- 29 Aug, 2019 4 commits
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Alexey Kardashevskiy authored
Invalidating a TCE cache entry for each updated TCE is quite expensive. This makes use of the new iommu_table_ops::xchg_no_kill()/tce_kill() callbacks to bring down the time spent in mapping a huge guest DMA window. Signed-off-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190829085252.72370-4-aik@ozlabs.ru
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Alexey Kardashevskiy authored
Invalidating a TCE cache entry for each updated TCE is quite expensive. This makes use of the new iommu_table_ops::xchg_no_kill()/tce_kill() callbacks to bring down the time spent in mapping a huge guest DMA window; roughly 20s to 10s for each guest's 100GB of DMA space. Signed-off-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by:
Paul Mackerras <paulus@ozlabs.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190829085252.72370-3-aik@ozlabs.ru
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Alexey Kardashevskiy authored
At the moment updates in a TCE table are made by iommu_table_ops::exchange which update one TCE and invalidates an entry in the PHB/NPU TCE cache via set of registers called "TCE Kill" (hence the naming). Writing a TCE is a simple xchg() but invalidating the TCE cache is a relatively expensive OPAL call. Mapping a 100GB guest with PCI+NPU passed through devices takes about 20s. Thankfully we can do better. Since such big mappings happen at the boot time and when memory is plugged/onlined (i.e. not often), these requests come in 512 pages so we call call OPAL 512 times less which brings 20s from the above to less than 10s. Also, since TCE caches can be flushed entirely, calling OPAL for 512 TCEs helps skiboot [1] to decide whether to flush the entire cache or not. This implements 2 new iommu_table_ops callbacks: - xchg_no_kill() to update a single TCE with no TCE invalidation; - tce_kill() to invalidate multiple TCEs. This uses the same xchg_no_kill() callback for IODA1/2. This implements 2 new wrappers on top of the new callbacks similar to the existing iommu_tce_xchg(). This does not use the new callbacks yet, the next patches will; so this should not cause any behavioral change. Signed-off-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190829085252.72370-2-aik@ozlabs.ru
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Alexey Kardashevskiy authored
H_PUT_TCE_INDIRECT handlers receive a page with up to 512 TCEs from a guest. Although we verify correctness of TCEs before we do anything with the existing tables, there is a small window when a check in kvmppc_tce_validate might pass and right after that the guest alters the page with TCEs which can cause early exit from the handler and leave srcu_read_lock(&vcpu->kvm->srcu) (virtual mode) or lock_rmap(rmap) (real mode) locked. This fixes the bug by jumping to the common exit code with an appropriate unlock. Fixes: 121f80ba ("KVM: PPC: VFIO: Add in-kernel acceleration for VFIO") Signed-off-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190826045520.92153-1-aik@ozlabs.ru
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- 16 Aug, 2019 4 commits
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Paul Mackerras authored
Testing has revealed the existence of a race condition where a XIVE interrupt being shut down can be in one of the XIVE interrupt queues (of which there are up to 8 per CPU, one for each priority) at the point where free_irq() is called. If this happens, can return an interrupt number which has been shut down. This can lead to various symptoms: - irq_to_desc(irq) can be NULL. In this case, no end-of-interrupt function gets called, resulting in the CPU's elevated interrupt priority (numerically lowered CPPR) never gets reset. That then means that the CPU stops processing interrupts, causing device timeouts and other errors in various device drivers. - The irq descriptor or related data structures can be in the process of being freed as the interrupt code is using them. This typically leads to crashes due to bad pointer dereferences. This race is basically what commit 62e04686 ("genirq: Add optional hardware synchronization for shutdown", 2019-06-28) is intended to fix, given a get_irqchip_state() method for the interrupt controller being used. It works by polling the interrupt controller when an interrupt is being freed until the controller says it is not pending. With XIVE, the PQ bits of the interrupt source indicate the state of the interrupt source, and in particular the P bit goes from 0 to 1 at the point where the hardware writes an entry into the interrupt queue that this interrupt is directed towards. Normally, the code will then process the interrupt and do an end-of-interrupt (EOI) operation which will reset PQ to 00 (assuming another interrupt hasn't been generated in the meantime). However, there are situations where the code resets P even though a queue entry exists (for example, by setting PQ to 01, which disables the interrupt source), and also situations where the code leaves P at 1 after removing the queue entry (for example, this is done for escalation interrupts so they cannot fire again until they are explicitly re-enabled). The code already has a 'saved_p' flag for the interrupt source which indicates that a queue entry exists, although it isn't maintained consistently. This patch adds a 'stale_p' flag to indicate that P has been left at 1 after processing a queue entry, and adds code to set and clear saved_p and stale_p as necessary to maintain a consistent indication of whether a queue entry may or may not exist. With this, we can implement xive_get_irqchip_state() by looking at stale_p, saved_p and the ESB PQ bits for the interrupt. There is some additional code to handle escalation interrupts properly; because they are enabled and disabled in KVM assembly code, which does not have access to the xive_irq_data struct for the escalation interrupt. Hence, stale_p may be incorrect when the escalation interrupt is freed in kvmppc_xive_{,native_}cleanup_vcpu(). Fortunately, we can fix it up by looking at vcpu->arch.xive_esc_on, with some careful attention to barriers in order to ensure the correct result if xive_esc_irq() races with kvmppc_xive_cleanup_vcpu(). Finally, this adds code to make noise on the console (pr_crit and WARN_ON(1)) if we find an interrupt queue entry for an interrupt which does not have a descriptor. While this won't catch the race reliably, if it does get triggered it will be an indication that the race is occurring and needs to be debugged. Fixes: 243e2511 ("powerpc/xive: Native exploitation of the XIVE interrupt controller") Cc: stable@vger.kernel.org # v4.12+ Signed-off-by:
Paul Mackerras <paulus@ozlabs.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190813100648.GE9567@blackberry
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Paul Mackerras authored
At present, when running a guest on POWER9 using HV KVM but not using an in-kernel interrupt controller (XICS or XIVE), for example if QEMU is run with the kernel_irqchip=off option, the guest entry code goes ahead and tries to load the guest context into the XIVE hardware, even though no context has been set up. To fix this, we check that the "CAM word" is non-zero before pushing it to the hardware. The CAM word is initialized to a non-zero value in kvmppc_xive_connect_vcpu() and kvmppc_xive_native_connect_vcpu(), and is now cleared in kvmppc_xive_{,native_}cleanup_vcpu. Fixes: 5af50993 ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller") Cc: stable@vger.kernel.org # v4.12+ Reported-by:
Cédric Le Goater <clg@kaod.org> Signed-off-by:
Paul Mackerras <paulus@ozlabs.org> Reviewed-by:
Cédric Le Goater <clg@kaod.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190813100100.GC9567@blackberry
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Paul Mackerras authored
Escalation interrupts are interrupts sent to the host by the XIVE hardware when it has an interrupt to deliver to a guest VCPU but that VCPU is not running anywhere in the system. Hence we disable the escalation interrupt for the VCPU being run when we enter the guest and re-enable it when the guest does an H_CEDE hypercall indicating it is idle. It is possible that an escalation interrupt gets generated just as we are entering the guest. In that case the escalation interrupt may be using a queue entry in one of the interrupt queues, and that queue entry may not have been processed when the guest exits with an H_CEDE. The existing entry code detects this situation and does not clear the vcpu->arch.xive_esc_on flag as an indication that there is a pending queue entry (if the queue entry gets processed, xive_esc_irq() will clear the flag). There is a comment in the code saying that if the flag is still set on H_CEDE, we have to abort the cede rather than re-enabling the escalation interrupt, lest we end up with two occurrences of the escalation interrupt in the interrupt queue. However, the exit code doesn't do that; it aborts the cede in the sense that vcpu->arch.ceded gets cleared, but it still enables the escalation interrupt by setting the source's PQ bits to 00. Instead we need to set the PQ bits to 10, indicating that an interrupt has been triggered. We also need to avoid setting vcpu->arch.xive_esc_on in this case (i.e. vcpu->arch.xive_esc_on seen to be set on H_CEDE) because xive_esc_irq() will run at some point and clear it, and if we race with that we may end up with an incorrect result (i.e. xive_esc_on set when the escalation interrupt has just been handled). It is extremely unlikely that having two queue entries would cause observable problems; theoretically it could cause queue overflow, but the CPU would have to have thousands of interrupts targetted to it for that to be possible. However, this fix will also make it possible to determine accurately whether there is an unhandled escalation interrupt in the queue, which will be needed by the following patch. Fixes: 9b9b13a6 ("KVM: PPC: Book3S HV: Keep XIVE escalation interrupt masked unless ceded") Cc: stable@vger.kernel.org # v4.16+ Signed-off-by:
