- Nov 01, 2007
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Benjamin Herrenschmidt authored
The 44x family has an interesting "feature" which is a virtually tagged instruction cache (yuck !). So far, we haven't dealt with it properly, which means we've been mostly lucky or people didn't report the problems, unless people have been running custom patches in their distro... This is an attempt at fixing it properly. I chose to do it by setting a global flag whenever we change a PTE that was previously marked executable, and flush the entire instruction cache upon return to user space when that happens. This is a bit heavy handed, but it's hard to do more fine grained flushes as the icbi instruction, on those processor, for some very strange reasons (since the cache is virtually mapped) still requires a valid TLB entry for reading in the target address space, which isn't something I want to deal with. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Benjamin Herrenschmidt authored
On 4xx CPUs, the current implementation of flush_tlb_page() uses a low level _tlbie() assembly function that only works for the current PID. Thus, invalidations caused by, for example, a COW fault triggered by get_user_pages() from a different context will not work properly, causing among other things, gdb breakpoints to fail. This patch adds a "pid" argument to _tlbie() on 4xx processors, and uses it to flush entries in the right context. FSL BookE also gets the argument but it seems they don't need it (their tlbivax form ignores the PID when invalidating according to the document I have). Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Roel Kluin authored
Don't allocate hose2 when when hose1 can't be allocated and free hose1 when hose2 can't be allocated. Signed-off-by:
Roel Kluin <12o3l@tiscali.nl> Signed-off-by:
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Valentine Barshak authored
PowerPC 440EP(x) 440GR(x) processors have the same PVR values, since they have identical cores. However, FPU is not supported on GR(x) and enabling APU instruction broadcast in the CCR0 register (to enable FPU) may cause unpredictable results. There's no safe way to detect FPU support at runtime. This patch provides a workarund for the issue. We use a POWER6 "logical PVR approach". First, we identify all EP(x) and GR(x) processors as GR(x) ones (which is safe). Then we check the device tree cpu path. If we have a EP(x) processor entry, we call identify_cpu again with PVR | 0x8. This bit is always 0 in the real PVR. This way we enable FPU only for 440EP(x). Signed-off-by:
Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by:
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Grant Likely authored
Change the wait_tx routine to call cpu_relax() instead of udelay() to reduce console output latency and test for the TXFULL bit instead of TXEMPTY. That way the FIFO doesn't need to by 100% flushed before writing the next character. Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> Acked-by:
Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by:
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Grant Likely authored
Signed-off-by:
Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Signed-off-by:
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Grant Likely authored
Add the 'set -e' command to the wrapper script so that if any command fails then the script will automatically exit Signed-off-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Grant Likely authored
Allow wrapper script to print verbose progress when the V is set in the environment. Signed-off-by:
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- Oct 30, 2007
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Dirk Hohndel authored
Fix links to files in Documentation/* in various Kconfig files Signed-off-by:
Dirk Hohndel <hohndel@linux.intel.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Zach Brown authored
Commit commit 65b8291c ("dio: invalidate clean pages before dio write") introduced a bug which stopped dio from ever invalidating the page cache after writes. It still invalidated it before writes so most users were fine. Karl Schendel reported ( http://lkml.org/lkml/2007/10/26/481 ) hitting this bug when he had a buffered reader immediately reading file data after an O_DIRECT wirter had written the data. The kernel issued read-ahead beyond the position of the reader which overlapped with the O_DIRECT writer. The failure to invalidate after writes caused the reader to see stale data from the read-ahead. The following patch is originally from Karl. The following commentary is his: The below 3rd try takes on your suggestion of just invalidating no matter what the retval from the direct_IO call. I ran it thru the test-case several times and it has worked every time. The post-invalidate is probably still too early for async-directio, but I don't have a testcase for that; just sync. And, this won't be any worse in the async case. I added a test to the aio-dio-regress repository which mimics Karl's IO pattern. It verifed the bad behaviour and that the patch fixed it. I agree with Karl, this still doesn't help the case where a buffered reader follows an AIO O_DIRECT writer. That will require a bit more work. This gives up on the idea of returning EIO to indicate to userspace that stale data remains if the invalidation failed. Signed-off-by:
Zach Brown <zach.brown@oracle.com> Cc: Karl Schendel <kschendel@datallegro.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Leonid Ananiev <leonid.i.ananiev@linux.intel.com> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix incorrect return value from ia64_setup_msi_irq() [IA64] arch/ia64/sn/kernel/mca.c: undo lock when sn_oemdata can't be extended [IA64] update sn2 defconfig to 64kb pages [IA64] fix typo in per_cpu_offset [IA64] /proc/cpuinfo "physical id" field cleanups [IA64] vDSO vs --build-id [IA64] check-segrel.lds vs --build-id [IA64] vmcore_find_descriptor_size should be in __init [IA64] ia64/mm/init.c: fix section mismatches
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6Linus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: ixgb: fix TX hangs under heavy load e1000e: Fix typo ! & ixgbe: minor sparse fixes e1000: sparse warnings fixes ixgb: fix sparse warnings e1000e: fix sparse warnings mv643xx_eth: Fix MV643XX_ETH offsets used by Pegasos 2 Blackfin EMAC driver: Fix Ethernet communication bug (dupliated and lost packets) DM9601: Support for ADMtek ADM8515 NIC
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-devLinus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: implement and use ATA_QCFLAG_QUIET libata: stop being overjealous about non-IO commands libata: flush is an IO command sata_promise: cleanups sata_promise: ASIC PRD table bug workaround, take 2
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Auke Kok authored
A merge error occurred where we merged the wrong block here in version 1.0.120. The right condition for frags is slightly different then for the skb, so account for the difference properly and trim the TSO based size right. Originally part of a fix reported by IBM to fix TSO hangs on pSeries hardware. Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by:
Auke Kok <auke-jan.h.kok@intel.com> Cc: Andy Gospodarek <andy@greyhouse.net> Signed-off-by:
Jeff Garzik <jeff@garzik.org>
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Roel Kluin authored
Signed-off-by:
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Stephen Hemminger authored
Make strings const if possible, and fix includes so forward definitions are seen. Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Stephen Hemminger authored
Fix sparse warnings and problems from e1000 driver. Added a sparse fix for the module param array index -- Auke Signed-off-by:
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Stephen Hemminger authored
Fix sparse warnings in ixgb driver for net-2.6.24. Added a sparse fix for invalid declaration using non-constant value in ixgb_set_multi. Added a fix for the module param array index and allows int params in the array. --Auke Signed-off-by:
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Stephen Hemminger authored
Fix sparse warnings from e1000e driver in net-2.6.24. Added a sparse fix for module param arrays which can have int values but only the array index needs to be unsigned. --Auke Signed-off-by:
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Dale Farnsworth authored
In the mv643xx_eth driver, we now use offsets from the ethernet register block within the chip, but the pegasos 2 platform still needs offsets from the full chip's register base address. Signed-off-by:
Dale Farnsworth <dale@farnsworth.org> Signed-off-by:
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Michael Hennerich authored
Fix Ethernet communication bug(dupliated and lost packets) in RMII PHY mode- dont call mac_disable and mac_enable during 10/100 REFCLK changes - mac_enable screws up the DMA descriptor chain Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
Bryan Wu <bryan.wu@analog.com> Signed-off-by:
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Peter Korsgaard authored
Add device ID for the ADMtek ADM8515 USB NIC to the DM9601 driver. Signed-off-by:
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Kenji Kaneshige authored
Fix the problem that pci_enable_msi() fails on ia64 platform. The cause of this problem is incorrect return value of ia64_setup_msi_irq(). It must return 0 on success, instead of irq number. Signed-off-by:
Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by:
Tony Luck <tony.luck@intel.com>
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J. Bruce Fields authored
