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2016-01-27cpuidle: coupled: remove unused define cpuidle_coupled_lockAnders Roxell
This was found with the -RT patch enabled, but the fix should apply to non-RT also. Used multi_v7_defconfig+PREEMPT_RT_FULL=y and this caused a compilation warning without this fix: ../drivers/cpuidle/coupled.c:122:21: warning: 'cpuidle_coupled_lock' defined but not used [-Wunused-variable] Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-27PM / Domains: Fix typo in commentMoritz Fischer
Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-27PM / Domains: Fix potential deadlock while adding/removing subdomainsUlf Hansson
We must preserve the same order of how we acquire and release the lock for genpd, as otherwise we may encounter deadlocks. The power on phase of a genpd starts by acquiring its lock. Then it walks the hierarchy of its parent domains to be able to power on these first, as per design of genpd. From a locking perspective this means the locks of the parents becomes acquired after the lock of the subdomain. Let's fix pm_genpd_add|remove_subdomain() to maintain the same order of acquiring/releasing the genpd lock as being applied in the power on/off sequence. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-27Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull virtio tests and fixes from Michael Tsirkin: "This fixes existing tests broken by barrier rework, and adds some new tests. Plus, there's a fix for an old bug in virtio-pci" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: tools/virtio: add ringtest utilities sh: fix smp_store_mb for !SMP tools/virtio: use virt_xxx barriers virtio_pci: fix use after free on release
2016-01-27Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "The main thing here is to get us booting under qemu again after it turned out that not all of the PMU registers are emulated there, causing us to die early in boot. - Ensure we don't access PMU registers of the PMU is not implemented (fixes booting under QEMU) - Fix BUG_ON triggered during module loading with DEBUG_SET_MODULE_RONX - Ensure the kasan zero page is read-only - Hide __efistub_ symbol aliases from kallsyms, since they otherwise confuse the backtrace code - Ensure !PTE_WRITE kernel ptes are marked as read-only - defconfig updates based on requests and patches on the list - Other minor fixes (typos, build system)" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mm: avoid calling apply_to_page_range on empty range arm64: defconfig: updates for 4.5 arm64: errata: Add -mpc-relative-literal-loads to build flags Eliminate the .eh_frame sections from the aarch64 vmlinux and kernel modules arm64: Fix an enum typo in mm/dump.c arm64: Honour !PTE_WRITE in set_pte_at() for kernel mappings arm64: kernel: fix architected PMU registers unconditional access arm64: kasan: ensure that the KASAN zero page is mapped read-only arm64: hide __efistub_ aliases from kallsyms
2016-01-27Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Paolo Bonzini: "s390 and POWER bug fixes, plus enabling the KVM-VFIO interface on s390" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM doc: Fix KVM_SMI chapter number KVM: s390: fix memory overwrites when vx is disabled KVM: s390: Enable the KVM-VFIO device KVM: s390: fix guest fprs memory leak KVM: PPC: Fix ONE_REG AltiVec support KVM: PPC: Increase memslots to 512 KVM: PPC: Book3S PR: Remove unused variable 'vcpu_book3s' KVM: PPC: Fix emulation of H_SET_DABR/X on POWER8 KVM: PPC: Book3S HV: Handle unexpected traps in guest entry/exit code better
2016-01-27mailmap: redirect inactive address <ao2@amarulasolutions.com>Antonio Ospite
The email address <ao2@amarulasolutions.com> is not active anymore, use Antonio's personal email address <ao2@ao2.it> in case someone wants to get in touch for the code wrote for Amarula Solutions. Signed-off-by: Antonio Ospite <ao2@ao2.it> Cc: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-27vfio/noiommu: Don't use iommu_present() to track fake groupsAlex Williamson