Paul Mackerras <paulus@ozlabs.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190813100349.GD9567@blackberry
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Cédric Le Goater authored
When a vCPU is brought done, the XIVE VP (Virtual Processor) is first disabled and then the event notification queues are freed. When freeing the queues, we check for possible escalation interrupts and free them also. But when a XIVE VP is disabled, the underlying XIVE ENDs also are disabled in OPAL. When an END (Event Notification Descriptor) is disabled, its ESB pages (ESn and ESe) are disabled and loads return all 1s. Which means that any access on the ESB page of the escalation interrupt will return invalid values. When an interrupt is freed, the shutdown handler computes a 'saved_p' field from the value returned by a load in xive_do_source_set_mask(). This value is incorrect for escalation interrupts for the reason described above. This has no impact on Linux/KVM today because we don't make use of it but we will introduce in future changes a xive_get_irqchip_state() handler. This handler will use the 'saved_p' field to return the state of an interrupt and 'saved_p' being incorrect, softlockup will occur. Fix the vCPU cleanup sequence by first freeing the escalation interrupts if any, then disable the XIVE VP and last free the queues. Fixes: 90c73795 ("KVM: PPC: Book3S HV: Add a new KVM device for the XIVE native exploitation mode") Fixes: 5af50993 ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller") Cc: stable@vger.kernel.org # v4.12+ Signed-off-by:
Cédric Le Goater <clg@kaod.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190806172538.5087-1-clg@kaod.org
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- 28 Jul, 2019 13 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull structleak fix from Kees Cook: "Disable gcc-based stack variable auto-init under KASAN (Arnd Bergmann). This fixes a bunch of build warnings under KASAN and the gcc-plugin-based stack auto-initialization features (which are arguably redundant, so better to let KASAN control this)" * tag 'meminit-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: structleak: disable STRUCTLEAK_BYREF in combination with KASAN_STACK
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - add compile_commands.json to .gitignore - fix false-positive warning from gen_compile_commands.py after allnoconfig build - remove unused code * tag 'kbuild-fixes-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: remove unused single-used-m gen_compile_commands: lower the entry count threshold .gitignore: Add compilation database file kbuild: remove unused objectify macro
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc driver fixes from Greg KH: "Here are some small char and misc driver fixes for 5.3-rc2 to resolve some reported issues. Nothing major at all, some binder bugfixes for issues found, some new mei device ids, firmware building warning fixes, habanalabs fixes, a few other build fixes, and a MAINTAINERS update. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: test_firmware: fix a memory leak bug hpet: Fix division by zero in hpet_time_div() eeprom: make older eeprom drivers select NVMEM_SYSFS vmw_balloon: Remove Julien from the maintainers list fpga-manager: altera-ps-spi: Fix build error mei: me: add mule creek canyon (EHL) device ids binder: prevent transactions to context manager from its own process. binder: Set end of SG buffer area properly. firmware: Fix missing inline firmware: fix build errors in paged buffer handling code habanalabs: don't reset device when getting VRHOT habanalabs: use %pad for printing a dma_addr_t
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty fixes from Greg KH: "Here are two tty/vt fixes: - delete the netx-serial driver as the arch has been removed, no need to keep the serial driver for it around either. - vt console_lock fix to resolve a reported noisy warning at runtime Both of these have been in linux-next with no reported issues" * tag 'tty-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: vt: Grab console_lock around con_is_bound in show_bind tty: serial: netx: Delete driver
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdxLinus Torvalds authored