It's currently possible to send posix_locks_deadlock() into an infinite loop (under the BKL). For now, fix this just by bailing out after a few iterations. We may want to fix this in a way that better clarifies the semantics of deadlock detection. But that will take more time, and this minimal fix is probably adequate for any realistic scenario, and is simple enough to be appropriate for applying to stable kernels now. Thanks to George Davis for reporting the problem. Cc: "George G. Davis" <gdavis@mvista.com> Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Acked-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: Blackfin arch: use a less common define name in BF549 Blackfin arch: Add missing definitions for BF561 Blackfin arch: reclaim a few bytes from the end of our init section Blackfin arch: fix libata data struct member from irq_type to irq_flags Blackfin arch: Do not pollute name space used in linux-2.6.x/sound Blackfin arch: Fix bug set correct baud for spi mmc and enable SPI after DMA. Blackfin arch: update board defconfig files according to latest information from ADI datasheet Blackfin arch: ensure that speculative loads of bad pointers don't cause us to do bad things. Blackfin arch: Add missing definitions of BF54x Blackfin arch: Fix random crash issue found by Michael. Blackfin arch: fix bug: tell users if the kernel is recovering from a fault condition Blackfin arch: add support for checking/clearing overruns in generic purpose Timer API Blackfin arch: cleanup arch/blackfin/kernel/traps.c handling code. Blackfin arch: Apply Bluetchnix vendor patch provided by Harald Krapfenbauer Blackfin arch: fix bug BlueTechnix CM-BF537 board config uses wrong IRQ for net2272 driver Blackfin arch: fix bug: kernel prints out error message twice Blackfin arch: add NFC driver support in BF527-EZKIT board Blackfin arch: Added support for HV Sistemas H8606 board
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [TIPC]: Add tipc_config.h to include/linux/Kbuild. [WAN]: lmc_ioctl: don't return with locks held [SUNRPC]: fix rpc debugging [TCP]: Saner thash_entries default with much memory. [SUNRPC] rpc_rdma: we need to cast u64 to unsigned long long for printing [IPv4] SNMP: Refer correct memory location to display ICMP out-going statistics [NET]: Fix error reporting in sys_socketpair(). [NETFILTER]: nf_ct_alloc_hashtable(): use __GFP_NOWARN [NET]: Fix race between poll_napi() and net_rx_action() [TCP] MD5: Remove some more unnecessary casting. [TCP] vegas: Fix a bug in disabling slow start by gamma parameter. [IPVS]: use proper timeout instead of fixed value [IPV6] NDISC: Fix setting base_reachable_time_ms variable.
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Krzysztof Helt authored
Signed-off-by:
Krzysztof Helt <krzysztof.h1@wp.pl> Acked-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Atsushi Nemoto authored
Since commit 97d97224 ("[SERIAL] Fix console initialisation ordering"), serial_core calls ->pm() on initialization even if the port was used for console. This behaviour breaks serial_txx9 console since The serial_txx9 driver initialize its port entirely on its ->pm() method if new state was 0. This patch adds checking for oldstate value to fix this probelm. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
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Takashi Iwai authored
Fix possible array overflow: drivers/pci/intel-iommu.c: In function ¡dmar_get_fault_reason¢: drivers/pci/intel-iommu.c:753: warning: array subscript is above array bounds drivers/pci/intel-iommu.c: In function ¡iommu_page_fault¢: drivers/pci/intel-iommu.c:753: warning: array subscript is above array bounds Signed-off-by:
Takashi Iwai <tiwai@suse.de> Cc: Mark Gross <mgross@linux.intel.com> Acked-by:
"Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Signed-off-by:
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Andrew Morton authored
Evgeniy said: I wonder on what type of UFS do you test this patch? NetBSD and FreeBSD do not use "fs_state", they use "fs_clean" flag, only Solaris does check like this: fs_state + fs_time == FSOK. That's why parentheses was like that. At now with linux-2.6.24-rc1-git1, I get: fs need fsck, but NetBSD's fsck says that's all ok. I suggest revert this patch. Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Satyam Sharma <satyam.sharma@gmail.com> Signed-off-by:
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Hugh Dickins authored
It's possible to provoke unionfs (not yet in mainline, though in mm and some distros) to hit shmem_writepage's BUG_ON(page_mapped(page)). I expect it's possible to provoke the 2.6.23 ecryptfs in the same way (but the 2.6.24 ecryptfs no longer calls lower level's ->writepage). This came to light with the recent find that AOP_WRITEPAGE_ACTIVATE could leak from tmpfs via write_cache_pages and unionfs to userspace. There's already a fix (e4230030 - writeback: don't propagate AOP_WRITEPAGE_ACTIVATE) in the tree for that, and it's okay so far as it goes; but insufficient because it doesn't address the underlying issue, that shmem_writepage expects to be called only by vmscan (relying on backing_dev_info capabilities to prevent the normal writeback path from ever approaching it). That's an increasingly fragile assumption, and ramdisk_writepage (the other source of AOP_WRITEPAGE_ACTIVATEs) is already careful to check wbc->for_reclaim before returning it. Make the same check in shmem_writepage, thereby sidestepping the page_mapped BUG also. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Cc: Erez Zadok <ezk@cs.sunysb.edu> Cc: <stable@kernel.org> Reviewed-by:
Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
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Glauber de Oliveira Costa authored
mm/sparse-vmemmap.c uses init_mm in some places. However, it is not present in any of the headers currently included in the file. init_mm is defined as extern in sched.h, so we add it to the headers list Up to now, this problem was masked by the fact that functions like set_pte_at() and pmd_populate_kernel() are usually macros that expand to simpler variants that does not use the first parameter at all. Signed-off-by:
Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by:
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Andi Kleen authored
No reason I can think of of making them default y Most people don't have the hardware and with default y they just pollute lots of configs during make oldconfig. Signed-off-by:
Andi Kleen <ak@suse.de> Acked-by:
"Nelson, Shannon" <shannon.nelson@intel.com> Signed-off-by:
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J. Bruce Fields authored
Commit baa3a2a0 ("sysctl: remove broken sunrpc debug binary sysctls"), by removing initialization of the ctl_name field, broke this conditional, preventing the display of rpc_tasks that you previously got when turning on rpc debugging. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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Olof Johansson authored
Remove warning from powerpc ppc64_defconfig builds: drivers/video/aty/radeon_pm.c:30: warning: 'radeon_reinitialize_M10' declared 'static' but never defined It's used only under CONFIG_PM, and only with CONFIG_X86 before it is defined, so the forward declaration can be moved under the ifdef. Signed-off-by:
Olof Johansson <olof@lixom.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Randy Dunlap authored
Fix FB_OMAP dependencies so that the OMAP FB driver options are presented correctly. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Corey Minyard authored
Coverity spotted some incorrect code in a recent change to the IPMI driver; this patch make sure the data is really long enough to pull the manufacturer id and product id out of a get device id message. Signed-off-by:
Corey Minyard <cminyard@mvista.com> Cc: Adrian Bunk <bunk@kernel.org> Cc: Stian Jordet <liste@jordet.net> Signed-off-by:
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Rafael J. Wysocki authored
Do not allow processes to clear their TIF_SIGPENDING if TIF_FREEZE is set, so that they will not race with the freezer (like mysqld does, for example). Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Nigel Cunningham <nigel@suspend2.net> Acked-by:
Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by:
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Tejun Heo authored
Implement ATA_QCFLAG_QUIET which indicates that there's no need to report if the command fails with AC_ERR_DEV and set it for passthrough commands. Combined with previous changes, this now makes device errors for all direct commands reported directly to the issuer without going through EH actions and reporting. Note that EH is still invoked after non-IO device errors to determine the nature of the error and resume command execution (some controller requires special care after error to continue). It just performs default maintenance after error, examines what's going on, realizes that it's none of its business and reports the command failure without logging any error messages. Signed-off-by:
Tejun Heo <htejun@gmail.com> Signed-off-by:
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Tejun Heo authored
libata EH always revalidated device and retried failed command after error except for ATAPI CCs. This is unnecessary and hinders with users issuing direct commands. This patch makes the following changes. * Make sata_sil24 not request ATA_EH_REVALIDATE on device errors. sil24 is the only driver which does this. All others let libata EH core code decide. * Don't request revalidation after device error of non-IO command. Revalidation doesn't really help anybody. As ATA_EH_REVALIDATE isn't set by default, there's no reason to clear it after sense data is read. Kill ATA_EH_REVALIDATE clearing code while at it. * Don't retry non-IO command after device error. Device has rejected the command. There's no point in retrying. Signed-off-by:
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