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* Merge tag 'davinci-for-v3.16/edma' of ↵Olof Johansson2014-05-268-198/+96Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers Merge "DaVinci EDMA clean-up for v3.16" from Sekhar Nori: This series makes edma use configuration information available within the IP instead of reading it from platform data or DT. Some other useful clean-ups are included too. * tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (34 commits) ARM: edma: Remove redundant/unused parameters from edma_soc_info ARM: davinci: Remove redundant/unused parameters for edma ARM: dts: am4372: Remove obsolete properties from edma node ARM: dts: am33xx: Remove obsolete properties from edma node dt/bindings: ti,edma: Remove redundant properties from documentation ARM: edma: Get IP configuration from HW (number of channels, tc, etc) ARM: edma: Save number of regions from pdata to struct edma ARM: edma: Remove num_cc member from struct edma ARM: edma: Remove queue_tc_mapping data from edma_soc_info ARM: davinci: Remove eDMA3 queue_tc_mapping data from edma_soc_info ARM: edma: Do not change TC -> Queue mapping, leave it to default. ARM: edma: Take the number of tc from edma_soc_info (pdata) ARM: edma: No need to clean the pdata in edma_of_parse_dt() ARM: edma: Clean up and simplify the code around irq request dmaengine: edma: update DMA memcpy to use new param element dmaengine: edma: Document variables used for residue accounting dmaengine: edma: Provide granular accounting dmaengine: edma: Make reading the position of active channels work dmaengine: edma: Store transfer data in edma_desc and edma_pset dmaengine: edma: Create private pset struct ... Signed-off-by: Olof Johansson <olof@lixom.net>
| * ARM: davinci: Remove redundant/unused parameters for edmaPeter Ujfalusi2014-05-225-35/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | The following parameters are no longer needed by the edma driver since the information can be obtained from the IP's CCCFG register: n_channel, n_region, n_slot and n_tc. Remove the initialization of n_cc as well since in this context it has no meaning. We have separate edma_soc_info struct/eDMA3_CC instance so this member does not make any sense (and the driver no longer uses it). Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: dts: am4372: Remove obsolete properties from edma nodePeter Ujfalusi2014-05-221-3/+0Star
| | | | | | | | | | | | | | | | | | dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since the the same information is available in the IP's CCCFG register. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: dts: am33xx: Remove obsolete properties from edma nodePeter Ujfalusi2014-05-221-3/+0Star
| | | | | | | | | | | | | | | | | | dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since the the same information is available in the IP's CCCFG register. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Get IP configuration from HW (number of channels, tc, etc)Peter Ujfalusi2014-05-221-42/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From CCCFG register of eDMA3 we can get all the needed information for the driver about the IP: Number of channels: NUM_DMACH Number of regions: NUM_REGN Number of slots (PaRAM sets): NUM_PAENTRY Number of TC/EQ: NUM_EVQUE In case when booted with DT or the queue_priority_mapping is not provided set up a default priority map. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Save number of regions from pdata to struct edmaPeter Ujfalusi2014-05-221-1/+2
| | | | | | | | | | | | | | | | To be consistent in the code that we take parameters from edma_cc[j] struct and not randomly from info[j] as well. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Remove num_cc member from struct edmaPeter Ujfalusi2014-05-221-4/+0Star
| | | | | | | | | | | | | | | | The struct edma is allocated per CC bases so the member num_cc does not make any sense. One CC is one CC, it does not have sub CCs. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: davinci: Remove eDMA3 queue_tc_mapping data from edma_soc_infoPeter Ujfalusi2014-05-225-56/+0Star
| | | | | | | | | | | | | | | | It is ignored by the edma driver since we are just setting back the default mapping of TC -> Queue. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Do not change TC -> Queue mapping, leave it to default.Peter Ujfalusi2014-05-221-27/+1Star
| | | | | | | | | | | | | | | | | | | | There is no need to change the default TC -> Queue mapping. By default the mapping is: TC0 -> Q0, TC1 -> Q1, etc. Changing this has no benefits at all and all the board files are just setting the same mapping back to the HW. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Take the number of tc from edma_soc_info (pdata)Peter Ujfalusi2014-05-221-3/+2Star
| | | | | | | | | | | | | | | | | | | | Instead of saving the for loop length, take the num_tc value from the pdata. In case of DT boot set the n_tc to 3 as it is hardwired in edma_of_parse_dt() This is a temporary state since upcoming patch(es) will change how we are dealing with these parameters. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: No need to clean the pdata in edma_of_parse_dt()Peter Ujfalusi2014-05-221-2/+0Star
| | | | | | | | | | | | | | | | The pdata has been just allocated with devm_kzalloc() in edma_setup_info_from_dt() and passed to this function. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * ARM: edma: Clean up and simplify the code around irq requestPeter Ujfalusi2014-05-221-14/+12Star
| | | | | | | | | | | | | | | | | | | | Get the two interrupt line number at the same time by merging the two instance of if(node){}else{} places. replace the &pdev->dev with the already existing dev which makes it possible to collapse lines with devm_request_irq() Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| * dmaengine: edma: Make reading the position of active channels workThomas Gleixner2014-04-301-15/+9Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Joel pointed out, edma_read_position() uses memcpy_fromio() to read the parameter ram. That's not synchronized with the internal update as it does a byte by byte copy. We need to do a 32bit read to get a consistent value. Further reading destination and source is pointless. In DEV_TO_MEM transfers we are only interested in the destination, in MEM_TO_DEV we care about the source. In MEM_TO_MEM it really does not matter which one you read. Simple solution: Remove the pointers, select dest/source via a bool and return the read value. Remove the export of this function while at it. The only potential user is the dmaengine and that's always builtin. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * dmaengine: edma: Set DMA_CYCLIC capability flagPeter Ujfalusi2014-04-221-0/+1
| | | | | | | | | | | | | | | | | | Indicate that the edma dmaengine driver has support for cyclic mode. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Joel Fernandes <joelf@ti.com> Reviewed-and-Tested-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * arm: common: edma: Save the number of event queues/TCsPeter Ujfalusi2014-04-221-0/+3
| | | | | | | | | | | | | | | | | | For later use save the number of queues available for the CC. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Joel Fernandes <joelf@ti.com> Reviewed-and-Tested-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | Merge tag 'davinci-fixes-for-v3.15-rc4' of ↵Olof Johansson2014-05-262-34/+16Star
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers The patch fixes EDMA crossbar mapping to actually make it work. The patch has been tagged for stable. * tag 'davinci-fixes-for-v3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: ARM: common: edma: Fix xbar mapping
| * | ARM: common: edma: Fix xbar mappingThomas Gleixner2014-04-292-34/+16Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is another great example of trainwreck engineering: commit 2646a0e529 (ARM: edma: Add EDMA crossbar event mux support) added support for using EDMA on peripherals which have no direct EDMA event mapping. The code compiles and does not explode in your face, but that's it. 1) Reading an u16 array from an u32 device tree array simply does not work. Even if the function is named "edma_of_read_u32_to_s16_array". It merily calls of_property_read_u16_array. So the resulting 16bit array will have every other entry = 0. 2) The DT entry for the xbar registers related to xbar has length 0x10 instead of the real length: 0xfd0 - 0xf90 = 0x40. Not a real problem as it does not cross a page boundary, but wrong nevertheless. 3) But none of this matters as the mapping never happens: After reading nonsense edma_of_read_u32_to_s16_array() invalidates the first array entry pair, so nobody can ever notice the braindamage by immediate explosion. Seems the QA criteria for this code was solely not to explode when someone adds edma-xbar-event-map entries to the DT. Goal achieved, congratulations! Not really helpful if someone wants to use edma on a device which requires a xbar mapping. Fix the issues by: - annotating the device tree entry with "/bits/ 16" as documented in the of_property_read_u16_array kernel doc - make the size of the xbar register mapping correct - invalidating the end of the array and not the start This convoluted mess wants to be completely rewritten as there is no point to keep the xbar_chan array memory and the iomapping of the xbar regs around forever. Marking the xbar mapped channels as used should be done right there. But that's a different issue and this patch is small enough to make it work and allows a simple backport for stable. Cc: stable@vger.kernel.org # v3.12+ Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