Pull SPDX fixes from Greg KH: "Here are some small SPDX fixes for 5.3-rc2 for things that came in during the 5.3-rc1 merge window that we previously missed. Only three small patches here: - two uapi patches to resolve some SPDX tags that were not correct - fix an invalid SPDX tag in the iomap Makefile file All have been properly reviewed on the public mailing lists" * tag 'spdx-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: iomap: fix Invalid License ID treewide: remove SPDX "WITH Linux-syscall-note" from kernel-space headers again treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some small fixes for 5.3-rc2. All of these resolve some reported issues, some more than others :) Included in here is: - xhci fix for an annoying issue with odd devices - reversion of some usb251xb patches that should not have been merged - usb pci quirk additions and fixups - usb storage fix - usb host controller error test fix All of these have been in linux-next with no reported issues" * tag 'usb-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: xhci: Fix crash if scatter gather is used with Immediate Data Transfer (IDT). usb: usb251xb: Reallow swap-dx-lanes to apply to the upstream port Revert "usb: usb251xb: Add US port lanes inversion property" Revert "usb: usb251xb: Add US lanes inversion dts-bindings" usb: wusbcore: fix unbalanced get/put cluster_id usb/hcd: Fix a NULL vs IS_ERR() bug in usb_hcd_setup_local_mem() usb-storage: Add a limitation for blk_queue_max_hw_sectors() usb: pci-quirks: Minor cleanup for AMD PLL quirk usb: pci-quirks: Correct AMD PLL quirk detection
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "Here's the first batch of fixes for this release cycle. Main diffstat here is the re-deletion of netx. I messed up and most likely didn't remove the files from the index when I test-merged this and saw conflicts, and from there on out 'git rerere' remembered the mistake and I missed checking it. Here it's done again as expected. Besides that: - A defconfig refresh + enabling of new drivers for u8500 - i.MX fixlets for i2c/SAI/pinmux - sleep.S build fix for Davinci - Broadcom devicetree build/warning fix" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: defconfig: u8500: Add new drivers ARM: defconfig: u8500: Refresh defconfig ARM: dts: bcm: bcm47094: add missing #cells for mdio-bus-mux ARM: davinci: fix sleep.S build error on ARMv4 arm64: dts: imx8mq: fix SAI compatible arm64: dts: imx8mm: Correct SAI3 RXC/TXFS pin's mux option #1 ARM: dts: imx6ul: fix clock frequency property name of I2C buses ARM: Delete netx a second time ARM: dts: imx7ulp: Fix usb-phy unit address format
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes and functional updates: - Prevent stale huge I/O TLB mappings on 32bit. A long standing bug which got exposed by KPTI support for 32bit - Prevent bogus access_ok() warnings in arch_stack_walk_user() - Add display quirks for Lenovo devices which have height and width swapped - Add the missing CR2 fixup for 32 bit async pagefaults. Fallout of the CR2 bug fix series. - Unbreak handling of force enabled HPET by moving the 'is HPET counting' check back to the original place. - A more accurate check for running on a hypervisor platform in the MDS mitigation code. Not perfect, but more accurate than the previous one. - Update a stale and confusing comment vs. IRQ stacks" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation/mds: Apply more accurate check on hypervisor platform x86/hpet: Undo the early counter is counting check x86/entry/32: Pass cr2 to do_async_page_fault() x86/irq/64: Update stale comment x86/sysfb_efi: Add quirks for some devices with swapped width and height x86/stacktrace: Prevent access_ok() warnings in arch_stack_walk_user() mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() x86/mm: Sync also unmappings in vmalloc_sync_all() x86/mm: Check for pfn instead of page in vmalloc_sync_one()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Thomas Gleixner: "Two fixes for the fair scheduling class: - Prevent freeing memory which is accessible by concurrent readers - Make the RCU annotations for numa groups consistent" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Use RCU accessors consistently for ->numa_group sched/fair: Don't free p->numa_faults with concurrent readers
