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2014-09-22IB/iser: Bump version to 1.4.1Or Gerlitz
Signed-off-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22IB/iser: Allow bind only when connection state is UPSagi Grimberg
We need to fail the bind operation if the iser connection state != UP (started teardown) and this should be done under the state lock. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22IB/iser: Fix RX/TX CQ resource leak on error flowRoi Dayan
When failing to allocate TX CQ we already allocated RX CQ, so we need to make sure we release it. Also, when failing to register notification to the RX CQ we currently leak both RX and TX CQs of the current index, fix that too. Signed-off-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22RDMA/ocrdma: Use right macro in query AHdevesh.sharma@emulex.com
ocrdma_query_ah() does not use correct macro, and checks the wrong bit for the validity of address handle in vector table. Fix this. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22RDMA/ocrdma: Resolve L2 address when creating user AHdevesh.sharma@emulex.com
Because of IP-based GIDs, userspace AHs must have MAC and VLAN ID resolved separately. Presently, user AHs are broken for ocrdma. This patch resolves L2 addresses while creating user AH and obtains the right DMAC and VLAN ID before creating AH. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22mlx4: Correct error flows in rereg_mrMatan Barak
This patch addresses feedback from Sagi Grimberg on the rereg_mr implementation of mlx4. The following are fixed: 1. Set the correct pd_flags 2. Make sure we change the iova and size MR fields only after successful write and allocation of the MTTs. 3. Make the error checking more robust Fixes: e630664c8383 ("mlx4_core: Add helper functions to support MR re-registration") Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-09-22Merge branch 'for-3.17-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue fix from Tejun Heo: "create_singlethread_workqueue() is the old interface which is kept around for backward compatibility - each should be reviewed to determine whether singlethread usage was to save worker threads or for ordering guarantee and whether it's depended upon by memory reclaim path. While adding NUMA support for unbound workqueues during v3.10, I forgot to update it breaking the singlethread and ordering properties on NUMA setups. The breakage was unfortunately rather subtle and went without being reported until now. The only missing piece is __WQ_ORDERED flag which makes the unbounded workqueue use a single backend queue across different NUMA nodes. It's fixed by making create_singlethread_workqueue() wrap alloc_ordered_workqueue() so that possible future updates are inherited automatically" * 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: apply __WQ_ORDERED to create_singlethread_workqueue()
2014-09-22Fix nasty 32-bit overflow bug in buffer i/o code.Anton Altaparmakov
On 32-bit architectures, the legacy buffer_head functions are not always handling the sector number with the proper 64-bit types, and will thus fail on 4TB+ disks. Any code that uses __getblk() (and thus bread(), breadahead(), sb_bread(), sb_breadahead(), sb_getblk()), and calls it using a 64-bit block on a 32-bit arch (where "long" is 32-bit) causes an inifinite loop in __getblk_slow() with an infinite stream of errors logged to dmesg like this: __find_get_block_slow() failed. block=6740375944, b_blocknr=2445408648 b_state=0x00000020, b_size=512 device sda1 blocksize: 512 Note how in hex block is 0x191C1F988 and b_blocknr is 0x91C1F988 i.e. the top 32-bits are missing (in this case the 0x1 at the top). This is because grow_dev_page() is broken and has a 32-bit overflow due to shifting the page index value (a pgoff_t - which is just 32 bits on 32-bit architectures) left-shifted as the block number. But the top bits to get lost as the pgoff_t is not type cast to sector_t / 64-bit before the shift. This patch fixes this issue by type casting "index" to sector_t before doing the left shift. Note this is not a theoretical bug but has been seen in the field on a 4TiB hard drive with logical sector size 512 bytes. This patch has been verified to fix the infinite loop problem on 3.17-rc5 kernel using a 4TB disk image mounted using "-o loop". Without this patch doing a "find /nt" where /nt is an NTFS volume causes the inifinite loop 100% reproducibly whilst with the patch it works fine as expected. Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-22Staging: iio: meter: Fix unnecessary space warningAybuke Ozdemir