* | | Merge tag 'mvebu-drivers-3.16' of git://git.infradead.org/linux-mvebu into ↵Olof Johansson2014-05-201-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | next/drivers Merge "ARM: mvebu: driver changes for v3.16" from Jason Cooper: mvebu driver changes for v3.16 - mvebu-devbus - changes need to add support for the orion5x platform * tag 'mvebu-drivers-3.16' of git://git.infradead.org/linux-mvebu: memory: mvebu-devbus: add a devbus, keep-config property memory: mvebu-devbus: add Orion5x support memory: mvebu-devbus: split functions memory: mvebu-devbus: use _SHIFT suffixes instead of _BIT memory: mvebu-devbus: use ARMADA_ prefix in defines ARM: orion5x: fix target ID for crypto SRAM window memory: mvebu-devbus: fix the conversion of the bus width Signed-off-by: Olof Johansson <olof@lixom.net>
| * | | ARM: orion5x: fix target ID for crypto SRAM windowThomas Petazzoni2014-04-171-1/+1
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 4ca2c04085a1caa903e92a5fc0da25362150aac2 ('ARM: orion5x: Move to ID based window creation'), the mach-orion5x code was changed to use the new mvebu-mbus API. However, in the process, a mistake was made on the crypto SRAM window target ID: it should have been 0x9 (verified in the datasheet) and not 0x0. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Link: https://lkml.kernel.org/r/1397400006-4315-2-git-send-email-thomas.petazzoni@free-electrons.com Fixes: 4ca2c04085a1 ('ARM: orion5x: Move to ID based window creation') Cc: stable@vger.kernel.org # v3.12+ Signed-off-by: Jason Cooper <jason@lakedaemon.net>
* | | Merge tag 'arm64-fixes' of ↵Linus Torvalds2014-05-045-7/+42
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: "These are mostly arm64 fixes with an additional arm(64) platform fix for the initialisation of vexpress clocks (the latter only affecting arm64; the arch/arm64 code is SoC agnostic and does not rely on early SoC-specific calls) - vexpress platform clocks initialisation moved earlier following the arm64 move of of_clk_init() call in a previous commit - Default DMA ops changed to non-coherent to preserve compatibility with 32-bit ARM DT files. The "dma-coherent" property can be used to explicitly mark a device coherent. The Applied Micro DT file has been updated to avoid DMA cache maintenance for the X-Gene SATA controller (the only arm64 related driver with such assumption in -rc mainline) - Fixmap correction for earlyprintk - kern_addr_valid() fix for huge pages" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: vexpress: Initialise the sysregs before setting up the clocks arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent arm64: Use bus notifiers to set per-device coherent DMA ops arm64: Make default dma_ops to be noncoherent arm64: fixmap: fix missing sub-page offset for earlyprintk arm64: Fix for the arm64 kern_addr_valid() function
| * | | arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherentCatalin Marinas2014-05-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the default DMA ops for arm64 are non-coherent, mark the X-Gene controller explicitly as dma-coherent to avoid additional cache maintenance. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Loc Ho <lho@apm.com>
| * | | arm64: Use bus notifiers to set per-device coherent DMA opsCatalin Marinas2014-05-032-2/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recently, the default DMA ops have been changed to non-coherent for alignment with 32-bit ARM platforms (and DT files). This patch adds bus notifiers to be able to set the coherent DMA ops (with no cache maintenance) for devices explicitly marked as coherent via the "dma-coherent" DT property. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: Make default dma_ops to be noncoherentRitesh Harjani2014-05-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently arm64 dma_ops is by default made coherent which makes it opposite in default policy from arm. Make default dma_ops to be noncoherent (same as arm), as currently there aren't any dma-capable drivers which assumes coherent ops Signed-off-by: Ritesh Harjani <ritesh.harjani@gmail.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: fixmap: fix missing sub-page offset for earlyprintkMarc Zyngier2014-05-031-4/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d57c33c5daa4 (add generic fixmap.h) added (among other similar things) set_fixmap_io to deal with early ioremap of devices. More recently, commit bf4b558eba92 (arm64: add early_ioremap support) converted the arm64 earlyprintk to use set_fixmap_io. A side effect of this conversion is that my virtual machines have stopped booting when I pass "earlyprintk=uart8250-8bit,0x3f8" to the guest kernel. Turns out that the new earlyprintk code doesn't care at all about sub-page offsets, and just assumes that the earlyprintk device will be page-aligned. Obviously, that doesn't play well with the above example. Further investigation shows that set_fixmap_io uses __set_fixmap instead of __set_fixmap_offset. A