- 17 5月, 2019 16 次提交
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由 Andreas Schwab 提交于
When a user mode process accesses an address in the vmalloc area do_page_fault tries to unlock the mmap semaphore when it isn't locked. Signed-off-by: NAndreas Schwab <schwab@suse.de> [Palmer: Duplicated code instead of a goto] Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Yash Shah 提交于
The driver currently supports only SiFive FU540-C000 platform. The initial version of L2 cache controller driver includes: - Initial configuration reporting at boot up. - Support for ECC related functionality. Signed-off-by: NYash Shah <yash.shah@sifive.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Yash Shah 提交于
Add device tree bindings for SiFive FU540 L2 cache controller driver Signed-off-by: NYash Shah <yash.shah@sifive.com> Reviewed-by: NRob Herring <robh@kernel.org> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Palmer Dabbelt 提交于
This is almost entirely a comment. Signed-off-by: NPalmer Dabbelt <palmer@sifive.com> Reviewed-by: NAnup Patel <anup@brainfault.org>
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由 Vincent Chen 提交于
The kernel module is loaded into vmalloc region which is located below to the PAGE_OFFSET. Hence the condition, pc < PAGE_OFFSET, in the is_valid_bugaddr() will filter out all trap exceptions triggered by kernel module. To support BUG() in kernel module, the condition is changed to pc < VMALLOC_START. Signed-off-by: NVincent Chen <vincentc@andestech.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Vincent Chen 提交于
The macro __BUG_INSN currently is defined as the "ebreak" opcode. The is_valid_bugaddr() function compares the instruction pointed to by $sepc with macro __BUG_INSN to check whether the current trap exception is caused by an "ebreak" instruction. However, this check flow is possibly erroneous because if C extension is supported, the expected trap instruction "ebreak" is possibly translated to "c.ebreak" by the assembler. Therefore, it requires a mechanism to distinguish the length of the instruction in $spec and compare it to the correct trap instruction. Signed-off-by: NVincent Chen <vincentc@andestech.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Vincent Chen 提交于
The WARN() related function will trigger a debug exception. This can help developers to analyze the cause of WARN() because if the debugger is connected, the control flow will be transferred to debugging environment. Signed-off-by: NVincent Chen <vincentc@andestech.com> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Gary Guo 提交于
Currently sbi_remote_sfence_vma{,_asid} does not pass their arguments to SBI at all, which is semantically incorrect. Neither BBL nor OpenSBI is using these arguments at the moment, and they just do a global flush instead. However we still need to provide correct arguments. Signed-off-by: NGary Guo <gary@garyguo.net> Reviewed-by: NAnup Patel <anup@brainfault.org> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Gary Guo 提交于
switch_mm is an expensive operations that has two users. flush_icache_deferred is only called within switch_mm and can be moved together. The function is expected to be more complicated when ASID support is added, so clean up eagerly. By moving them to a separate file we also removes some excessive dependency of tlbflush.h and cacheflush.h. Signed-off-by: NGary Guo <gary@garyguo.net> Reviewed-by: NAnup Patel <anup@brainfault.org> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Gary Guo 提交于
Currently, flush_icache_all is macro-expanded into a SBI call, yet no asm/sbi.h is included in asm/cacheflush.h. This could be moved to mm/cacheflush.c instead (SBI call will dominate performance-wise and there is no worry to not have it inlined. Currently, flush_icache_mm stays in kernel/smp.c, which looks like a hack to prevent it from being compiled when CONFIG_SMP=n. It should also be in mm/cacheflush.c. Signed-off-by: NGary Guo <gary@garyguo.net> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Anup Patel 提交于
The Linux kernel will auto-disables all boot consoles whenever it gets a preferred real console. Currently on RISC-V systems, if we have a real console which is not RISCV SBI console then boot consoles (such as earlycon=sbi) are not auto-disabled when a real console (ttyS0 or ttySIF0) is available. This results in duplicate prints at boot-time after kernel starts using real console (i.e. ttyS0 or ttySIF0) if "earlycon=" kernel parameter was passed by bootloader. The reason for above issue is that RISCV SBI console always adds itself as preferred console which is causing other real consoles to be not used as preferred console. Ideally "console=" kernel parameter passed by bootloaders should be the one selecting a preferred real console. This patch fixes above issue by not forcing RISCV SBI console as preferred console. Fixes: afa6b1cc ("tty: New RISC-V SBI console driver") Cc: stable@vger.kernel.org Signed-off-by: NAnup Patel <anup.patel@wdc.com> Reviewed-by: NAtish Patra <atish.patra@wdc.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Anup Patel 提交于
We should prefer accessing CSRs using their CSR numbers because: 1. It compiles fine with older toolchains. 2. We can use latest CSR names in #define macro names of CSR numbers as-per RISC-V spec. 3. We can access newly added CSRs even if toolchain does not recognize newly addes CSRs by name. Signed-off-by: NAnup Patel <anup.patel@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Anup Patel 提交于