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "A pile of perf related fixes: Kernel: - Fix SLOTS PEBS event constraints for Icelake CPUs - Add the missing mask bit to allow counting hardware generated prefetches on L3 for Icelake CPUs - Make the test for hypervisor platforms more accurate (as far as possible) - Handle PMUs correctly which override event->cpu - Yet another missing fallthrough annotation Tools: perf.data: - Fix loading of compressed data split across adjacent records - Fix buffer size setting for processing CPU topology perf.data header. perf stat: - Fix segfault for event group in repeat mode - Always separate "stalled cycles per insn" line, it was being appended to the "instructions" line. perf script: - Fix --max-blocks man page description. - Improve man page description of metrics. - Fix off by one in brstackinsn IPC computation. perf probe: - Avoid calling freeing routine multiple times for same pointer. perf build: - Do not use -Wshadow on gcc < 4.8, avoiding too strict warnings treated as errors, breaking the build" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Mark expected switch fall-throughs perf/core: Fix creating kernel counters for PMUs that override event->cpu perf/x86: Apply more accurate check on hypervisor platform perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register perf/x86/intel: Fix SLOTS PEBS event constraint perf build: Do not use -Wshadow on gcc < 4.8 perf probe: Avoid calling freeing routine multiple times for same pointer perf probe: Set pev->nargs to zero after freeing pev->args entries perf session: Fix loading of compressed data split across adjacent records perf stat: Always separate stalled cycles per insn perf stat: Fix segfault for event group in repeat mode perf tools: Fix proper buffer size for feature processing perf script: Fix off by one in brstackinsn IPC computation perf script: Improve man page description of metrics perf script: Fix --max-blocks man page description
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Thomas Gleixner: "A set of locking fixes: - Address the fallout of the rwsem rework. Missing ACQUIREs and a sanity check to prevent a use-after-free - Add missing checks for unitialized mutexes when mutex debugging is enabled. - Remove the bogus code in the generic SMP variant of arch_futex_atomic_op_inuser() - Fixup the #ifdeffery in lockdep to prevent compile warnings" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/mutex: Test for initialized mutex locking/lockdep: Clean up #ifdef checks locking/lockdep: Hide unused 'class' variable locking/rwsem: Add ACQUIRE comments tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop lcoking/rwsem: Add missing ACQUIRE to read_slowpath sleep loop locking/rwsem: Add missing ACQUIRE to read_slowpath exit when queue is empty locking/rwsem: Don't call owner_on_cpu() on read-owner futex: Cleanup generic SMP variant of arch_futex_atomic_op_inuser()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fix from Thomas Gleixner: "A single robustness fix for objtool to handle unbalanced CLAC invocations under all circumstances" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Improve UACCESS coverage
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- 27 Jul, 2019 10 commits
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Linus Torvalds authored
Merge tag 'Wimplicit-fallthrough-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull Wimplicit-fallthrough enablement from Gustavo A. R. Silva: "This marks switch cases where we are expecting to fall through, and globally enables the -Wimplicit-fallthrough option in the main Makefile. Finally, some missing-break fixes that have been tagged for -stable: - drm/amdkfd: Fix missing break in switch statement - drm/amdgpu/gfx10: Fix missing break in switch statement With these changes, we completely get rid of all the fall-through warnings in the kernel" * tag 'Wimplicit-fallthrough-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: Makefile: Globally enable fall-through warning drm/i915: Mark expected switch fall-throughs drm/amd/display: Mark expected switch fall-throughs drm/amdkfd/kfd_mqd_manager_v10: Avoid fall-through warning drm/amdgpu/gfx10: Fix missing break in switch statement drm/amdkfd: Fix missing break in switch statement perf/x86/intel: Mark expected switch fall-throughs mtd: onenand_base: Mark expected switch fall-through afs: fsclient: Mark expected switch fall-throughs afs: yfsclient: Mark expected switch fall-throughs can: mark expected switch fall-throughs firewire: mark expected switch fall-throughs
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 updates from Heiko Carstens: - Add ABI to kernel image file which allows e.g. the file utility to figure out the kernel version. - Wire up clone3 system call. - Add support for kasan bitops instrumentation. - uapi header cleanup: use __u{16,32,64} instead of uint{16,32,64}_t. - Provide proper ARCH_ZONE_DMA_BITS so the s390 DMA zone is correctly defined with 2 GB instead of the default value of 1 MB. - Farhan Ali leaves the group of vfio-ccw maintainers. - Various small vfio-ccw fixes. - Add missing locking for airq_areas array in virtio code. - Minor qdio improvements. * tag 's390-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: MAINTAINERS: vfio-ccw: Remove