Fixed "Unnecessary space before function pointer argument" checkpatch.pl warning in ade7854.h Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22staging: iio: accel: remove else after returnTapasweni Pathak
This patch fixes checkpatch.pl warning in files of iio: accel WARNING : else is not generally useful after a break or return Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Staging: iio: adc: Fix else after return warningDarshana Padmadas
This patch fixes checkpatch.pl warning: WARNING: else is not generally useful after a break or return Signed-off-by: Darshana Padmadas <darshanapadmadas@gmail.com> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Staging: iio: adc: Fix quoted string split accross linesDarshana Padmadas
This patch fixes the checkpatch warning: WARNING: quoted string split across lines Signed-off-by: Darshana Padmadas <darshanapadmadas@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Staging: iio: accel: Replace msleep with usleep for given rangeDarshana Padmadas
This patch fixes checkpatch.pl warning: WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt As per Documentation/timers/timers-howto.txt usleep_range should be used for sleeping for 10us-20ms Signed-off-by: Darshana Padmadas <darshanapadmadas@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Staging: iio: adc: Fix warning prefer kmalloc_array over kmallocDarshana Padmadas
This patch fixes the checkpatch warning: WARNING: Prefer kmalloc_array over kmalloc with multiply kmalloc_array is preffered for allocating for arrays. Signed-off-by: Darshana Padmadas <darshanapadmadas@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22HID: wacom: fix timeout on probe for some wacomsBenjamin Tissoires
Some Wacom tablets (at least the ISDv4 found in the Lenovo X230) timeout during probe while retrieving the input reports. The only time this information is valuable is during the feature_mapping stage, so we can ask for it there and discard the generic input reports retrieval. This gives a code path closer to the wacom.ko driver when it was in the input subtree (not HID). Cc: stable@vger.kernel.org # requires cherry-pick of c64d883476 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-22staging: iio: fix up merge errorGreg Kroah-Hartman
Fix up a build merge error in drivers/iio/accel/bma180.c that I caused. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22cxgb4i: avoid holding mutex in interrupt contextAnish Bhatt
cxgbi_inet6addr_handler() can be called in interrupt context, so use rcu protected list while finding netdev Applies on top of core-for-3.18 Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Karen Xie <kxie@chelsio.com> Fixes: fc8d0590d914 ("libcxgbi: Add ipv6 api to driver") Fixes: 759a0cc5a3e1 ("cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api") Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-22storvsc: get rid of overly verbose warning messagesK. Y. Srinivasan
Get rid of the warning messages since they will clutter up various system logs and are of questionable value to the end user. For debugging purposes, this information can be gotten by setting the scsi log level appropriately. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-22mpt2sas: fix undefined reference to `__udivdi3' compilation errorsSreekanth Reddy
This patch will fix the below compilation errors on i386 ARCH drivers/built-in.o: In function `_scsih_qcmd': mpt2sas_scsih.c:(.text+0x1e7b56): undefined reference to `__udivdi3' mpt2sas_scsih.c:(.text+0x1e7b8a): undefined reference to `__umoddi3' Used sector_div() API to fix above compilation errors. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-22Merge 3.17-rc6 into staging-next.Greg Kroah-Hartman
We want the fixes in there, and it resolves a merge issue with drivers/iio/accel/bma180.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22HID: sony: Set touchpad bits in the input_configured callbackFrank Praznik
Set the DualShock4 touchpad bits in the input_configured callback so that they are registered properly for any input devices created during hid_hw_start. Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-22Merge 3.17-rc6 into usb-nextGreg Kroah-Hartman
