- 22 Dec, 2006 7 commits
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Michael Riepe authored
Some msrs, such as MSR_STAR, are not available on all processors. Exporting them causes qemu to try to fetch them, which will fail. So, check all msrs for validity at module load time. Signed-off-by: Michael Riepe <michael@mr511.de> Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Avi Kivity authored
Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Avi Kivity authored
Fixes sf bug 1614113 (segfaults in nbench). Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Avi Kivity authored
This is necessary for linux guests. Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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James Morris authored
Consolidate the logic for checking whether a vcpu index is valid. Also, use likely(), as a valid value should be the overwhelmingly common case. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Andrew Morton authored
Only (un)account for IO and page-dirtying for devices which have real backing store (ie: not tmpfs or ramdisks). Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Jens Axboe authored
The recent io scheduler allow_merge commit left the block layer with no merging, oops. This patch fixes that up. That means the CFQ change needs to be verified again, it might not fix the original bug now. But that's a seperate thing, I'll double check that tomorrow. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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- 21 Dec, 2006 22 commits
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Andrew Morton authored
truncate presently invalidates the dirty page's buffer_heads then shoots down the page. But try_to_free_buffers() will now bale out because the page is dirty. Net effect: the LRU gets filled with dirty pages which have invalidated buffer_heads attached. They have no ->mapping and hence cannot be cleaned. The machine leaks memory at an enormous rate. Fix this by cleaning the page before running try_to_free_buffers(), so try_to_free_buffers() can do its work. Also, remember to do dirty-page-acoounting in cancel_dirty_page() so the machine won't wedge up trying to write non-existent dirty pages. Probably still wrong, but now less so. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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David Chinner authored
XFS appears to call clear_page_dirty to get the mapping tree dirty tag set correctly at the same time the page dirty flag is cleared. I note that this can be done by set_page_writeback() if we clear the dirty flag on the page first when we are writing back the entire page. Hence it seems to me that the XFS call to clear_page_dirty() could easily be substituted by clear_page_dirty_for_io() followed by a call to set_page_writeback() to get the mapping tree tags set correctly after the page has been marked clean. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Miklos Szeredi authored
The use by FUSE was just a remnant of an optimization from the time when writable mappings were supported. Now FUSE never actually allows the creation of dirty pages, so this invocation of clear_page_dirty() is effectively a no-op. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Dave Kleikamp authored
This patch removes some questionable code that attempted to make a no-longer-used page easier to reclaim. Calling metapage_writepage against such a page will not result in any I/O being performed, so removing this code shouldn't be a big deal. [ It's likely that we could have just replaced the "clear_page_dirty()" call with a call to "cancel_dirty_page()" instead, but in the meantime this is cleaner and simpler anyway, so unless there is some overriding reason (and Dave implies there isn't) I'll just use this patch as-is. - Linus ] Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
They were horribly easy to mis-use because of their tempting naming, and they also did way more than any users of them generally wanted them to do. A dirty page can become clean under two circumstances: (a) when we write it out. We have "clear_page_dirty_for_io()" for this, and that function remains unchanged. In the "for IO" case it is not sufficient to just clear the dirty bit, you also have to mark the page as being under writeback etc. (b) when we actually remove a page due to it becoming inaccessible to users, notably because it was truncate()'d away or the file (or metadata) no longer exists, and we thus want to cancel any outstanding dirty state. For the (b) case, we now introduce "cancel_dirty_page()", which only touches the page state itself, and verifies that the page is not mapped (since cancelling writes on a mapped page would be actively wrong as it is still accessible to users). Some filesystems need to be fixed up for this: CIFS, FUSE, JFS, ReiserFS, XFS all use the old confusing functions, and will be fixed separately in subsequent commits (with some of them just removing the offending logic, and others using clear_page_dirty_for_io()). This was confirmed by Martin Michlmayr to fix the apt database corruption on ARM. Cc: Martin Michlmayr <tbm@cyrius.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Andrei Popa <andrei.popa@i-neo.ro> Cc: Andrew Morton <akpm@osdl.org> Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Cc: Gordon Farquharson <gordonfarquharson@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
This is preparatory work in our continuing saga on some hard-to-trigger file corruption with shared writable mmap() after the dirty page tracking changes (commit d08b3851 etc) were merged. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Ingo Molnar authored
fix the schedule_on_each_cpu() implementation: __queue_work() is now stricter, hence set the work-pending bit before passing in the new work. (found in the -rt tree, using Peter Zijlstra's files-lock scalability patchset) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Al Viro authored
