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2008-12-03powerpc/85xx: Don't reset the MPIC for CAMP mode on MPC8572DSHaiying Wang
The flag MPIC_WANTS_RESET shouldn't be set if we are doing cooperative asymmetric MP. The second linux shouldn't reset the pic or the first one gets very confused. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Add localbus node in mpc8572ds dts fileHaiying Wang
Also add NOR and NAND flash partitions for mpc8572ds board Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/86xx: Basic GPIO support for GE Fanuc SBC610Martyn Welch
Basic support for the GPIO available on the SBC610 VPX Single Board Computer from GE Fanuc (PowerPC MPC8641D). This patch adds basic support for the GPIO in the devices I/O FPGA, the GPIO functionality is exposed through the AFIX pins on the backplane, unless used by an AFIX card. This code currently does not support switching between totem-pole and open-drain outputs (when used as outputs, GPIOs default to totem-pole). The interrupt capabilites of the GPIO lines is also not currently supported. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/qe: Move cmxgcr_lock definition from the ucc.c into the qe.cAnton Vorontsov
With this patch we can compile the qe_lib/usb.c without the UCC support (that is, without UCC_GETH and/or SERIAL_QE). Fixes following link error (CONFIG_SMP should be =y to trigger this): arch/powerpc/sysdev/built-in.o: In function `qe_usb_clock_set': (.text+0x3cae): undefined reference to `cmxgcr_lock' make: *** [.tmp_vmlinux1] Error 1 While at it, also add missing spinlock.h includes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-By: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/86xx: Add use of Epson RTX-8581 RTC to GE Fanuc SBC610 dtsMartyn Welch
Adding use of newly added Epson RTX-8581 real-time clock driver to GE Fanuc SBC610's dts file and adding driver to default config. Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: Fix compile warnings in mpc85xx_mds.cKumar Gala
arch/powerpc/platforms/85xx/mpc85xx_mds.c: In function 'board_fixups': arch/powerpc/platforms/85xx/mpc85xx_mds.c:244: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' arch/powerpc/platforms/85xx/mpc85xx_mds.c:250: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t' Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03x86/oprofile: fix Intel cpu family 6 detectionWilliam Cohen
Alan Jenkins wrote: > This is on an EeePC 701, /proc/cpuinfo as attached. > > Is this expected? Will the next release work? > > Thanks, Alan > > # opcontrol --setup --no-vmlinux > cpu_type 'unset' is not valid > you should upgrade oprofile or force the use of timer mode > > # opcontrol -v > opcontrol: oprofile 0.9.4 compiled on Nov 29 2008 22:44:10 > > # cat /dev/oprofile/cpu_type > i386/p6 > # uname -r > 2.6.28-rc6eeepc Hi Alan, Looking at the kernel driver code for oprofile it can return the "i386/p6" for the cpu_type. However, looking at the user-space oprofile code there isn't the matching entry in libop/op_cpu_type.c or the events/unit_mask files in events/i386 directory. The Intel AP-485 says this is a "Intel Pentium M processor model D". Seems like the oprofile kernel driver should be identifying the processor as "i386/p6_mobile" The driver identification code doesn't look quite right in nmi_init.c http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git;a=blob;f=arch/x86/oprofile/nmi_int.c;h=022cd41ea9b4106e5884277096e80e9088a7c7a9;hb=HEAD has: 409 case 10 ... 13: 410 *cpu_type = "i386/p6"; 411 break; Referring to the Intel AP-485: case 10 and 11 should produce "i386/piii" case 13 should produce "i386/p6_mobile" I didn't see anything for case 12. Something like the attached patch. I don't have a celeron machine to verify that changes in this area of the kernel fix thing. -Will Signed-off-by: William Cohen <wcohen@redhat.com> Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
2008-12-03powerpc/83xx: Fix MCU support merge issue in mpc8349emitx.dtsAnton Vorontsov
Just found the merge issue in 442746989d92afc125040e0f29b33602ad94da99 ("powerpc/83xx: Add support for MCU microcontroller in .dts files"): the commit adds the MCU controller node into the DMA node, which is wrong because the MCU sits on the I2C bus. Fix this by moving the MCU node into the I2C controller node. The original patch[1] was OK though. ;-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03oprofile: fix CPU unplug panic in ppro_stop()Eric Dumazet
If oprofile statically compiled in kernel, a cpu unplug triggers a panic in ppro_stop(), because a NULL pointer is dereferenced. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
2008-12-03powerpc/85xx: Add support for SMP initializationKumar Gala
