kernel/arch/mips/include/asm, branch linux-5.1.y

MIPS: ath79: fix ar933x uart parity mode

2019-07-26T07:12:20Z

[ Upstream commit db13a5ba2732755cf13320f3987b77cf2a71e790 ] While trying to get the uart with parity working I found setting even parity enabled odd parity insted. Fix the register settings to match the datasheet of AR9331. A similar patch was created by 8devices, but not sent upstream. https://github.com/8devices/openwrt-8devices/commit/77c5586ade3bb72cda010afad3f209ed0c98ea7c Signed-off-by: Stefan Hellermann Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Signed-off-by: Sasha Levin

irqchip/mips-gic: Use the correct local interrupt map registers

2019-07-03T11:13:40Z

commit 6d4d367d0e9ffab4d64a3436256a6a052dc1195d upstream. The MIPS GIC contains a block of registers used to map local interrupts to a particular CPU interrupt pin. Since these registers are found at a consecutive range of addresses we access them using an index, via the (read|write)_gic_v[lo]_map accessor functions. We currently use values from enum mips_gic_local_interrupt as those indices. Unfortunately whilst enum mips_gic_local_interrupt provides the correct offsets for bits in the pending & mask registers, the ordering of the map registers is subtly different... Compared with the ordering of pending & mask bits, the map registers move the FDC from the end of the list to index 3 after the timer interrupt. As a result the performance counter & software interrupts are therefore at indices 4-6 rather than indices 3-5. Notably this causes problems with performance counter interrupts being incorrectly mapped on some systems, and presumably will also cause problems for FDC interrupts. Introduce a function to map from enum mips_gic_local_interrupt to the index of the corresponding map register, and use it to ensure we access the map registers for the correct interrupts. Signed-off-by: Paul Burton Fixes: a0dc5cb5e31b ("irqchip: mips-gic: Simplify gic_local_irq_domain_map()") Fixes: da61fcf9d62a ("irqchip: mips-gic: Use irq_cpu_online to (un)mask all-VP(E) IRQs") Reported-and-tested-by: Archer Yan Cc: Thomas Gleixner Cc: Jason Cooper Cc: stable@vger.kernel.org # v4.14+ Signed-off-by: Marc Zyngier Signed-off-by: Greg Kroah-Hartman

MIPS: mark ginvt() as __always_inline

2019-06-25T03:34:48Z

[ Upstream commit 6074c33c6b2eabc70867ef76d57ca256e9ea9da7 ] To meet the 'i' (immediate) constraint for the asm operands, this function must be always inlined. Signed-off-by: Masahiro Yamada Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle Cc: James Hogan Cc: linux-kernel@vger.kernel.org Signed-off-by: Sasha Levin

syscalls: Remove start and number from syscall_get_arguments() args

2019-04-05T13:26:43Z

At Linux Plumbers, Andy Lutomirski approached me and pointed out that the function call syscall_get_arguments() implemented in x86 was horribly written and not optimized for the standard case of passing in 0 and 6 for the starting index and the number of system calls to get. When looking at all the users of this function, I discovered that all instances pass in only 0 and 6 for these arguments. Instead of having this function handle different cases that are never used, simply rewrite it to return the first 6 arguments of a system call. This should help out the performance of tracing system calls by ptrace, ftrace and perf. Link: http://lkml.kernel.org/r/20161107213233.754809394@goodmis.org Cc: Oleg Nesterov Cc: Kees Cook Cc: Andy Lutomirski Cc: Dominik Brodowski Cc: Dave Martin Cc: "Dmitry V. Levin" Cc: x86@kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-hexagon@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: nios2-dev@lists.rocketboards.org Cc: openrisc@lists.librecores.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: linux-xtensa@linux-xtensa.org Cc: linux-arch@vger.kernel.org Acked-by: Paul Burton # MIPS parts Acked-by: Max Filippov # For xtensa changes Acked-by: Will Deacon # For the arm64 bits Reviewed-by: Thomas Gleixner # for x86 Reviewed-by: Dmitry V. Levin Reported-by: Andy Lutomirski Signed-off-by: Steven Rostedt (VMware)

Merge tag 'mips_fixes_5.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2019-03-19T17:50:15Z