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes: [GFS2] Fix Kconfig [DLM] fix compile warning
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Peter Williams authored
Problem: sched_fork() has always called scheduler_tick() in some (unlikely) circumstances in order to update the current task in light of those circumstances. It has always been the case that the work done by scheduler_tick() was more than was required to handle the problem in hand but no harm was done except for the waste of a few CPU cycles. However, the splitting of scheduler_tick() into two procedures in 2.6.20-rc1 enables the wasted cycles to be saved as the new procedure task_running_tick() does all the work that is required to rectify the problem being handled. Solution: Replace the call to scheduler_tick() in sched_fork() with a call to task_running_tick(). Signed-off-by: Peter Williams <pwil3058@bigpond.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Ingo Molnar authored
if CONFIG_CALGARY_IOMMU is built into the kernel via CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT, or is enabled via the iommu=calgary boot option, then the detect_calgary() function runs to detect the presence of a Calgary IOMMU. detect_calgary() first searches the BIOS EBDA area for a "rio_table_hdr" BIOS table. It has this parsing algorithm for the EBDA: while (offset) { ... /* The next offset is stored in the 1st word. 0 means no more */ offset = *((unsigned short *)(ptr + offset)); } got that? Lets repeat it slowly: we've got a BIOS-supplied data structure, plus Linux kernel code that will only break out of an infinite parsing loop once the BIOS gives a zero offset. Ok? Translation: what an excellent opportunity for BIOS writers to lock up the Linux boot process in an utterly hard to debug place! Indeed the BIOS jumped on that opportunity on my box, which has the following EBDA chaining layout: 384, 65282, 65535, 65535, 65535, 65535, 65535, 65535 ... see the pattern? So my, definitely non-Calgary system happily locks up in detect_calgary()! the patch below fixes the boot hang by trusting the BIOS-supplied data structure a bit less: the parser always has to make forward progress, and if it doesnt, we break out of the loop and i get the expected kernel message: Calgary: Unable to locate Rio Grande Table in EBDA - bailing! Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Ingo Molnar authored
one of my boxes didnt boot the 2.6.20-rc1-rt0 kernel rpm, it hung during early bootup. After an hour or two of happy debugging i narrowed it down to the CALGARY_IOMMU_ENABLED_BY_DEFAULT option, which was freshly added to 2.6.20 via the x86_64 tree and /enabled by default/. commit bff6547b claims: [PATCH] Calgary: allow compiling Calgary in but not using it by default This patch makes it possible to compile Calgary in but not use it by default. In this mode, use 'iommu=calgary' to activate it. but the change does not actually practice it: config CALGARY_IOMMU_ENABLED_BY_DEFAULT bool "Should Calgary be enabled by default?" default y depends on CALGARY_IOMMU help Should Calgary be enabled by default? if you choose 'y', Calgary will be used (if it exists). If you choose 'n', Calgary will not be used even if it exists. If you choose 'n' and would like to use Calgary anyway, pass 'iommu=calgary' on the kernel command line. If unsure, say Y. it's both 'default y', and says "If unsure, say Y". Clearly not a typo. disabling this option makes my box boot again. The patch below fixes the Kconfig entry. Grumble. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Geert Uytterhoeven authored
__set_irq_handler: Kill a bogus space Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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git://brick.kernel.dk/data/git/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block: [PATCH] block: document io scheduler allow_merge_fn hook [PATCH] cfq-iosched: don't allow sync merges across queues [PATCH] Fixup blk_rq_unmap_user() API [PATCH] __blk_rq_unmap_user() fails to return error [PATCH] __blk_rq_map_user() doesn't need to grab the queue_lock [PATCH] Remove queue merging hooks [PATCH] ->nr_sectors and ->hard_nr_sectors are not used for BLOCK_PC requests [PATCH] cciss: fix XFER_READ/XFER_WRITE in do_cciss_request [PATCH] cciss: set default raid level when reading geometry fails
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Linus Torvalds authored
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] sata_svw, sata_vsc: kill iomem warnings [PATCH] libata: take scmd->cmd_len into account when translating SCSI commands [PATCH] libata: kill @cdb argument from xlat methods [PATCH] libata: clean up variable name usage in xlat related functions [libata] Move some PCI IDs from sata_nv to ahci [libata] pata_via: suspend/resume support fix [libata] pata_cs5530: suspend/resume support tweak
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: Driver core: proper prototype for drivers/base/init.c:driver_init() kobject: kobject_uevent() returns manageable value kref refcnt and false positives
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (22 commits) acpiphp: Link-time error for PCI Hotplug shpchp: cleanup shpchp.h shpchp: remove shpchprm_get_physical_slot_number shpchp: cleanup struct controller shpchp: remove unnecessary struct php_ctlr PCI: ATI sb600 sata quirk PCI legacy resource fix PCI: don't export device IDs to userspace PCI: Be a bit defensive in quirk_nvidia_ck804() so we don't risk dereferencing a NULL pdev. PCI: Fix multiple problems with VIA hardware PCI: Only check the HT capability bits in mpic.c PCI: Use pci_find_ht_capability() in drivers/pci/quirks.c PCI: Add #defines for Hypertransport MSI fields PCI: Use pci_find_ht_capability() in drivers/pci/htirq.c PCI: Add pci_find_ht_capability() for finding Hypertransport capabilities PCI: Create __pci_bus_find_cap_start() from __pci_bus_find_cap() pci: Introduce pci_find_present PCI: pcieport-driver: remove invalid warning message rpaphp: compiler warning cleanup PCI quirks: remove redundant check ...