We want the USB fixes in this branch as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Merge tag 'usb-serial-3.18-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next Johan writes: USB-serial updates for v3.18-rc1 These changes add two new "simple" drivers, while removing the redundant zte_ev driver (PIDs moved to option). Included are also some minor clean ups to the xsens_mt driver, and the enabling of further baud rates for pl2303 devices. Signed-off-by: Johan Hovold <johan@kernel.org>
2014-09-22ARM: at91: document Atmel SMART compatiblesAlexandre Belloni
Document all the available compatibles for Atmel "SMART" SoCs. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-22ARM: at91: add sama5d4 support to sama5_defconfigAlexandre Belloni
Add sama5d4 to sama5_defconfig to build kernel booting on both sama5d3 and samad4. Note that earlyprintk can only be working for one or the other. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-22ARM: at91: dt: add device tree file for SAMA5D4ek boardNicolas Ferre
Add reference SAMA5D4-EK platform DT file. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-22ARM: at91: dt: add device tree file for SAMA5D4 SoCNicolas Ferre
Add SAMA5D4 SoC DT file. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-22cpufreq: release policy->rwsem on errorPrarit Bhargava
While debugging a cpufreq-related hardware failure on a system I saw the following lockdep warning: ========================= [ BUG: held lock freed! ] 3.17.0-rc4+ #1 Tainted: G E ------------------------- insmod/2247 is freeing memory ffff88006e1b1400-ffff88006e1b17ff, with a lock still held there! (&policy->rwsem){+.+...}, at: [<ffffffff8156d37d>] __cpufreq_add_dev.isra.21+0x47d/0xb80 3 locks held by insmod/2247: #0: (subsys mutex#5){+.+.+.}, at: [<ffffffff81485579>] subsys_interface_register+0x69/0x120 #1: (cpufreq_rwsem){.+.+.+}, at: [<ffffffff8156cf73>] __cpufreq_add_dev.isra.21+0x73/0xb80 #2: (&policy->rwsem){+.+...}, at: [<ffffffff8156d37d>] __cpufreq_add_dev.isra.21+0x47d/0xb80 stack backtrace: CPU: 0 PID: 2247 Comm: insmod Tainted: G E 3.17.0-rc4+ #1 Hardware name: HP ProLiant MicroServer Gen8, BIOS J06 08/24/2013 0000000000000000 000000008f3063c4 ffff88006f87bb30 ffffffff8171b358 ffff88006bcf3750 ffff88006f87bb68 ffffffff810e09e1 ffff88006e1b1400 ffffea0001b86c00 ffffffff8156d327 ffff880073003500 0000000000000246 Call Trace: [<ffffffff8171b358>] dump_stack+0x4d/0x66 [<ffffffff810e09e1>] debug_check_no_locks_freed+0x171/0x180 [<ffffffff8156d327>] ? __cpufreq_add_dev.isra.21+0x427/0xb80 [<ffffffff8121412b>] kfree+0xab/0x2b0 [<ffffffff8156d327>] __cpufreq_add_dev.isra.21+0x427/0xb80 [<ffffffff81724cf7>] ? _raw_spin_unlock+0x27/0x40 [<ffffffffa003517f>] ? pcc_cpufreq_do_osc+0x17f/0x17f [pcc_cpufreq] [<ffffffff8156da8e>] cpufreq_add_dev+0xe/0x10 [<ffffffff814855d1>] subsys_interface_register+0xc1/0x120 [<ffffffff8156bcf2>] cpufreq_register_driver+0x112/0x340 [<ffffffff8121415a>] ? kfree+0xda/0x2b0 [<ffffffffa003517f>] ? pcc_cpufreq_do_osc+0x17f/0x17f [pcc_cpufreq] [<ffffffffa003562e>] pcc_cpufreq_init+0x4af/0xe81 [pcc_cpufreq] [<ffffffffa003517f>] ? pcc_cpufreq_do_osc+0x17f/0x17f [pcc_cpufreq] [<ffffffff81002144>] do_one_initcall+0xd4/0x210 [<ffffffff811f7472>] ? __vunmap+0xd2/0x120 [<ffffffff81127155>] load_module+0x1315/0x1b70 [<ffffffff811222a0>] ? store_uevent+0x70/0x70 [<ffffffff811229d9>] ? copy_module_from_fd.isra.44+0x129/0x180 [<ffffffff81127b86>] SyS_finit_module+0xa6/0xd0 [<ffffffff81725b69>] system_call_fastpath+0x16/0x1b cpufreq: __cpufreq_add_dev: ->get() failed insmod: ERROR: could not insert module pcc-cpufreq.ko: No such device The warning occurs in the __cpufreq_add_dev() code which does down_write(&policy->rwsem); ... if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { policy->cur = cpufreq_driver->get(policy->cpu); if (!policy->cur) { pr_err("%s: ->get() failed\n", __func__); goto err_get_freq; } If cpufreq_driver->get(policy->cpu) returns an error we execute the code at err_get_freq, which does not up the policy->rwsem. This causes the lockdep warning. Trivial patch to up the policy->rwsem in the error path. After the patch has been applied, and an error occurs in the cpufreq_driver->get(policy->cpu) call we will now see cpufreq: __cpufreq_add_dev: ->get() failed cpufreq: __cpufreq_add_dev: ->get() failed modprobe: ERROR: could not insert 'pcc_cpufreq': No such device Fixes: 4e97b631f24c (cpufreq: Initialize governor for a new policy under policy->rwsem) Signed-off-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 3.14+ <stable@vger.kernel.org> # 3.14+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-22cpufreq: fix cpufreq suspend/resume for intel_pstateLan Tianyu