Added 85xx specifc smp_ops structure. We use ePAPR style boot release and the MPIC for IPIs at this point. Additionally added routines for secondary cpu entry and initializtion. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/85xx: minor head_fsl_booke.S cleanupKumar Gala
Removed unused branch labels Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Better setup of boot page TLB entryTrent Piepho
The initial TLB mapping for the kernel boot didn't set the memory coherent attribute, MAS2[M], in SMP mode. If this code supported booting a secondary processor, which it doesn't yet, but if it did, then when a secondary processor boots, it would probably signal the primary processor by setting a variable called something like __secondary_hold_acknowledge. However, due to the lack of the M bit, the primary processor would not snoop the transaction (even if a transaction were broadcast). If primary CPU's L1 D-cache had a copy, it would not be flushed and the CPU would never see the ack. Which would have resulted in the primary CPU spinning for a long time, perhaps a full second before it gives up, while it would have waited for the ack from the secondary CPU that it wouldn't have been able to see because of the stale cache. The value of MAS2 for the boot page TLB1 entry is a compile time constant, so there is no need to calculate it in powerpc assembly language. Also, from the MPC8572 manual section 6.12.5.3, "Bits that represent offsets within a page are ignored and should be cleared." Existing code didn't clear them, this code does. The same when the page of KERNELBASE is found; we don't need to use asm to mask the lower 12 bits off. In the code that computes the address to rfi from, don't hard code the offset to 24 bytes, but have the assembler figure that out for us. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Add SPE/EFP math emulation for E500v1/v2 processors.Liu Yu
This patch add the handlers of SPE/EFP exceptions. The code is used to emulate float point arithmetic, when MSR(SPE) is enabled and receive EFP data interrupt or EFP round interrupt. This patch has no conflict with or dependence on FP math-emu. The code has been tested by TestFloat. Now the code doesn't support SPE/EFP instructions emulation (it won't be called when receive program interrupt), but it could be easily added. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Remove redundant 'ret'Liu Yu
FP_DECL_EX is already used, so ret is redundant. And FP_SET_EXCEPTION will add status into return value. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Adopt new version of _FP_CHOOSENANLiu Yu
Move to using the same macro definition for _FP_CHOOSENAN as s390, sh, sparc32/64. The original author didn't understand this and matched what sparc64 was doing and they have updated to this definition. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc/math-emu: Fix single float point division bugLiu Yu
PowerPC float point division emulation is derived from gcc. I reported this problem on gcc maillist and got this reply: http://gcc.gnu.org/ml/gcc/2008-03/msg00543.html Since UDIV_NEEDS_NORMALIZATION is not used by kernel, we should use _FP_DIV_MEAT_1_udiv_norm to make sure the single float point is normalized before udiv_qrnnd. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03powerpc: Remove unncessary SPE related compiler flagKumar Gala
After testing of various compiler flag combinations by Nate Case it was determined that -mabi=no-spe has no impact on the compiler generating SPE instructions. Only -mno-spe and -mspe=no do. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-12-03block: fix setting of max_segment_size and seg_boundary maskMilan Broz
Fix setting of max_segment_size and seg_boundary mask for stacked md/dm devices. When stacking devices (LVM over MD over SCSI) some of the request queue parameters are not set up correctly in some cases by default, namely max_segment_size and and seg_boundary mask. If you create MD device over SCSI, these attributes are zeroed. Problem become when there is over this mapping next device-mapper mapping - queue attributes are set in DM this way: request_queue max_segment_size seg_boundary_mask SCSI 65536 0xffffffff MD RAID1 0 0 LVM 65536 -1 (64bit) Unfortunately bio_add_page (resp. bio_phys_segments) calculates number of physical segments according to these parameters. During the generic_make_request() is segment cout recalculated and can increase bio->bi_phys_segments count over the allowed limit. (After bio_clone() in stack operation.) Thi is specially problem in CCISS driver, where it produce OOPS here BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); (MAXSEGENTRIES is 31 by default.) Sometimes even this command is enough to cause oops: dd iflag=direct if=/dev/<vg>/<lv> of=/dev/null bs=128000 count=10 This command generates bios with 250 