fix is to introduce a set_fixmap_offset_io that uses the latter, and to remove the superflous call to fix_to_virt (which only returns the value that set_fixmap_io has already given us). With this applied, my VMs are back in business. Tested on a Cortex-A57 platform with kvmtool as platform emulation. Cc: Will Deacon <will.deacon@arm.com> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| * | | arm64: Fix for the arm64 kern_addr_valid() functionDave Anderson2014-05-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix for the arm64 kern_addr_valid() function to recognize virtual addresses in the kernel logical memory map. The function fails as written because it does not check whether the addresses in that region are mapped at the pmd level to 2MB or 512MB pages, continues the page table walk to the pte level, and issues a garbage value to pfn_valid(). Tested on 4K-page and 64K-page kernels. Signed-off-by: Dave Anderson <anderson@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | | | Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds2014-05-031-0/+5
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "This udpate delivers: - A fix for dynamic interrupt allocation on x86 which is required to exclude the GSI interrupts from the dynamic allocatable range. This was detected with the newfangled tablet SoCs which have GPIOs and therefor allocate a range of interrupts. The MSI allocations already excluded the GSI range, so we never noticed before. - The last missing set_irq_affinity() repair, which was delayed due to testing issues - A few bug fixes for the armada SoC interrupt controller - A memory allocation fix for the TI crossbar interrupt controller - A trivial kernel-doc warning fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: irq-crossbar: Not allocating enough memory irqchip: armanda: Sanitize set_irq_affinity() genirq: x86: Ensure that dynamic irq allocation does not conflict linux/interrupt.h: fix new kernel-doc warnings irqchip: armada-370-xp: Fix releasing of MSIs irqchip: armada-370-xp: implement the ->check_device() msi_chip operation irqchip: armada-370-xp: fix invalid cast of signed value into unsigned variable
| * | | | genirq: x86: Ensure that dynamic irq allocation does not conflictThomas Gleixner2014-04-281-0/+5
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86 the allocation of irq descriptors may allocate interrupts which are in the range of the GSI interrupts. That's wrong as those interrupts are hardwired and we don't have the irq domain translation like PPC. So one of these interrupts can be hooked up later to one of the devices which are hard wired to it and the io_apic init code for that particular interrupt line happily reuses that descriptor with a completely different configuration so hell breaks lose. Inside x86 we allocate dynamic interrupts from above nr_gsi_irqs, except for a few usage sites which have not yet blown up in our face for whatever reason. But for drivers which need an irq range, like the GPIO drivers, we have no limit in place and we don't want to expose such a detail to a driver. To cure this introduce a function which an architecture can implement to impose a lower bound on the dynamic interrupt allocations. Implement it for x86 and set the lower bound to nr_gsi_irqs, which is the end of the hardwired interrupt space, so all dynamic allocations happen above. That not only allows the GPIO driver to work sanely, it also protects the bogus callsites of create_irq_nr() in hpet, uv, irq_remapping and htirq code. They need to be cleaned up as well, but that's a separate issue. Reported-by: Jin Yao <yao.jin@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Mathias Nyman <mathias.nyman@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Krogerus Heikki <heikki.krogerus@intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1404241617360.28206@ionos.tec.linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2014-05-022-2/+13
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Peter Anvin: "Two very small changes: one fix for the vSMP Foundation platform, and one to help LLVM not choke on options it doesn't understand (although it probably should)" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vsmp: Fix irq routing x86: LLVMLinux: Wrap -mno-80387 with cc-option