Using iommu_present() to determine whether an IOMMU group is real or fake has some problems. First, apparently Power systems don't register an IOMMU on the device bus, so the groups and containers get marked as noiommu and then won't bind to their actual IOMMU driver. Second, I expect we'll run into the same issue as we try to support vGPUs through vfio, since they're likely to emulate this behavior of creating an IOMMU group on a virtual device and then providing a vfio IOMMU backend tailored to the sort of isolation they provide, which won't necessarily be fully compatible with the IOMMU API. The solution here is to use the existing iommudata interface to IOMMU groups, which allows us to easily identify the fake groups we've created for noiommu purposes. The iommudata we set is purely arbitrary since we're only comparing the address, so we use the address of the noiommu switch itself. Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru> Tested-by: Anatoly Burakov <anatoly.burakov@intel.com> Tested-by: Santosh Shukla <sshukla@mvista.com> Fixes: 03a76b60f8ba ("vfio: Include No-IOMMU mode") Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-01-27ARM: wire up copy_file_range() syscallRussell King
Add the copy_file_range() syscall to ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-01-27drm/radeon: fix DP audio support for APU with DCE4.1 display engineSlava Grigorev
Properly setup the DFS divider for DP audio for DCE4.1. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27drm/radeon: Add a common function for DFS handlingSlava Grigorev
Move encoding of DFS (digital frequency synthesizer) divider into a separate function and improve calculation precision. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27drm/radeon: cleaned up VCO output settings for DP audioSlava Grigorev
This is preparation for the fixes in the following patches. Signed-off-by: Slava Grigorev <slava.grigorev@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-01-27drm/amd/powerplay: Update SMU firmware loading for StoneyRex Zhu
Fix firmware init on Stoney when powerplay is enabled. Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-01-27seccomp: always propagate NO_NEW_PRIVS on tsyncJann Horn
Before this patch, a process with some permissive seccomp filter that was applied by root without NO_NEW_PRIVS was able to add more filters to itself without setting NO_NEW_PRIVS by setting the new filter from a throwaway thread with NO_NEW_PRIVS. Signed-off-by: Jann Horn <jann@thejh.net> Cc: stable@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
2016-01-27btrfs: don't use GFP_HIGHMEM for free-space-tree bitmap kzallocChris Mason
This was copied incorrectly from the __vmalloc call. Signed-off-by: Chris Mason <clm@fb.com>
2016-01-27debugobjects: Allow bigger number of early boot objectsChristian Borntraeger
On my bigger s390 systems I always get "Out of memory. ODEBUG disabled". Since the number of objects is needed at compile time, we can not change the size dynamically before the caches etc are available. Doubling the size seems to do the trick. Since it is init data it will be freed anyway, this should be ok. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Link: http://lkml.kernel.org/r/1453905478-13409-1-git-send-email-borntraeger@de.ibm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27include/linux/cleancache.h: Clean up codeChen Gang
Let cleancache_fs_enabled() call cleancache_fs_enabled_mapping() directly. Remove redundant variable ret in cleancache_get_page(). Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-01-27cleancache: constify cleancache_ops structureJulia Lawall
The cleancache_ops structure is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-01-27Merge branch 'dev/fst-followup' of ↵Chris Mason
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-27btrfs: sysfs: check initialization state before updating featuresDavid Sterba
If the mount phase is not finished, we can't update the sysfs files. Reported-by: Chris Mason <clm@fb.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
2016-01-27irqchip/atmel-aic: Fix wrong bit operation for IRQ priorityMilo Kim
Atmel AIC has common structure for SMR (Source Mode Register). bit[6:5] Interrupt source type bit[2:0] Priority level Other bits are unused. To update new priority value, bit[2:0] should be cleared first and then new priority level can be written. However, aic_common_set_priority() helper clears source type bits instead of priority bits. This patch fixes wrong mask bit operation. Fixes: b1479ebb7720 "irqchip: atmel-aic: Add atmel AIC/AIC5 drivers" Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: Nicholas Ferre <nicolas.ferre@atmel.com> Cc: stable@vger.kernel.org #v3.17+ Link: http://lkml.kernel.org/r/1452669592-3401-2-git-send-email-milo.kim@ti.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-27ALSA: Add missing dependency on CONFIG_SND_TIMERTakashi Iwai
Since the build of PCM timer may be disabled via Kconfig now, each driver that provides a timer interface needs to set CONFIG_SND_TIMER explicitly. Otherwise it may get a build error due to missing symbol. Fixes: 90bbaf66ee7b ('ALSA: timer: add config item to export PCM timer disabling for expert') Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-01-26Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixesJames Bottomley