Cpufreq core introduces cpufreq_suspended flag to let cpufreq sysfs nodes across S2RAM/S2DISK. But the flag is only set in the cpufreq_suspend() for cpufreq drivers which have target or target_index callback. This skips intel_pstate driver. This patch is to set the flag before checking target or target_index callback. Fixes: 2f0aea936360 (cpufreq: suspend governors on system suspend/hibernate) Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Cc: 3.15+ <stable@vger.kernel.org> # 3.15+ [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-22ACPI / scan: Correct error return value of create_modalias()Mika Westerberg
There is a typo, it should be negative -errno instead. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-22ACPI / video: disable native backlight for ThinkPad X201sAaron Lu
The ThinkPad X201s has a working ACPI video backlight interface and is shipped before Win8; then there is BIOS update that starts to query _OSI("Windows 2012") and that would make our video module stop creating backlight interface and caused problem for the user. Add it to the DMI table to disable native backlight to fix this problem. Link: https://bugzilla.kernel.org/show_bug.cgi?id=81691 Link: https://bugzilla.kernel.org/show_bug.cgi?id=51231 Cc: 3.16+ <stable@vger.kernel.org> # 3.16+ Reported-and-tested-by: Yves-Alexis Perez <corsac@debian.org> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-22KVM: correct null pid check in kvm_vcpu_yield_to()Sam Bobroff
Correct a simple mistake of checking the wrong variable before a dereference, resulting in the dereference not being properly protected by rcu_dereference(). Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-22arm64: Implement set_arch_dma_coherent_ops() to replace bus notifiersCatalin Marinas
Commit 6ecba8eb51b7 (arm64: Use bus notifiers to set per-device coherent DMA ops) introduced bus notifiers to set the coherent dma ops based on the 'dma-coherent' DT property. Since the generic of_dma_configure() handles this property for platform and AMBA devices, replace the notifiers with set_arch_dma_coherent_ops(). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-09-22of: amba: use of_dma_configure for AMBA devicesRobin Murphy
Commit 591c1e ("of: configure the platform device dma parameters) introduced a common mechanism to configure DMA from DT properties. AMBA devices created from DT can take advantage of this, too. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-09-22arm64: dmi: Add SMBIOS/DMI supportYi Li
SMBIOS is important for server hardware vendors. It implements a spec for providing descriptive information about the platform. Things like serial numbers, physical layout of the ports, build configuration data, and the like. This has been tested by dmidecode and lshw tools. This patch adds the call to dmi_scan_machine() to arm64_enter_virtual_mode(), as that is the point where the EFI Configuration Tables are registered as being available. It needs to be in an early_initcall anyway as dmi_id_init(), which is an arch_initcall itself, depends on dmi_scan_machine() having been called already. Signed-off-by: Yi Li <yi.li@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-09-22ARM: dts: rockchip: Remove "regulator-always-on" in vcc_rmii for Radxa RockRomain Perier
On Rockchip RK3188 SoCs the platform driver emac_rockchip is used. This variant driver enables this regulator when the device driver is loaded. The phy no longer needs to be always on. Signed-off-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2014-09-22ARM: at91: SAMA5D4 SoC detection code and low level routinesNicolas Ferre
SoC identification code, kernel uncompress and low level debugging routines update. On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another round of detection is needed. We also had to differentiate with SAMA5D3 SoC family and rename some variables. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-22ARM: at91: introduce basic SAMA5D4 supportNicolas Ferre
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-22clk: at91: add a driver for the h32mx clockAlexandre Belloni
Newer SoCs have two different AHB interconnect. The AHB 32 bits Matrix interconnect (h32mx) has a clock that can be setup at the half of the h64mx clock (which is mck). The h32mx clock can not exceed 90 MHz. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-22USB: cp210x: add support for Seluxit USB dongleAndreas Bomholtz