| * | | | x86/vsmp: Fix irq routingOren Twaig2014-04-281-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct IRQ routing in case a vSMP box is detected but the Interrupt Routing Comply (IRC) value is set to "comply", which leads to incorrect IRQ routing. Before the patch: When a vSMP box was detected and IRC was set to "comply", users (and the kernel) couldn't effectively set the destination of the IRQs. This is because the hook inside vsmp_64.c always setup all CPUs as the IRQ destination using cpumask_setall() as the return value for IRQ allocation mask. Later, this "overrided" mask caused the kernel to set the IRQ destination to the lowest online CPU in the mask (CPU0 usually). After the patch: When the IRC is set to "comply", users (and the kernel) can control the destination of the IRQs as we will not be changing the default "apic->vector_allocation_domain". Signed-off-by: Oren Twaig <oren@scalemp.com> Acked-by: Shai Fultheim <shai@scalemp.com> Link: http://lkml.kernel.org/r/1398669697-2123-1-git-send-email-oren@scalemp.com [ Minor readability edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86: LLVMLinux: Wrap -mno-80387 with cc-optionBehan Webster2014-04-221-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wrap -mno-80387 gcc options with cc-option so they don't break clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Cc: torvalds@linux-foundation.org Cc: dwmw2@infradead.org Cc: pageexec@freemail.hu Link: http://lkml.kernel.org/r/1398145227-25053-1-git-send-email-behanw@converseincode.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2014-05-023-19/+51
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM fixes from Paolo Bonzini: - Fix for a Haswell regression in nested virtualization, introduced during the merge window. - A fix from Oleg to async page faults. - A bunch of small ARM changes. - A trivial patch to use the new MSI-X API introduced during the merge window. * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: ARM: vgic: Fix the overlap check action about setting the GICD & GICC base address. KVM: arm/arm64: vgic: fix GICD_ICFGR register accesses KVM: async_pf: mm->mm_users can not pin apf->mm KVM: ARM: vgic: Fix sgi dispatch problem MAINTAINERS: co-maintainance of KVM/{arm,arm64} arm: KVM: fix possible misalignment of PGDs and bounce page KVM: x86: Check for host supported fields in shadow vmcs kvm: Use pci_enable_msix_exact() instead of pci_enable_msix() ARM: KVM: disable KVM in Kconfig on big-endian systems
| * \ \ \ \ Merge tag 'kvm-arm-for-3.15-rc4' of ↵Paolo Bonzini2014-04-302-7/+10
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master First round of KVM/ARM Fixes for 3.15 Includes vgic fixes, a possible kernel corruption bug due to misalignment of pages and disabling of KVM in KConfig on big-endian systems, because the last one breaks the build.
| | * | | | | arm: KVM: fix possible misalignment of PGDs and bounce pageMark Salter2014-04-281-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kvm/mmu code shared by arm and arm64 uses kalloc() to allocate a bounce page (if hypervisor init code crosses page boundary) and hypervisor PGDs. The problem is that kalloc() does not guarantee the proper alignment. In the case of the bounce page, the page sized buffer allocated may also cross a page boundary negating the purpose and leading to a hang during kvm initialization. Likewise the PGDs allocated may not meet the minimum alignment requirements of the underlying MMU. This patch uses __get_free_page() to guarantee the worst case alignment needs of the bounce page and PGDs on both arm and arm64. Cc: <stable@vger.kernel.org> # 3.10+ Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | | | ARM: KVM: disable KVM in Kconfig on big-endian systemsWill Deacon2014-04-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM currently crashes and burns on big-endian hosts, so don't allow it to be selected until we've got that fixed. Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * | | | | | KVM: x86: Check for host supported fields in shadow vmcsBandan Das2014-04-281-12/+41
| |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We track shadow vmcs fields through two static lists, one for read only and another for r/w fields. However, with addition of new vmcs fields, not all fields may be supported on all hosts. If so, copy_vmcs12_to_shadow() trying to vmwrite on unsupported hosts will result in a vmwrite error. For example, commit 36be0b9deb23161 introduced GUEST_BNDCFGS, which is not supported by all processors. Filter out host unsupported fields before letting guests use shadow vmcs Signed-off-by: Bandan Das <bsd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2014-05-021-1/+0Star
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Two bug fixes, one to fix a potential information leak in the BPF jit and common-io-layer fix for old firmware levels" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSH s390/chsc: fix SEI usage on old FW levels
| * | | | | | s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSHMartin Schwidefsky2014-04-251-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The A register needs to be initialized to zero in the prolog if the first instruction of the BPF program is BPF_S_LDX_B_MSH to prevent leaking the content of %r5 to user space. Cc: <stable@vger.kernel.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | | | | Merge branch 'parisc-3.15-3' of ↵Linus Torvalds2014-05-022-8/+2Star