2016-01-26SCSI: fix crashes in sd and sr runtime PMAlan Stern
Runtime suspend during driver probe and removal can cause problems. The driver's runtime_suspend or runtime_resume callbacks may invoked before the driver has finished binding to the device or after the driver has unbound from the device. This problem shows up with the sd and sr drivers, and can cause disk or CD/DVD drives to become unusable as a result. The fix is simple. The drivers store a pointer to the scsi_disk or scsi_cd structure as their private device data when probing is finished, so we simply have to be sure to clear the private data during removal and test it during runtime suspend/resume. This fixes <https://bugs.debian.org/801925>. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reported-by: Paul Menzel <paul.menzel@giantmonkey.de> Reported-by: Erich Schubert <erich@debian.org> Reported-by: Alexandre Rossi <alexandre.rossi@gmail.com> Tested-by: Paul Menzel <paul.menzel@giantmonkey.de> Tested-by: Erich Schubert <erich@debian.org> CC: <stable@vger.kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2016-01-27powerpc/eeh: Fix PE location codeGavin Shan
In eeh_pe_loc_get(), the PE location code is retrieved from the "ibm,loc-code" property of the device node for the bridge of the PE's primary bus. It's not correct because the property indicates the parent PE's location code. This reads the correct PE location code from "ibm,io-base-loc-code" or "ibm,slot-location-code" property of PE parent bus's device node. Cc: stable@vger.kernel.org # v3.16+ Fixes: 357b2f3dd9b7 ("powerpc/eeh: Dump PE location code") Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Tested-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-26ARM: 8500/1: fix atags_to_fdt with stack-protector-strongKees Cook
Building with CONFIG_CC_STACKPROTECTOR_STRONG triggers protection code generation under CONFIG_ARM_ATAG_DTB_COMPAT but this is too early for being able to use any of the stack_chk code. Explicitly disable it for only the atags_to_fdt bits. Suggested-by: zhxihu <zhxihu@marvell.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-01-26drm/etnaviv: call correct function when trying to vmap a DMABUFLucas Stach
When trying to get the vmap address of an imported buffer, we must call into the appropriate helper function, to allow the exporter to establish the vmap, instead of trying to vmap the buffer on our own. Add an indirection through etnaviv_gem_ops to allow the correct implementation to be called. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: rename etnaviv_gem_vaddr to etnaviv_gem_vmapLucas Stach
This function follows the semantics of vmap() by returning NULL in case of an error. To make things less confusing rename it to make make both functions more closely related. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: fix get pages error path in etnaviv_gem_vaddrLucas Stach
In case that etnaviv_gem_get_pages is unable to get the required pages the object mutex needs to be unlocked. Also return NULL in this case instead of propagating the error, as callers of this function might not be prepared to handle a pointer error, but expect this call to follow the semantics of a plain vmap to return NULL in case of an error. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: fix memory leak in IOMMU init pathLucas Stach
Plug in error handling to free any allocated ressources in the IOMMU init path. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add further minor features and varyings countRussell King
Export further minor feature bitmasks and the varyings count from the GPU specifications registers to userspace. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add helper for comparing model/revision IDsRussell King
Add and use a helper for comparing the model and revision IDs. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: add helper to extract bitfieldsRussell King
Add a helper to extract etnaviv bitfields from register values. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: use defined constants for the chip modelRussell King
Use the defined constants in common.xml.h for the chip model rather than coding these as hex numbers. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: update common and state_hi xml.h filesRussell King
Update the common and state_hi xml.h header files from the etnaviv repository. Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26drm/etnaviv: ignore VG GPUs with FE2.0Russell King