This patch adds SCAUSE interrupt flag and SCAUSE interrupt related defines to asm/csr.h. We also use these defines in kernel/irq.c and express SIE/SIP flags in-terms of SCAUSE interrupt causes. Signed-off-by: NAnup Patel <anup.patel@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Anup Patel 提交于
The spacing between macro name and value is not consistent in asm/csr.h. This patch beautifies asm/csr.h by using tabs to align macro values instead of spaces. Signed-off-by: NAnup Patel <anup.patel@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Atish Patra 提交于
While working on the patches, I found some minor checkpatch issues. Signed-off-by: NAtish Patra <atish.patra@wdc.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Atish Patra 提交于
If nr_cpus command line option is set, maximum possible cpu should be set to that value. Signed-off-by: NAtish Patra <atish.patra@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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- 01 5月, 2019 2 次提交
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由 Atish Patra 提交于
nosmp command line option sets max_cpus to zero. No secondary harts will boot if this is enabled. But present cpu mask will still point to all possible masks. Fix present cpu mask for nosmp usecase. Signed-off-by: NAtish Patra <atish.patra@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Atish Patra 提交于
OF/DT core has a hook for architecture specific logical cpuid to hartid mapping. By implementing this, we can pass the logical cpu id to cpu node parsing functions. Fix the instances where logical cpuid is expected as an argument in of_get_cpu_node. Signed-off-by: NAtish Patra <atish.patra@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NSudeep Holla <sudeep.holla@arm.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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- 30 4月, 2019 1 次提交
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由 Nick Desaulniers 提交于
Towards the goal of removing cc-ldoption, it seems that --hash-style= was added to binutils 2.17.50.0.2 in 2006. The minimal required version of binutils for the kernel according to Documentation/process/changes.rst is 2.20. Link: https://gcc.gnu.org/ml/gcc/2007-01/msg01141.html Cc: clang-built-linux@googlegroups.com Suggested-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: NNick Desaulniers <ndesaulniers@google.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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- 26 4月, 2019 12 次提交
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由 Christoph Hellwig 提交于
This way any override of pm_power_off also affects the halt path and we don't need additional infrastructure for it. Also remove the pm_power_off export - at least for now we don't have any modular drivers overriding it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NAtish Patra <atish.patra@wdc.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
This has been helpful when debugging my pending nommu port. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NNick Kossifidis <mick@ics.forth.gr> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
No need to have two names for the same thing. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
HAVE_FUNCTION_GRAPH_RET_ADDR_PTR is always defined for RISC-V. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
No need to pass the hartid, and the dtb address passed is a physical address, so don't pretend it is a kernel pointer. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
We don't need THREAD_SIZE in asm-offsets.c as we can just calculate the value of init_thread_union + THREAD_SIZE using cpp, just like we do a few lines above. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NAtish Patra <atish.patra@wdc.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
Just in case an old interrupt is pending make sure we clear everything asserted before this kernel started. Based on similar M-mode code in opensbi. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NNick Kossifidis <mick@ics.forth.gr> Reviewed-by: NAtish Patra <atish.patra@wdc.com> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
This option is always enabled, and not supporting the A extensions would create a complete ABI trainwreck, so there is no point in even slightly encouraging such an idea by keeping this unselectable code around. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
RISC-V is always little endian. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
This matches what other heavily used architectures do, and will allow us to easily use <asm-generic/uaccess.h> for the nommu case. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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由 Guo Ren 提交于
The function of do_notify_resume called by entry.S could be entered in loop when SIGPENDING was setted again before sret. So we must add prevent code to make syscall restart (regs->sepc -= 0x4) or it may re-execute unexpected instructions. Just like in_syscall & forget_syscall used by arm. Signed-off-by: NGuo Ren <ren_guo@c-sky.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NPalmer Dabbelt <palmer@sifive.com>
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- 22 4月, 2019 1 次提交
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由 Linus Torvalds 提交于
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- 21 4月, 2019 8 次提交
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git://git.linux-nfs.org/projects/trondmy/linux-nfs由 Linus Torvalds 提交于