sectors, allocated in 32 4k-pages (last page uses only 1024 bytes). For LVM layer, it allocates bio with 31 segments (still OK for CCISS), unfortunatelly on lower layer it is recalculated to 32 segments and this violates CCISS restriction and triggers BUG_ON(). The patch tries to fix it by: * initializing attributes above in queue request constructor blk_queue_make_request() * make sure that blk_queue_stack_limits() inherits setting (DM uses its own function to set the limits because it blk_queue_stack_limits() was introduced later. It should probably switch to use generic stack limit function too.) * sets the default seg_boundary value in one place (blkdev.h) * use this mask as default in DM (instead of -1, which differs in 64bit) Bugs related to this: https://bugzilla.redhat.com/show_bug.cgi?id=471639 http://bugzilla.kernel.org/show_bug.cgi?id=8672 Signed-off-by: Milan Broz <mbroz@redhat.com> Reviewed-by: Alasdair G Kergon <agk@redhat.com> Cc: Neil Brown <neilb@suse.de> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Tejun Heo <htejun@gmail.com> Cc: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-03Merge branch 'iommu-fixes-2.6.28' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2008-12-03block: internal dequeue shouldn't start timerTejun Heo
blkdev_dequeue_request() and elv_dequeue_request() are equivalent and both start the timeout timer. Barrier code dequeues the original barrier request but doesn't passes the request itself to lower level driver, only broken down proxy requests; however, as the original barrier code goes through the same dequeue path and timeout timer is started on it. If barrier sequence takes long enough, this timer expires but the low level driver has no idea about this request and oops follows. Timeout timer shouldn't have been started on the original barrier request as it never goes through actual IO. This patch unexports elv_dequeue_request(), which has no external user anyway, and makes it operate on elevator proper w/o adding the timer and make blkdev_dequeue_request() call elv_dequeue_request() and add timer. Internal users which don't pass the request to driver - barrier code and end_that_request_last() - are converted to use elv_dequeue_request(). Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-03block: set disk->node_id before it's being usedCheng Renquan
disk->node_id will be refered in allocating in disk_expand_part_tbl, so we should set it before disk->node_id is refered. Signed-off-by: Cheng Renquan <crquan@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-03When block layer fails to map iov, it calls bio_unmap_user to undoPetr Vandrovec
mapping. Which is good if pages were mapped - but if they were provided by someone else and just copied then bad things happen - pages are released once here, and once by caller, leading to user triggerable BUG at include/linux/mm.h:246. Signed-off-by: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-03AMD IOMMU: fix possible race while accessing iommu->need_syncJoerg Roedel
The access to the iommu->need_sync member needs to be protected by the iommu->lock. Otherwise this is a possible race condition. Fix it with this patch. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-12-03AMD IOMMU: set device table entry for aliased devicesJoerg Roedel
In some rare cases a request can arrive an IOMMU with its originial requestor id even it is aliased. Handle this by setting the device table entry to the same protection domain for the original and the aliased requestor id. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-12-03AMD IOMMU: struct amd_iommu remove padding on 64 bitRichard Kennedy
Remove 16 bytes of padding from struct amd_iommu on 64bit builds reducing its size to 120 bytes, allowing it to span one fewer cachelines. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-12-03[MTD] [NAND] fix OOPS accessing flash operations over STM flash on PXADenis V. Lunev
STM 2Gb flash is a large-page NAND flash. Set operations accordingly. This field is dereferenced without a check in several places resulting in OOPS. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Eric Miao <ymiao3@marvell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-12-03hvc_console: Always schedule resize work on resizeHendrik Brueckner
The test to check for a new winsize runs out-of-sync with the underlying tty. After a tty has been released and initialized again, the winsize might differ between the tty and the hp struct. The solution is to simply remove the check and always schedule the resize work. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Make open count variables signed in hvcs/hvsi/hvc_consoleroel kluin
Otherwise the tests for count < 0 will never be true. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03drivers/hvc: Add missing of_node_putNicolas Palix