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc fixes from Helge Deller: "Drop the architecture-specifc value for_STK_LIM_MAX to fix stack related problems with GNU make" * 'parisc-3.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Use generic uapi/asm/resource.h file parisc: remove _STK_LIM_MAX override
| * | | | | | | parisc: Use generic uapi/asm/resource.h fileHelge Deller2014-05-012-7/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Helge Deller <deller@gmx.de>
| * | | | | | | parisc: remove _STK_LIM_MAX overrideJohn David Anglin2014-05-011-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are only a couple of architectures that override _STK_LIM_MAX to a non-infinity value. This changes the stack allocation semantics in subtle ways. For example, GNU make changes its stack allocation to the hard maximum defined by _STK_LIM_MAX. As a results, threads executed by processes running under make are allocated a stack size of _STK_LIM_MAX rather than a sensible default value. This causes various thread stress tests to fail when they can't muster more than about 50 threads. The attached change implements the default behavior used by the majority of architectures. Signed-off-by: John David Anglin <dave.anglin@bell.net> Reviewed-by: Carlos O'Donell <carlos@systemhalted.org> Cc: stable@vger.kernel.org # 3.14 Signed-off-by: Helge Deller <deller@gmx.de>
* | | | | | | | Hexagon: Delete stale barrier.hVineet Gupta2014-05-011-37/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 93ea02bb8435 ("arch: Clean up asm/barrier.h implementations") wired generic barrier.h for hexagon, but failed to delete the existing file. Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Compile-tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2014-05-011-1/+2
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, plus an Intel RAPL PMU driver fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tests x86: Fix stack map lookup in dwarf unwind test perf x86: Fix perf to use non-executable stack, again perf tools: Remove extra '/' character in events file path perf machine: Search for modules in %s/lib/modules/%s perf tests: Add static build make test perf tools: Fix bfd dependency libraries detection perf tools: Use LDFLAGS instead of ALL_LDFLAGS perf/x86: Fix RAPL rdmsrl_safe() usage tools lib traceevent: Fix memory leak in pretty_print() tools lib traceevent: Fix backward compatibility macros for pevent filter enums perf tools: Disable libdw unwind for all but x86 arch perf tests x86: Fix memory leak in sample_ustack()
| * | | | | | | | perf/x86: Fix RAPL rdmsrl_safe() usageStephane Eranian2014-04-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a bug introduced by: 24223657806a ("perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU") The rdmsrl_safe() function returns 0 on success. The current code was failing to detect the RAPL PMU on real hardware (missing /sys/devices/power) because the return value of rdmsrl_safe() was misinterpreted. Signed-off-by: Stephane Eranian <eranian@google.com> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Venkatesh Srinivas <venkateshs@google.com> Cc: peterz@infradead.org Cc: zheng.z.yan@intel.com Link: http://lkml.kernel.org/r/20140423170418.GA12767@quad Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | | | | | | ARC: !PREEMPT: Ensure Return to kernel mode is IRQ safeVineet Gupta2014-04-301-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a very small race window where resume to kernel mode from a Exception Path (or pure kernel mode which is true for most of ARC exceptions anyways), was not disabling interrupts in restore_regs, clobbering the exception regs Anton found the culprit call flow (after many sleepless nights) | 1. we got a Trap from user land | 2. started to service it. | 3. While doing some stuff on user-land memory (I think it is padzero()), | we got a DataTlbMiss | 4. On return from it we are taking "resume_kernel_mode" path | 5. NEED_RESHED is not set, so we go to "return from exception" path in | restore regs. | 6. there seems to be IRQ happening Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.13, 3.14 Cc: Anton Kolesov <Anton.Kolesov@synopsys.com> Cc: Francois Bedard <Francois.Bedard@synopsys.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | | | | Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds2014-04-294-14/+14
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull devicetree bug fixes from Grant Likely: "These are some important bug fixes that need to get into v3.15. This branch contains a pair of important bug fixes for the DT code: - Fix some incorrect binding property names before they enter common usage - Fix bug where some platform devices will be unable to get their interrupt number when they depend on an interrupt controller that is not available at device creation time. This is a problem causing mainline to fail on a number of ARM platforms" * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: of/irq: do irq resolution in platform_get_irq of: selftest: add deferred probe interrupt test dt: Fix binding typos in clock-names and interrupt-names