Ignore GPUs with a 2.0 front end. These have a different register layout for the front end, which provokes imprecise aborts from the register accesses in the 'gpu' debugfs file. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2016-01-26arm64: mm: avoid calling apply_to_page_range on empty rangeMika Penttilä
Calling apply_to_page_range with an empty range results in a BUG_ON from the core code. This can be triggered by trying to load the st_drv module with CONFIG_DEBUG_SET_MODULE_RONX enabled: kernel BUG at mm/memory.c:1874! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 3 PID: 1764 Comm: insmod Not tainted 4.5.0-rc1+ #2 Hardware name: ARM Juno development board (r0) (DT) task: ffffffc9763b8000 ti: ffffffc975af8000 task.ti: ffffffc975af8000 PC is at apply_to_page_range+0x2cc/0x2d0 LR is at change_memory_common+0x80/0x108 This patch fixes the issue by making change_memory_common (called by the set_memory_* functions) a NOP when numpages == 0, therefore avoiding the erroneous call to apply_to_page_range and bringing us into line with x86 and s390. Cc: <stable@vger.kernel.org> Reviewed-by: Laura Abbott <labbott@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Mika Penttilä <mika.penttila@nextfour.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-01-26irqchip/gic-v3-its: Recompute the number of pages on page size changeMarc Zyngier
When the programming of a GITS_BASERn register fails because of an unsupported ITS page size, we retry it with a smaller page size. Unfortunately, we don't recompute the number of allocated ITS pages, indicating the wrong value computed in the original allocation. A convenient fix is to free the pages we allocated, update the page size, and restart the allocation. This will ensure that we always allocate the right amount in the case of a device table, specially if we have to reduce the allocation order to stay within the boundaries of the ITS maximum allocation. Reported-and-tested-by: Ma Jun <majun258@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1453818255-1289-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26base: Export platform_msi_domain_[alloc,free]_irqsThomas Petazzoni
The new function platform_msi_domain_{alloc,free}_irqs are meant to be used in platform drivers, which can be built as modules. Therefore, it makes sense to export them to be used from kernel modules. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Jiang Liu <jiang.liu@linux.intel.com> Link: http://lkml.kernel.org/r/1453816347-32720-4-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26KVM doc: Fix KVM_SMI chapter numberAlexey Kardashevskiy
The KVM_SMI capability is following the KVM_S390_SET_IRQ_STATE capability which is "4.95", this changes the number of the KVM_SMI chapter to 4.96. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26Merge tag 'kvm-s390-master-4.5-1' of ↵Paolo Bonzini
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Fixes for kvm/master (targeting 4.5) 1. Fallout of some bigger floating point/vector rework in s390 - memory leak -> stable 4.3+ - memory overwrite -> stable 4.4+ 2. enable KVM-VFIO for s390
2016-01-26of: MSI: Simplify irqdomain lookupMarc Zyngier
So far, when trying to associate a device with its MSI domain, we first lookup the domain using a MSI token, and if this doesn't return anything useful, we pick up any domain matching the same node. This logic is broken for two reasons: 1) Only the generic MSI code (PCI or platform) sets this token to PCI/MSI or platform MSI. So we're guaranteed that if there is something to be found, we will find it with the first call. 2) If we have a convoluted situation where: - a single node implements both wired and MSI interrupts - MSI support for that HW hasn't been compiled in we'll end up using the wired domain for MSIs anyway, and things break badly. So let's just remove __of_get_msi_domain, and replace it by a direct call to irq_find_matching_host, because that's what we really want. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rob Herring <robh+dt@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Link: http://lkml.kernel.org/r/1453816347-32720-3-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26irqdomain: Allow domain lookup with DOMAIN_BUS_WIRED tokenMarc Zyngier