of_node_put is needed before discarding a value received from of_find_node_by_name, e.g., in error handling code or when the device node is no longer used. The semantic match that catches the bug is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression struct device_node *n; position p1, p2; statement S1,S2; expression E,E1; expression *ptr != NULL; @@ ( if (!(n@p1 = of_find_node_by_name(...))) S1 | n@p1 = of_find_node_by_name(...) ) <... when != of_node_put(n) when != if (...) { <+... of_node_put(n) ...+> } when != true !n || ... when != n = E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | return@p2 ...; | n = E1 | E1 = n ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03of/gpio: Implement of_get_gpio_flags()Anton Vorontsov
This adds a new function, of_get_gpio_flags, which is like of_get_gpio(), but accepts a new "flags" argument. This new function will be used by the drivers that need to retrieve additional GPIO information, such as active-low flag. Also, this changes the default ("simple") .xlate routine to warn about bogus (< 2) #gpio-cells usage: the second cell should always be present for GPIO flags. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc/macintosh: Fix unsigned check in smu_sat_get_sdb_partition()roel kluin
i2c_smbus_read_word_data() returns a s32, which may be negative but unsigned len cannot be negative. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03of/i2c: Fill the archdata for I2C devicesAnton Vorontsov
For I2C devices we just setting the node pointer in the archdata. This is needed so that the I2C devices could find their OF tree nodes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc and sparc: Introduce dev_archdata node accessorsAnton Vorontsov
The name of the device_node field differ across the platforms, so we have to implement inlined accessors. This is needed to avoid ugly #ifdef in the generic code. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc/BSR: Support multiple OF-node description of BSRSonny Rao
This adds support for multiple BSR nodes in the OF device tree. Previously, the BSR driver only supported a single OF node describing a BSR. Apparently when an LPAR is set to use "all system resources" the BSR appears as a single node, but when it is handed out in pieces, each 8 byte piece gets its own node. So, this keeps a list of BSR devices instead of the array and includes all nodes. Also, this makes the code be more inclusive of what BSR devices we accept by only checking compatibility and not the device name property (which might change in the future versions of BSR). Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc/ibmebus: Get rid of the IRQ mapping in ibmebus_free_irq()Sebastien Dugue
ibmebus_free_irq() frees the IRQ but does not remove its mapping, which results in stale entries in the map. This fixes it by adding a call to irq_dispose_mapping() in ibmebus_free_irq(). Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Eliminate NULL test and memset after alloc_bootmemJulia Lawall
As noted by Akinobu Mita in commit b1fceac2 ("x86: remove unnecessary memset and NULL check after alloc_bootmem()"), alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. This was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; statement S; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E ( - BUG_ON (E == NULL); | - if (E == NULL) S ) @@ expression E,E1; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\|alloc_bootmem_node\|alloc_bootmem_low_pages_node\|alloc_bootmem_pages_node\)(...) ... when != E - memset(E,0,E1); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add sync_*_for_* to dma_opsBecky Bruce
We need to swap these out once we start using swiotlb, so add them to dma_ops. Create CONFIG_PPC_NEED_DMA_SYNC_OPS Kconfig option; this is currently enabled automatically if we're CONFIG_NOT_COHERENT_CACHE. In the future, this will also be enabled for builds that need swiotlb. If PPC_NEED_DMA_SYNC_OPS is not defined, the dma_sync_*_for_* ops compile to nothing. Otherwise, they access the dma_ops pointers for the sync ops. This patch also changes dma_sync_single_range_* to actually sync the range - previously it was using a generous dma_sync_single. dma_sync_single_* is now implemented as a dma_sync_single_range with an offset of 0. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Allow the max stack trace depth to be configuredJohannes Berg
On my screen, when something crashes, I only have space for maybe 16 functions of the stack trace before the information above it scrolls off the screen. It's easy to hack the kernel to print out only that much, but it's harder to remember to do it. This introduces a config option for it so that I can keep the setting in my config. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Use RCU based pte freeing mechanism for all powerpcKumar Gala