myself as the maintainer s390/mm: use shared variables for sysctl range check virtio/s390: fix race on airq_areas[] s390/dma: provide proper ARCH_ZONE_DMA_BITS value s390/kasan: add bitops instrumentation s390/bitops: make test functions return bool s390: wire up clone3 system call kbuild: enable arch/s390/include/uapi/asm/zcrypt.h for uapi header test s390: use __u{16,32,64} instead of uint{16,32,64}_t in uapi header s390/hypfs: fix a typo in the name of a function s390/qdio: restrict QAOB usage to IQD unicast queues s390/qdio: add sanity checks to the fast-requeue path s390: enable detection of kernel version from bzImage Documentation: fix vfio-ccw doc vfio-ccw: Update documentation for csch/hsch vfio-ccw: Don't call cp_free if we are processing a channel program vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn vfio-ccw: Fix memory leak and don't call cp_free in cp_init vfio-ccw: Fix misleading comment when setting orb.cmd.c64
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds authored
Pull Devicetree fixes from Rob Herring: "The nvmem changes would typically go thru Greg's tree, but they were missed in the merge window. [ Acked by Greg ] Summary: - Fix mismatches in $id values and actual filenames. Now checked by tools. - Convert nvmem binding to DT schema - Fix a typo in of_property_read_bool() kerneldoc - Remove some redundant description in al-fic interrupt-controller" * tag 'devicetree-fixes-for-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: dt-bindings: Fix more $id value mismatches filenames dt-bindings: nvmem: SID: Fix the examples node names dt-bindings: nvmem: Add YAML schemas for the generic NVMEM bindings of: Fix typo in kerneldoc dt-bindings: interrupt-controller: al-fic: remove redundant binding dt-bindings: clk: allwinner,sun4i-a10-ccu: Correct path in $id
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "A collection of locking and async operations fixes for v5.3-rc2. These had been soaking in a branch targeting the merge window, but missed due to a regression hunt. This fixed up version has otherwise been in -next this past week with no reported issues. In order to gain confidence in the locking changes the pull also includes a debug / instrumentation patch to enable lockdep coverage for libnvdimm subsystem operations that depend on the device_lock for exclusion. As mentioned in the changelog it is a hack, but it works and documents the locking expectations of the sub-system in a way that others can use lockdep to verify. The driver core touches got an ack from Greg. Summary: - Fix duplicate device_unregister() calls (multiple threads competing to do unregister work when scheduling device removal from a sysfs attribute of the self-same device). - Fix badblocks registration order bug. Ensure region badblocks are initialized in advance of namespace registration. - Fix a deadlock between the bus lock and probe operations. - Export device-core infrastructure to coordinate async operations via the device ->dead state. - Add device-core infrastructure to validate device_lock() usage with lockdep" * tag 'libnvdimm-fixes-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: driver-core, libnvdimm: Let device subsystems add local lockdep coverage libnvdimm/bus: Fix wait_nvdimm_bus_probe_idle() ABBA deadlock libnvdimm/bus: Stop holding nvdimm_bus_list_mutex over __nd_ioctl() libnvdimm/bus: Prepare the nd_ioctl() path to be re-entrant libnvdimm/region: Register badblocks before namespaces libnvdimm/bus: Prevent duplicate device_unregister() calls drivers/base: Introduce kill_device()
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Masahiro Yamada authored
This is unused since commit 9f69a496 ("kbuild: split out *.mod out of {single,multi}-used-m rules"). Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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Masahiro Yamada authored
Running gen_compile_commands.py after building the kernel with allnoconfig gave this: $ ./scripts/gen_compile_commands.py WARNING: Found 449 entries. Have you compiled the kernel? Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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Toru Komatsu authored
This file is used by clangd to use language server protocol. It can be generated at each compile using scripts/gen_compile_commands.py. Therefore it is different depending on the environment and should be ignored. Signed-off-by:
Toru Komatsu <k0ma@utam0k.jp> Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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Masahiro Yamada authored
Commit 415008af ("docs-rst: convert lsm from DocBook to ReST") removed the last users of this macro. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com>