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (34 commits) USB Storage: remove duplicate Nokia entry in unusual_devs.h [PATCH] bluetooth: add support for another Kensington dongle [PATCH] usb serial: add support for Novatel S720/U720 CDMA/EV-DO modems [PATCH] USB: Nokia E70 is an unusual device USB: fix to usbfs_snoop logging of user defined control urbs USB: at91_udc: Additional checks USB: at91_udc: Cleanup variables after failure in usb_gadget_register_driver() USB: at91_udc: allow drivers that support high speed USB: u132-hcd/ftdi-elan: add support for Option GT 3G Quad card USB: at91_udc, misc fixes USB: at91 udc, support at91sam926x addresses USB: OHCI support for PNX8550 USB: ohci handles hardware faults during root port resets USB: ohci at91 warning fix USB: ohci whitespace/comment fixups USB: MAINTAINERS update, EHCI and OHCI USB: gadget driver unbind() is optional; section fixes; misc UHCI: module parameter to ignore overcurrent changes USB: Nokia E70 is an unusual device USB AUERSWALD: replace kmalloc+memset with kzalloc ...
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Linus Torvalds authored
* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Fix register save area alignment for swapcontext syscall [POWERPC] Fix PCI device channel state initialization [POWERPC] Update MTD OF documentation [POWERPC] Probe Efika platform before CHRP. [POWERPC] Fix build of cell zImage.initrd [POWERPC] iSeries: fix CONFIG_VIOPATH dependency [POWERPC] iSeries: fix viocons init [POWERPC] iSeries: fix viocd init [POWERPC] iSeries: fix iseries_veth init [POWERPC] iSeries: fix viotape init [POWERPC] iSeries: fix viodasd init [POWERPC] Workaround oldworld OF bug with IRQs & P2P bridges [POWERPC] powerpc: add scanning of ebc bus to of_platform [POWERPC] spufs: fix assignment of node numbers [POWERPC] cell: Fix spufs with "new style" device-tree [POWERPC] cell: Enable spider workarounds on all PCI buses [POWERPC] cell: add forward struct declarations to spu.h [POWERPC] cell: update cell_defconfig
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Linus Torvalds authored
* 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: Stop defining pci_pretty_name drm: r128: comment aligment with drm git drm: make kernel context switch same as for drm git tree. drm: fixup comment header style drm: savage: compat fix from drm git. drm: Unify radeon offset checking. i915_vblank_tasklet: Try harder to avoid tearing. DRM: handle pci_enable_device failure drm: fix return value check
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Linus Torvalds authored
* 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (30 commits) [ALSA] version 1.0.14rc1 [ALSA] ac97: Identify CMI9761 chips. [ALSA] ac97_codec - trivial fix for bit update functions [ALSA] snd-ca0106: Fix typos. [ALSA] snd-ca0106: Add new card variant. [ALSA] sound: fix PCM substream list [ALSA] sound: initialize rawmidi substream list [ALSA] snd_hda_intel 3stack mode for ASUS P5P-L2 [ALSA] Remove IRQF_DISABLED for shared PCI irqs [ALSA] Fix invalid assignment of PCI revision [ALSA] Fix races in PCM OSS emulation [ALSA] hda-codec - fix typo in PCI IDs [ALSA] ac97 - Fix potential negative array index [ALSA] hda-codec - Verbose proc output for PCM parameters [ALSA] hda-codec - Fix detection of supported sample rates [ALSA] hda-codec - Fix model for ASUS V1j laptop [ALSA] sound/core/control.c: remove dead code [ALSA] hda-codec - Add model for HP q965 [ALSA] pcm core: fix silence_start calculations [ALSA] hda-codec - Fix a typo ...