Pull NFS client bugfix from Trond Myklebust: "Fix a regression in which an RPC call can be tagged with an error despite the transmission being successful" * tag 'nfs-for-5.1-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Ignore queue transmission errors on successful transmission
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi由 Linus Torvalds 提交于
Pull SCSI fixes from James Bottomley: "Three minor fixes: two obvious ones in drivers and a fix to the SG_IO path to correctly return status on error" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: aic7xxx: fix EISA support Revert "scsi: fcoe: clear FC_RP_STARTED flags when receiving a LOGO" scsi: core: set result when the command cannot be dispatched
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git://git.kernel.dk/linux-block由 Linus Torvalds 提交于
Pull block fixes from Jens Axboe: "A set of small fixes that should go into this series. This contains: - Removal of unused queue member (Hou) - Overflow bvec fix (Ming) - Various little io_uring tweaks (me) - kthread parking - Only call cpu_possible() for verified CPU - Drop unused 'file' argument to io_file_put() - io_uring_enter vs io_uring_register deadlock fix - CQ overflow fix - BFQ internal depth update fix (me)" * tag 'for-linus-20190420' of git://git.kernel.dk/linux-block: block: make sure that bvec length can't be overflow block: kill all_q_node in request_queue io_uring: fix CQ overflow condition io_uring: fix possible deadlock between io_uring_{enter,register} io_uring: drop io_file_put() 'file' argument bfq: update internal depth state when queue depth changes io_uring: only test SQPOLL cpu after we've verified it io_uring: park SQPOLL thread if it's percpu
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git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux由 Linus Torvalds 提交于
Pill i3c fixes from Boris Brezillon: - fix the random PID check - fix the disable controller logic in the designware driver - fix I3C entry in MAINTAINERS * tag 'i3c/fixes-for-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: MAINTAINERS: Fix the I3C entry i3c: dw: Fix dw_i3c_master_disable controller by using correct mask i3c: Fix the verification of random PID
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound由 Linus Torvalds 提交于
Pull sound fixes from Takashi Iwai: "Two core fixes for long-standing bugs for the races at concurrent device creation and deletion that were (unsurprisingly) spotted by syzkaller with usb-fuzzer. The rest are usual small HD-audio fixes" * tag 'sound-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek - add two more pin configuration sets to quirk table ALSA: core: Fix card races between register and disconnect ALSA: info: Fix racy addition/deletion of nodes ALSA: hda: Initialize power_state field properly
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timer fixes from Ingo Molnar: "Misc clocksource driver fixes, and a sched-clock wrapping fix" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers/sched_clock: Prevent generic sched_clock wrap caused by tick_freeze() clocksource/drivers/timer-ti-dm: Remove omap_dm_timer_set_load_start clocksource/drivers/oxnas: Fix OX820 compatible clocksource/drivers/arm_arch_timer: Remove unneeded pr_fmt macro clocksource/drivers/npcm: select TIMER_OF
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull perf fixes from Ingo Molnar: "Misc fixes: - various tooling fixes - kretprobe fixes - kprobes annotation fixes - kprobes error checking fix - fix the default events for AMD Family 17h CPUs - PEBS fix - AUX record fix - address filtering fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kprobes: Avoid kretprobe recursion bug kprobes: Mark ftrace mcount handler functions nokprobe x86/kprobes: Verify stack frame on kretprobe perf/x86/amd: Add event map for AMD Family 17h perf bpf: Return NULL when RB tree lookup fails in perf_env__find_btf() perf tools: Fix map reference counting perf evlist: Fix side band thread draining perf tools: Check maps for bpf programs perf bpf: Return NULL when RB tree lookup fails in perf_env__find_bpf_prog_info() tools include uapi: Sync sound/asound.h copy perf top: Always sample time to satisfy needs of use of ordered queuing perf evsel: Use hweight64() instead of hweight_long(attr.sample_regs_user) tools lib traceevent: Fix missing equality check for strcmp perf stat: Disable DIR_FORMAT feature for 'perf stat record' perf scripts python: export-to-sqlite.py: Fix use of parent_id in calls_view perf header: Fix lock/unlock imbalances when processing BPF/BTF info perf/x86: Fix incorrect PEBS_REGS perf/ring_buffer: Fix AUX record suppression perf/core: Fix the address filtering fix kprobes: Fix error check when reusing optimized probes
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86 fixes from Ingo Molnar: "Misc fixes all over the place: a console spam fix, section attributes fixes, a KASLR fix, a TLB stack-variable alignment fix, a reboot quirk, boot options related warnings fix, an LTO fix, a deadlock fix and an RDT fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu/intel: Lower the "ENERGY_PERF_BIAS: Set to normal" message's log priority x86/cpu/bugs: Use __initconst for 'const' init data x86/mm/KASLR: Fix the size of the direct mapping section x86/Kconfig: Fix spelling mistake "effectivness" -> "effectiveness" x86/mm/tlb: Revert "x86/mm: Align TLB invalidation info" x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T x86/mm: Prevent bogus warnings with "noexec=off" x86/build/lto: Fix truncated .bss with -fdata-sections x86/speculation: Prevent deadlock on ssb_state::lock x86/resctrl: Do not repeat rdtgroup mode initialization
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