Pull MIPS fixes from Paul Burton: "A small batch of MIPS fixes for 5.1: - An interrupt masking fix for Loongson-based Lemote 2F systems (fixing a regression from v3.19) - A relocation fix for configurations in which the devicetree is stored in an ELF section (fixing a regression from v4.7) - Fix jump labels for MIPSr6 kernels where they previously could inadvertently place a control transfer instruction in a forbidden slot & take unexpected exceptions (fixing MIPSr6 support added in v4.0) - Extend an existing USB power workaround for the Netgear WNDR3400 to v2 boards in addition to the v3 ones that already used it - Remove the custom MIPS32 definition of __kernel_fsid_t to make it consistent with MIPS64 & every other architecture, in particular resolving issues for code which tries to print the val field whose type previously differed (though had identical memory layout)" * tag 'mips_fixes_5.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: Remove custom MIPS32 __kernel_fsid_t type mips: bcm47xx: Enable USB power on Netgear WNDR3400v2 MIPS: Fix kernel crash for R6 in jump label branch function MIPS: Ensure ELF appended dtb is relocated mips: loongson64: lemote-2f: Add IRQF_NO_SUSPEND to "cascade" irqaction.

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2019-03-15T22:00:28Z

Pull KVM updates from Paolo Bonzini: "ARM: - some cleanups - direct physical timer assignment - cache sanitization for 32-bit guests s390: - interrupt cleanup - introduction of the Guest Information Block - preparation for processor subfunctions in cpu models PPC: - bug fixes and improvements, especially related to machine checks and protection keys x86: - many, many cleanups, including removing a bunch of MMU code for unnecessary optimizations - AVIC fixes Generic: - memcg accounting" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (147 commits) kvm: vmx: fix formatting of a comment KVM: doc: Document the life cycle of a VM and its resources MAINTAINERS: Add KVM selftests to existing KVM entry Revert "KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range()" KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char() KVM: PPC: Fix compilation when KVM is not enabled KVM: Minor cleanups for kvm_main.c KVM: s390: add debug logging for cpu model subfunctions KVM: s390: implement subfunction processor calls arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2 KVM: arm/arm64: Remove unused timer variable KVM: PPC: Book3S: Improve KVM reference counting KVM: PPC: Book3S HV: Fix build failure without IOMMU support Revert "KVM: Eliminate extra function calls in kvm_get_dirty_log_protect()" x86: kvmguest: use TSC clocksource if invariant TSC is exposed KVM: Never start grow vCPU halt_poll_ns from value below halt_poll_ns_grow_start KVM: Expose the initial start value in grow_halt_poll_ns() as a module parameter KVM: grow_halt_poll_ns() should never shrink vCPU halt_poll_ns KVM: x86/mmu: Consolidate kvm_mmu_zap_all() and kvm_mmu_zap_mmio_sptes() KVM: x86/mmu: WARN if zapping a MMIO spte results in zapping children ...

MIPS: Fix kernel crash for R6 in jump label branch function

2019-03-11T18:11:11Z

Insert Branch instruction instead of NOP to make sure assembler don't patch code in forbidden slot. In jump label function, it might be possible to patch Control Transfer Instructions(CTIs) into forbidden slot, which will generate Reserved Instruction exception in MIPS release 6. Signed-off-by: Archer Yan Reviewed-by: Paul Burton [paul.burton@mips.com: - Add MIPS prefix to subject. - Mark for stable from v4.0, which introduced r6 support, onwards.] Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: stable@vger.kernel.org # v4.0+

Merge tag 'dma-mapping-5.1' of git://git.infradead.org/users/hch/dma-mapping

2019-03-10T18:54:48Z

Pull DMA mapping updates from Christoph Hellwig: - add debugfs support for dumping dma-debug information (Corentin Labbe) - Kconfig cleanups (Andy Shevchenko and me) - debugfs cleanups (Greg Kroah-Hartman) - improve dma_map_resource and use it in the media code - arch_setup_dma_ops / arch_teardown_dma_ops cleanups - various small cleanups and improvements for the per-device coherent allocator - make the DMA mask an upper bound and don't fail "too large" dma mask in the remaning two architectures - this will allow big driver cleanups in the following merge windows * tag 'dma-mapping-5.1' of git://git.infradead.org/users/hch/dma-mapping: (21 commits) Documentation/DMA-API-HOWTO: update dma_mask sections sparc64/pci_sun4v: allow large DMA masks sparc64/iommu: allow large DMA masks sparc64: refactor the ali DMA quirk ccio: allow large DMA masks dma-mapping: remove the DMA_MEMORY_EXCLUSIVE flag dma-mapping: remove dma_mark_declared_memory_occupied dma-mapping: move CONFIG_DMA_CMA to kernel/dma/Kconfig dma-mapping: improve selection of dma_declare_coherent availability dma-mapping: remove an incorrect __iommem annotation of: select OF_RESERVED_MEM automatically device.h: dma_mem is only needed for HAVE_GENERIC_DMA_COHERENT mfd/sm501: depend on HAS_DMA dma-mapping: add a kconfig symbol for arch_teardown_dma_ops availability dma-mapping: add a kconfig symbol for arch_setup_dma_ops availability dma-mapping: move debug configuration options to kernel/dma dma-debug: add dumping facility via debugfs dma: debug: no need to check return value of debugfs_create functions videobuf2: replace a layering violation with dma_map_resource dma-mapping: don't BUG when calling dma_map_resource on RAM ...

Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-03-05T22:08:26Z

Pull year 2038 updates from Thomas Gleixner: "Another round of changes to make the kernel ready for 2038. After lots of preparatory work this is the first set of syscalls which are 2038 safe: 403 clock_gettime64 404 clock_settime64 405 clock_adjtime64 406 clock_getres_time64 407 clock_nanosleep_time64 408 timer_gettime64 409 timer_settime64 410 timerfd_gettime64 411 timerfd_settime64 412 utimensat_time64 413 pselect6_time64 414 ppoll_time64 416 io_pgetevents_time64 417 recvmmsg_time64 418 mq_timedsend_time64 419 mq_timedreceiv_time64 420 semtimedop_time64 421 rt_sigtimedwait_time64 422 futex_time64 423 sched_rr_get_interval_time64 The syscall numbers are identical all over the architectures" * 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) riscv: Use latest system call ABI checksyscalls: fix up mq_timedreceive and stat exceptions unicore32: Fix __ARCH_WANT_STAT64 definition asm-generic: Make time32 syscall numbers optional asm-generic: Drop getrlimit and setrlimit syscalls from default list 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option compat ABI: use non-compat openat and open_by_handle_at variants y2038: add 64-bit time_t syscalls to all 32-bit architectures y2038: rename old time and utime syscalls y2038: remove struct definition redirects y2038: use time32 syscall names on 32-bit syscalls: remove obsolete __IGNORE_ macros y2038: syscalls: rename y2038 compat syscalls x86/x32: use time64 versions of sigtimedwait and recvmmsg timex: change syscalls to use struct __kernel_timex timex: use __kernel_timex internally sparc64: add custom adjtimex/clock_adjtime functions time: fix sys_timer_settime prototype time: Add struct __kernel_timex time: make adjtime compat handling available for 32 bit ...

Merge tag 'mips_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2019-03-05T19:28:25Z

Pull MIPS updates from Paul Burton: - Support for the MIPSr6 MemoryMapID register & Global INValidate TLB (GINVT) instructions, allowing for more efficient TLB maintenance when running on a CPU such as the I6500 that supports these. - Enable huge page support for MIPS64r6. - Optimize post-DMA cache sync by removing that code entirely for kernel configurations in which we know it won't be needed. - The number of pages allocated for interrupt stacks is now calculated correctly, where before we would wastefully allocate too much memory in some configurations. - The ath79 platform migrates to devicetree. - The bcm47xx platform sees fixes for the Buffalo WHR-G54S board. - The ingenic/jz4740 platform gains support for appended devicetrees. - The cavium_octeon, lantiq, loongson32 & sgi-ip27 platforms all see cleanups as do various pieces of core architecture code. * tag 'mips_5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (66 commits) MIPS: lantiq: Remove separate GPHY Firmware loader MIPS: ingenic: Add support for appended devicetree MIPS: SGI-IP27: rework HUB interrupts MIPS: SGI-IP27: do boot CPU init later MIPS: SGI-IP27: do xtalk scanning later MIPS: SGI-IP27: use pr_info/pr_emerg and pr_cont to fix output MIPS: SGI-IP27: clean up bridge access and header files MIPS: SGI-IP27: get rid of volatile and hubreg_t MIPS: irq: Allocate accurate order pages for irq stack MIPS: dma-noncoherent: Remove bogus condition in dma_sync_phys() MIPS: eBPF: Remove REG_32BIT_ZERO_EX MIPS: eBPF: Always return sign extended 32b values MIPS: CM: Fix indentation MIPS: BCM47XX: Fix/improve Buffalo WHR-G54S support MIPS: OCTEON: program rx/tx-delay always from DT MIPS: OCTEON: delete board-specific link status MIPS: OCTEON: don't lie about interface type of CN3005 board MIPS: OCTEON: warn if deprecated link status is being used MIPS: OCTEON: add fixed-link nodes to in-kernel device tree MIPS: Delete unused flush_cache_sigtramp() ...