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Linus Torvalds authored
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (29 commits) [ARM] 4062/1: S3C24XX: Anubis and Osiris shuld have CONFIG_PM_SIMTEC [ARM] 4060/1: update several ARM defconfigs [ARM] 4061/1: xsc3: change of maintainer [ARM] 4059/1: VR1000: fix LED3's platform device number [ARM] 4022/1: iop13xx: generic irq fixups [ARM] 4015/1: s3c2410 cpu ifdefs [ARM] 4057/1: ixp23xx: unconditionally enable hardware coherency [ARM] 4056/1: iop13xx: fix resource.end off-by-one in flash setup [ARM] 4055/1: iop13xx: fix phys_io/io_pg_offst for iq81340mc/sc [ARM] 4054/1: ep93xx: add HWCAP_CRUNCH [ARM] 4052/1: S3C24XX: Fix PM in arch/arm/mach-s3c2410/Kconfig [ARM] Fix warnings from asm/system.h [ARM] 4051/1: S3C24XX: clean includes in S3C2440 and S3C2442 support [ARM] 4050/1: S3C24XX: remove old changelogs in arch/arm/mach-s3c2410 [ARM] 4049/1: S3C24XX: fix sparse warning due to upf_t in regs-serial.h [ARM] 4048/1: S3C24XX: make s3c2410_pm_resume() static [ARM] 4046/1: S3C24XX: fix sparse errors arch/arm/mach-s3c2410 [ARM] 4045/1: S3C24XX: remove old VA for non-shared areas [ARM] 4044/1: S3C24XX: fix sparse warnings in arch/arm/mach-s3c2410/s3c2442-clock.c [ARM] 4043/1: S3C24XX: fix sparse warnings in arch/arm/mach-s3c2410/s3c2440-clock.c ...
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- 20 Dec, 2006 11 commits
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Greg Kroah-Hartman authored
How many times are we going to merge this entry... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Jeff Garzik authored
Now that iomap merge is close to reality, and since the warnings and issue have been around so long, we don't need a reminder on every build that libata needs to be converted over to iomap. Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Olivier Galibert authored
Add the stupid sco fixup quirk to yet another Broadcom/Kensington device. Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Eric Smith authored
Add USB vendor/device IDs for Novatel Wireless S720 and U720 CDMA/EV-DO modems to airprime.c. Signed-off-by: Eric Smith <eric@brouhaha.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Andrew Morton authored
Taken from http://bugzilla.kernel.org/show_bug.cgi?id=7508 When the Nokia E70 Phone is plugged in to the USB port, I get: end_request: I/O error, dev sda, sector 1824527 sd 0:0:0:0: SCSI error: return code = 0x10070000 end_request: I/O error, dev sda, sector 1824535 sd 0:0:0:0: SCSI error: return code = 0x10070000 The fix is to add these lines to drivers/usb/storage/unusual_devs.h: Cc: <honkkis@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Tejun Heo authored
libata depended on SCSI command to have the correct length when tranlating it into an ATA command. This generally worked for commands issued by SCSI HLD but user could issue arbitrary broken command using sg interface. Also, when building ATAPI command, full command size was always copied. Because some ATAPI devices needs bytes after CDB cleared, if upper layer doesn't clear bytes after CDB, such devices will malfunction. This necessiated recent clear-garbage-after-CDB fix in sg interfaces. However, scsi_execute() isn't fixed yet and HL-DT-ST DVD-RAM GSA-H30N malfunctions on initialization commands issued from SCSI. This patch makes xlat functions always consider SCSI cmd_len. Each translation function checks for proper cmd_len and ATAPI translaation clears bytes after CDB. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Douglas Gilbert <dougg@torque.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Tejun Heo authored
xlat function will be updated to consider qc->scsicmd->cmd_len and many xlat functions deference qc->scsicmd already. It doesn't make sense to pass qc->scsicmd->cmnd as @cdb separately. Kill the argument. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Tejun Heo authored
Variable names in xlat functions are quite confusing now. 'scsicmd' is used for CDB while qc->scsicmd points to struct scsi_cmnd while 'cmd' is used for struct scsi_cmnd. This patch cleans up variable names in xlat functions such that 'scmd' is used for struct scsi_cmnd and 'cdb' for CDB. Also, 'scmd' local variable is added if qc->scsicmd is used multiple times. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Peer Chen authored
The content of memory map io of BAR5 have been change from MCP65 then sata_nv can't work fine on the platform based on MCP65 and MCP67, so move their IDs from sata_nv.c to ahci.c. Signed-off-by: Peer Chen <pchen@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Adrian Bunk authored
Add a prototype for driver_init() in include/linux/device.h. Also remove a static function of the same name in drivers/acpi/ibm_acpi.c to ibm_acpi_driver_init() to fix the namespace collision. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Aneesh Kumar K.V authored
Since kobject_uevent() function does not return an integer value to indicate if its operation was completed with success or not, it is worth changing it in order to report a proper status (success or error) instead of returning void. [randy.dunlap@oracle.com: Fix inline kobject functions] Cc: Mauricio Lin <mauriciolin@gmail.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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