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block DMA segment fix from Jens Axboe: "Here's the virtual boundary segment size fix" * tag 'for-linus-20190726-2' of git://git.kernel.dk/linux-block: block: fix max segment size handling in blk_queue_virt_boundary
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinuxLinus Torvalds authored
Pull selinux fix from Paul Moore: "One small SELinux patch to add some proper bounds/overflow checking when adding a new sid/secid" * tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: check sidtab limit before adding a new entry
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- 26 Jul, 2019 9 commits
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Rob Herring authored
The path in the schema '$id' values are wrong. Fix them. Signed-off-by:
Rob Herring <robh@kernel.org>
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Maxime Ripard authored
Now that the examples are validated, the examples in the SID binding generates an error since the node names aren't one of the valid ones. Let's switch for one that is ok. Signed-off-by:
Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by:
Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The nvmem providers and consumers have a bunch of generic properties that are needed in a device tree. Add a YAML schemas for those. Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Maxime Ripard <maxime.ripard@bootlin.com> [Srini: Changed licence to (GPL-2.0 OR BSD-2-Clause)] Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by:
Rob Herring <robh@kernel.org>
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Thierry Reding authored
"Findfrom" is not a word. Replace the function synopsis by something that makes sense. Signed-off-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
Rob Herring <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Nine fixes: The most important core one is the dma_max_mapping_size fix that corrects the boot problem Gunter Roeck was having. A couple of other driver only fixes are significant, like the cxgbi selector support addition, the alua 2 second delay and the fdomain build fix" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG scsi: ibmvfc: fix WARN_ON during event pool release scsi: fcoe: fix a typo scsi: megaraid_sas: Make some functions static scsi: megaraid_sas: fix panic on loading firmware crashdump scsi: megaraid_sas: fix spelling mistake "megarid_sas" -> "megaraid_sas" scsi: core: fix the dma_max_mapping_size call scsi: fdomain: fix building pcmcia front-end scsi: target: cxgbit: add support for IEEE_8021QAZ_APP_SEL_STREAM selector
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Daniel Vetter: "Dave seems to collect an entire streak of things happening, so again me typing pull summary. Nothing nefarious here, most of the fixes are for new stuff or things users won't see. The amd-display patches are a bit different, and very much look like they should have at least some cc: stable tags. Might be amd is a bit too comfortable with their internal tree and not enough looking at upstream. Dave&me are looking into this, in case something needs rectified with process here. Also no intel fixes pull, but intel CI is general become rather good, still I guess expect a notch more for -rc3. Summary: amdgpu: - fixes for (new in 5.3) hw support (vega20, navi) - disable RAS - lots of display fixes all over (audio, DSC, dongle, clock mgr) ttm: - fix dma_free_attrs calls to appease dma debugging msm: - fixes for dma-api, locking debug and compiler splats core: - fix cmdline mode to not apply rotation if not specified (new in 5.3) - compiler warn fix" * tag 'drm-fixes-2019-07-26' of git://anongit.freedesktop.org/drm/drm: (46 commits) drm/amd/display: Set enabled to false at start of audio disable drm/amdgpu/smu: move fan rpm query into the asic specific code drm/amd/powerplay: custom peak clock freq for navi10 drm: silence variable 'conn' set but not used drm/msm: stop abusing dma_map/unmap for cache drm/msm/dpu: Correct dpu encoder spinlock initialization drm/msm: correct NULL pointer dereference in context_init drm/amd/display: handle active dongle port type is DP++ or DP case drm/amd/display: do not read link setting if edp not connected drm/amd/display: Increase size of audios array drm/amd/display: drop ASSERT() if eDP panel is not connected drm/amd/display: Only enable audio if speaker allocation exists drm/amd/display: Fix dc_create failure handling and 666 color depths drm/amd/display: allocate 4 ddc engines for RV2 drm/amd/display: put back front end initialization sequence drm/amd/display: Wait for flip to complete drm/amd/display: Change min_h_sync_width from 8 to 4 drm/amd/display: use encoder's engine id to find matched free audio device drm/amd/display: fix DMCU hang when going into Modern Standby drm/amd/display: Disable Audio on reinitialize hardware ...