Let's take the (outlandish) example of an interrupt controller capable of handling both wired interrupts and PCI MSIs. With the current code, the PCI MSI domain is going to be tagged with DOMAIN_BUS_PCI_MSI, and the wired domain with DOMAIN_BUS_ANY. Things get hairy when we start looking up the domain for a wired interrupt (typically when creating it based on some firmware information - DT or ACPI). In irq_create_fwspec_mapping(), we perform the lookup using DOMAIN_BUS_ANY, which is actually used as a wildcard. This gives us one chance out of two to end up with the wrong domain, and we try to configure a wired interrupt with the MSI domain. Everything grinds to a halt pretty quickly. What we really need to do is to start looking for a domain that would uniquely identify a wired interrupt domain, and only use DOMAIN_BUS_ANY as a fallback. In order to solve this, let's introduce a new DOMAIN_BUS_WIRED token, which is going to be used exactly as described above. Of course, this depends on the irqchip to setup the domain bus_token, and nobody had to implement this so far. Only so far. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Link: http://lkml.kernel.org/r/1453816347-32720-2-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26irqchip: Fix dependencies for archs w/o HAS_IOMEMRichard Weinberger
Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: http://lkml.kernel.org/r/1453760661-1444-19-git-send-email-richard@nod.at Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26irqchip/s3c24xx: Mark init_eint as __maybe_unusedArnd Bergmann
The init_eint array in the s3c24xx irqchip driver is used by every individual chip variant, but Kconfig allows building the driver when they are all disabled, and that leads to a harmless compile-time warning: drivers/irqchip/irq-s3c24xx.c:608:28: error: 'init_eint' defined but not used [-Werror=unused-variable] This marks the array as __maybe_unused to avoid the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1453737499-1960073-1-git-send-email-arnd@arndb.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-01-26KVM: s390: fix memory overwrites when vx is disabledDavid Hildenbrand
The kernel now always uses vector registers when available, however KVM has special logic if support is really enabled for a guest. If support is disabled, guest_fpregs.fregs will only contain memory for the fpu. The kernel, however, will store vector registers into that area, resulting in crazy memory overwrites. Simply extending that area is not enough, because the format of the registers also changes. We would have to do additional conversions, making the code even more complex. Therefore let's directly use one place for the vector/fpu registers + fpc (in kvm_run). We just have to convert the data properly when accessing it. This makes current code much easier. Please note that vector/fpu registers are now always stored to vcpu->run->s.regs.vrs. Although this data is visible to QEMU and used for migration, we only guarantee valid values to user space when KVM_SYNC_VRS is set. As that is only the case when we have vector register support, we are on the safe side. Fixes: b5510d9b68c3 ("s390/fpu: always enable the vector facility if it is available") Cc: stable@vger.kernel.org # v4.4 d9a3a09af54d s390/kvm: remove dependency on struct save_area definition Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> [adopt to d9a3a09af54d]
2016-01-26KVM: s390: Enable the KVM-VFIO deviceDong Jia Shi
The KVM-VFIO device is used by the QEMU VFIO device. It is used to record the list of in-use VFIO groups so that KVM can manipulate them. While we don't need this on s390 currently, let's try to be like everyone else. Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-01-26KVM: s390: fix guest fprs memory leakDavid Hildenbrand
fprs is never freed, therefore resulting in a memory leak if kvm_vcpu_init() fails or the vcpu is destroyed. Fixes: 9977e886cbbc ("s390/kernel: lazy restore fpu registers") Cc: stable@vger.kernel.org # v4.3+ Reported-by: Eric Farman <farman@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-01-26s390/cio: update measurement characteristicsSebastian Ott
Per channel path measurement characteristics are obtained during channel path registration. However if some properties of a channel path change we don't update the measurement characteristics. Make sure to update the characteristics when we change the properties of a channel path or receive a notification from FW about such a change. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-01-26s390/cio: ensure consistent measurement stateSebastian Ott
Make sure that in all cases where we could not obtain measurement characteristics the associated fields are set to invalid values. Note: without this change the "shared" capability of a channel path for which we could not obtain the measurement characteristics was incorrectly displayed as 0 (not shared). We will now correctly report "unknown" in this case. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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