA drives. The filter code however only filters ATAPI devices due to a reversed type check. Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
-
Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Acked-by:
-
Dor Laor authored
No need to test for rflags.if as both VT and SVM specs assure us that on exit caused from interrupt window opening, 'if' is set. Signed-off-by:
Dor Laor <dor.laor@qumranet.com> Signed-off-by:
Avi Kivity <avi@qumranet.com> Signed-off-by:
-
Ingo Molnar authored
Small optimization/cleanup: page == page_header(page->page_hpa) Signed-off-by:Ingo Molnar <mingo@elte.hu> Signed-off-by:
-
Ingo Molnar authored
Prevent the guest's loading of a corrupt cr3 (pointing at no guest phsyical page) from crashing the host. Signed-off-by:
-
Avi Kivity authored
If we emulate a write, we fail to set the dirty bit on the guest pte, leading the guest to believe the page is clean, and thus lose data. Bad. Fix by setting the guest pte dirty bit under such conditions. Signed-off-by:
-
Avi Kivity authored
It overwrites the right cr3 set from mmu setup. Happens only with the test harness. Signed-off-by:
-
Avi Kivity authored
Signed-off-by:
-
Ingo Molnar authored
Signed-off-by:
-
Avi Kivity authored
Fixes oops on early close of /dev/kvm. Signed-off-by:
-
Avi Kivity authored
This will allow us to see the root cause when a vmwrite error happens. Signed-off-by:
-
Avi Kivity authored
Signed-off-by:
-
Avi Kivity authored
mmu_destroy flushes the guest tlb (indirectly), which needs a valid vcpu. Signed-off-by:
-
Avi Kivity authored
If we reduce permissions on a pte, we must flush the cached copy of the pte from the guest's tlb. This is implemented at the moment by flushing the entire guest tlb, and can be improved by flushing just the relevant virtual address, if it is known. Signed-off-by:
-
Avi Kivity authored
Signed-off-by:
-
Avi Kivity authored
The mmu sometimes needs memory for reverse mapping and parent pte chains. however, we can't allocate from within the mmu because of the atomic context. So, move the allocations to a central place that can be executed before the main mmu machinery, where we can bail out on failure before any damage is done. (error handling is deffered for now, but the basic structure is there) Signed-off-by:
-
Avi Kivity authored
Because mmu pages have attached rmap and parent pte chain structures, we need to zap them before freeing so the attached structures are freed. Signed-off-by:
-