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Christoph Hellwig authored
We should only set the max segment size to unlimited if we actually have a virt boundary. Otherwise we accidentally clear that limit when called from the SCSI midlayer, which always calls blk_queue_virt_boundary, even if that mask is 0. Fixes: 7ad388d8 ("scsi: core: add a host / host template field for the virt boundary") Reported-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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git://git.lwn.net/linuxLinus Torvalds authored
Pull documentation fixes from Jonathan Corbet: "This is mostly a set of follow-on fixes from Mauro fixing various fallout from the massive RST conversion; a few other small fixes as well" * tag 'docs-5.3-1' of git://git.lwn.net/linux: (21 commits) docs: phy: Drop duplicate 'be made' doc:it_IT: translations in process/ docs/vm: transhuge: fix typo in madvise reference doc:it_IT: rephrase statement doc:it_IT: align translation to mainline docs: load_config.py: ensure subdirs end with "/" docs: virtual: add it to the documentation body docs: remove extra conf.py files docs: load_config.py: avoid needing a conf.py just due to LaTeX docs scripts/sphinx-pre-install: seek for Noto CJK fonts for pdf output scripts/sphinx-pre-install: cleanup Gentoo checks scripts/sphinx-pre-install: fix latexmk dependencies scripts/sphinx-pre-install: don't use LaTeX with CentOS 7 scripts/sphinx-pre-install: fix script for RHEL/CentOS docs: conf.py: only use CJK if the font is available docs: conf.py: add CJK package needed by translations docs: pdf: add all Documentation/*/index.rst to PDF output docs: fix broken doc references due to renames docs: power: add it to to the main documentation index docs: powerpc: convert docs to ReST and rename to *.rst ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "There's more here than we usually have at this stage, but that's mainly down to the stacktrace changes which came in slightly too late for the merge window. Summary: - Big bad batch of MAINTAINERS updates - Fix handling of SP alignment fault exceptions - Fix PSTATE.SSBS handling on heterogeneous systems - Fix fallout from moving to the generic vDSO implementation - Fix stack unwinding in the face of frame corruption - Fix off-by-one in IORT code - Minor SVE cleanups" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id() arm64: entry: SP Alignment Fault doesn't write to FAR_EL1 arm64: Force SSBS on context switch MAINTAINERS: Update my email address MAINTAINERS: Update my email address MAINTAINERS: Fix spelling mistake in my name MAINTAINERS: Update my email address to @kernel.org arm64: mm: Drop pte_huge() arm64/sve: Fix a couple of magic numbers for the Z-reg count arm64/sve: Factor out FPSIMD to SVE state conversion arm64: stacktrace: Better handle corrupted stacks arm64: stacktrace: Factor out backtrace initialisation arm64: stacktrace: Constify stacktrace.h functions arm64: vdso: Cleanup Makefiles arm64: vdso: fix flip/flop vdso build bug arm64: vdso: Fix population of AT_SYSINFO_EHDR for compat vdso
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