| * | | | | | | | | dt: Fix binding typos in clock-names and interrupt-namesGeert Uytterhoeven2014-04-234-14/+14
| | |_|_|_|_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | s/interrupts-names/interrupt-names/g s/clocks-names/clock-names/g Some of the binding files and device tree files get this wrong and the kernel won't be able to pick it up. Fix them up now so that they don't get widely used. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by : Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* | | | | | | | | Merge branch 'merge' of ↵Linus Torvalds2014-04-2822-285/+273Star
|\ \ \ \ \ \ \ \ \ | |_|_|_|_|_|_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Ben Herrenschmidt: "Here is a bunch of post-merge window fixes that have been accumulating in patchwork while I was on vacation or buried under other stuff last week. We have the now usual batch of LE fixes from Anton (sadly some new stuff that went into this merge window had endian issues, we'll try to make sure we do better next time) Some fixes and cleanups to the new 24x7 performance monitoring stuff (mostly typos and cleaning up printk's) A series of fixes for an issue with our runlatch bit, which wasn't set properly for offlined threads/cores and under KVM, causing potentially some counters to misbehave along with possible power management issues. A fix for kexec nasty race where the new kernel wouldn't "see" the secondary processors having reached back into firmware in time. And finally a few other misc (and pretty simple) bug fixes" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (33 commits) powerpc/4xx: Fix section mismatch in ppc4xx_pci.c ppc/kvm: Clear the runlatch bit of a vcpu before napping ppc/kvm: Set the runlatch bit of a CPU just before starting guest ppc/powernv: Set the runlatch bits correctly for offline cpus powerpc/pseries: Protect remove_memory() with device hotplug lock powerpc: Fix error return in rtas_flash module init powerpc: Bump BOOT_COMMAND_LINE_SIZE to 2048 powerpc: Bump COMMAND_LINE_SIZE to 2048 powerpc: Rename duplicate COMMAND_LINE_SIZE define powerpc/perf/hv-24x7: Catalog version number is be64, not be32 powerpc/perf/hv-24x7: Remove [static 4096], sparse chokes on it powerpc/perf/hv-24x7: Use (unsigned long) not (u32) values when calling plpar_hcall_norets() powerpc/perf/hv-gpci: Make device attr static powerpc/perf/hv_gpci: Probe failures use pr_debug(), and padding reduced powerpc/perf/hv_24x7: Probe errors changed to pr_debug(), padding fixed powerpc/mm: Fix tlbie to add AVAL fields for 64K pages powerpc/powernv: Fix little endian issues in OPAL dump code powerpc/powernv: Create OPAL sglist helper functions and fix endian issues powerpc/powernv: Fix little endian issues in OPAL error log code powerpc/powernv: Fix little endian issues with opal_do_notifier calls ...
| * | | | | | | | powerpc/4xx: Fix section mismatch in ppc4xx_pci.cAlistair Popple2014-04-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes this section mismatch: WARNING: vmlinux.o(.text+0x1efc4): Section mismatch in reference from the function apm821xx_pciex_init_port_hw() to the function .init.text:ppc4xx_pciex_wait_on_sdr.isra.9() The function apm821xx_pciex_init_port_hw() references the function __init ppc4xx_pciex_wait_on_sdr.isra.9(). This is often because apm821xx_pciex_init_port_hw lacks a __init annotation or the annotation of ppc4xx_pciex_wait_on_sdr.isra.9 is wrong. apm821xx_pciex_init_port_hw is only referenced by a struct in __initdata, so it should be safe to add __init to apm821xx_pciex_init_port_hw. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | ppc/kvm: Clear the runlatch bit of a vcpu before nappingPreeti U Murthy2014-04-281-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the guest cedes the vcpu or the vcpu has no guest to run it naps. Clear the runlatch bit of the vcpu before napping to indicate an idle cpu. Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | | | | | ppc/kvm: Set the runlatch bit of a CPU just before starting guestPreeti U Murthy2014-04-281-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The secondary threads in the core are kept offline before launching guests in kvm on powerpc: "371fefd6f2dc4666:KVM: PPC: Allow book3s_hv guests to use SMT processor modes." Hence their runlatch bits are cleared. When the secondary threads are called in to start a guest, their runlatch bits need to be set to indicate that they are busy. The primary thread has its runlatch bit set though, but there is no harm in setting this bit once again. Hence set the runlatch bit for all threads before they start guest. Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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