Added the Seluxit ApS USB Serial Dongle to cp210x driver. Signed-off-by: Andreas Bomholtz <andreas@seluxit.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2014-09-22USB: serial: cp210x: added Ketra N1 wireless interface supportJoe Savage
Added support for Ketra N1 wireless interface, which uses the Silicon Labs' CP2104 USB to UART bridge with customized PID 8946. Signed-off-by: Joe Savage <joe.savage@goketra.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2014-09-22KVM: PPC: Pass enum to kvmppc_get_last_instAlexander Graf
The kvmppc_get_last_inst function recently received a facelift that allowed us to pass an enum of the type of instruction we want to read into it rather than an unreadable boolean. Unfortunately, not all callers ended up passing the enum. This wasn't really an issue as "true" and "false" happen to match the two enum values we have, but it's still hard to read. Update all callers of kvmppc_get_last_inst() to follow the new calling convention. Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22powerpc/kvm: common sw breakpoint instr across ppcMadhavan Srinivasan
This patch extends the use of illegal instruction as software breakpoint instruction across the ppc platform. Patch extends booke program interrupt code to support software breakpoint. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> [agraf: Fix bookehv] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22powerpc/kvm: support to handle sw breakpointMadhavan Srinivasan
This patch adds kernel side support for software breakpoint. Design is that, by using an illegal instruction, we trap to hypervisor via Emulation Assistance interrupt, where we check for the illegal instruction and accordingly we return to Host or Guest. Patch also adds support for software breakpoint in PR KVM. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: Book3E: Enable e6500 coreMihai Caraman
Now that AltiVec and hardware thread support is in place enable e6500 core. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: e500mc: Add support for single threaded vcpus on e6500 coreMihai Caraman
ePAPR represents hardware threads as cpu node properties in device tree. So with existing QEMU, hardware threads are simply exposed as vcpus with one hardware thread. The e6500 core shares TLBs between hardware threads. Without tlb write conditional instruction, the Linux kernel uses per core mechanisms to protect against duplicate TLB entries. The guest is unable to detect real siblings threads, so it can't use the TLB protection mechanism. An alternative solution is to use the hypervisor to allocate different lpids to guest's vcpus that runs simultaneous on real siblings threads. On systems with two threads per core this patch halves the size of the lpid pool that the allocator sees and use two lpids per VM. Use even numbers to speedup vcpu lpid computation with consecutive lpids per VM: vm1 will use lpids 2 and 3, vm2 lpids 4 and 5, and so on. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> [agraf: fix spelling] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: Book3S HV: Only accept host PVR value for guest PVRPaul Mackerras
Since the guest can read the machine's PVR (Processor Version Register) directly and see the real value, we should disallow userspace from setting any value for the guest's PVR other than the real host value. Therefore this makes kvm_arch_vcpu_set_sregs_hv() check the supplied PVR value and return an error if it is different from the host value, which has been put into vcpu->arch.pvr at vcpu creation time. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: Book3S HV: Increase timeout for grabbing secondary threadsPaul Mackerras
Occasional failures have been seen with split-core mode and migration where the message "KVM: couldn't grab cpu" appears. This increases the length of time that we wait from 1ms to 10ms, which seems to work around the issue. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: Remove shared defines for SPE and AltiVec interruptsMihai Caraman
We currently decide at compile-time which of the SPE or AltiVec units to support exclusively. Guard kernel defines with CONFIG_SPE_POSSIBLE and CONFIG_PPC_E500MC and remove shared defines. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-09-22KVM: PPC: Remove the tasklet used by the hrtimerMihai Caraman
Powerpc timer implementation is a copycat version of s390. Now that they removed the tasklet with commit ea74c0ea1b24a6978a6ebc80ba4dbc7b7848b32d follow this optimization. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
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