Refactor the RCU based pte free code that was used on ppc64 to be used on all powerpc. Additionally refactor pte_free() & pte_free_kernel() into common code between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add a local_flush_tlb_page to handle kmap_atomic invalidatesKumar Gala
The tlb invalidates in kmap_atomic/kunmap_atomic can be called from IRQ context, however they are only local invalidates (on the processor that the kmap was called on). In the future we want to use IPIs to do tlb invalidates this causes issue since flush_tlb_page() is considered a broadcast invalidate. Add local_flush_tlb_page() as a non-broadcast invalidate and use it in kmap_atomic() since we don't have enough information in the flush_tlb_page() call to determine its local. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: hash_page_sync should only be used on SMP & STD_MMU_32Kumar Gala
Clean up the ifdefs so we only use hash_page_sync if we have CONFIG_SMP && CONFIG_PPC_STD_MMU_32. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Fix ppc32 mm_struct CPU tracking in SMPBenjamin Herrenschmidt
The 32-bit hash code didn't need it so far so we don't update mm->cpu_vm_mask on context switch. This however will break when we merge the RCU based page table freeing patch and other upcoming 32-bit embedded SMP work, so this adds the update. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03powerpc: Add MSR[CE, DE] to the MSR bits we print on show_regs()Kumar Gala
Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0Roel Kluin
Impact: fix warnings-limit cutoff check for debug feature unsigned sysctl_hung_task_warnings cannot be less than 0 Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-03Merge branch 'merge'Paul Mackerras
2008-12-03x86: fix broken flushing in GART nofullflush pathJoerg Roedel
Impact: remove stale IOTLB entries In the non-default nofullflush case the GART is only flushed when next_bit wraps around. But it can happen that an unmap operation unmaps memory which is behind the current next_bit location. If these addresses are reused it may result in stale GART IO/TLB entries. Fix this by setting the GART next_bit always behind an unmapped location. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-03sparc64: Fix bug in PTRACE_SETFPREGS64 handling.Chris Torek
From: Chris Torek <chris.torek@windriver.com> >The SPARC64 kernel code for PTRACE_SETFPREGS64 appears to be an exact copy >of that for PTRACE_GETFPREGS64. This means that gdbserver and native >64-bit GDB cannot set floating-point registers. It looks like a simple typo. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03netlabel: Fix a potential NULL pointer dereferencePaul Moore
Fix a potential NULL pointer dereference seen when trying to remove a static label configuration with an invalid address/mask combination. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03bnx2: Add workaround to handle missed MSI.Michael Chan
The bnx2 chips do not support per MSI vector masking. On 5706/5708, new MSI address/data are stored only when the MSI enable bit is toggled. As a result, SMP affinity no longer works in the latest kernel. A more serious problem is that the driver will no longer receive interrupts when the MSI receiving CPU goes offline. The workaround in this patch only addresses the problem of CPU going offline. When that happens, the driver's timer function will detect that it is making no forward progress on pending interrupt events and will recover from it. Eric Dumazet reported the problem. We also found that if an interrupt is internally asserted while MSI and INTA are disabled, the chip will end up in the same state after MSI is re-enabled. The same workaround is needed for this problem. Signed-off-by: Michael Chan <mchan@broadcom.com> Tested-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03xfrm: Fix kernel panic when flush and dump SPD entriesWei Yongjun
After flush the SPD entries, dump the SPD entries will cause kernel painc. Used the following commands to reproduct: - echo 'spdflush;' | setkey -c - echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64 any -P out ipsec \ ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\ spddump;' | setkey -c - echo 'spdflush; spddump;' | setkey -c - echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64 any -P out ipsec \ ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\ spddump;' | setkey -c This is because when flush the SPD entries, the SPD entry is not remove from the list. This patch fix the problem by remove the SPD entry from the list. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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