kernel.git/arch/mips/Kconfig, branch linux-4.11.y

MIPS: Loongson-3: Select MIPS_L1_CACHE_SHIFT_6

2017-05-25T13:46:27Z

commit 17c99d9421695a0e0de18bf1e7091d859e20ec1d upstream. Some newer Loongson-3 have 64 bytes cache lines, so select MIPS_L1_CACHE_SHIFT_6. Signed-off-by: Huacai Chen Cc: John Crispin Cc: Steven J . Hill Cc: Fuxin Zhang Cc: Zhangjin Wu Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15755/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman

MIPS: Force o32 fp64 support on 32bit MIPS64r6 kernels

2017-03-08T10:16:25Z

When a 32-bit kernel is configured to support MIPS64r6 (CPU_MIPS64_R6), MIPS_O32_FP64_SUPPORT won't be selected as it should be because MIPS32_O32 is disabled (o32 is already the default ABI available on 32-bit kernels). This results in userland FP breakage as CP0_Status.FR is read-only 1 since r6 (when an FPU is present) so __enable_fpu() will fail to clear FR. This causes the FPU emulator to get used which will incorrectly emulate 32-bit FPU registers. Force o32 fp64 support in this case by also selecting MIPS_O32_FP64_SUPPORT from CPU_MIPS64_R6 if 32BIT. Fixes: 4e9d324d4288 ("MIPS: Require O32 FP64 support for MIPS64 with O32 compat") Signed-off-by: James Hogan Reviewed-by: Paul Burton Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: # 4.0.x- Patchwork: https://patchwork.linux-mips.org/patch/15310/ Signed-off-by: James Hogan

Merge tag 'mips_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips

2017-02-21T22:21:11Z

Pull MIPS updates from James Hogan: "Here's the main MIPS pull request for 4.11. It contains a few new features such as IRQ stacks, cacheinfo support, and KASLR for Octeon CPUs, and a variety of smaller improvements and fixes including devicetree additions, kexec cleanups, microMIPS stack unwinding fixes, and a bunch of build fixes to clean up continuous integration builds. Its all been in linux-next for at least a couple of days, most of it far longer. Miscellaneous: - Add IRQ stacks - Add cacheinfo support - Add "uzImage.bin" zboot target - Unify performance counter definitions - Export various (mainly assembly) symbols alongside their definitions - Audit and remove unnecessary uses of module.h kexec & kdump: - Lots of improvements and fixes - Add correct copy_regs implementations - Add debug logging of new kernel information Security: - Use Makefile.postlink to insert relocations into vmlinux - Provide plat_post_relocation hook (used for Octeon KASLR) - Add support for tuning mmap randomisation - Relocate DTB microMIPS: - A load of unwind fixes - Add some missing .insn to fix link errors MIPSr6: - Fix MULTU/MADDU/MSUBU sign extension in r2 emulation - Remove r2_emul_return and use ERETNC unconditionally on MIPSr6 - Allow pre-r6 emulation on SMP MIPSr6 kernels Cache management: - Treat physically indexed dcache as non-aliasing - Add return errors to protected cache ops for KVM - CM3: Ensure L1 & L2 cache ECC checking matches - CM3: Indicate inclusive caches - I6400: Treat dcache as physically indexed Memory management: - Ensure bootmem doesn't corrupt reserved memory - Export some TLB exception generation functions for KVM OF: - NULL check initial_boot_params before use in of_scan_flat_dt() - Fix unaligned access in of_alias_scan() SMP: - CPS: Don't BUG if a CPU fails to start Other fixes: - Fix longstanding 64-bit IP checksum carry bug - Fix KERN_CONT fallout in cpu-bugs64.c and sync-r4k.c - Update defconfigs for NF_CT_PROTO_DCCP, DPLITE, CPU_FREQ_STAT,SCSI_DH changes - Disable certain builtin compiler options, stack-check (whole kernel), asynchronous-unwind-tables (VDSO). - A bunch of build fixes from kernelci.org testing - Various other minor cleanups & corrections BMIPS: - Migrate interrupts during bmips_cpu_disable - BCM47xx: Add Luxul devices - BCM47xx: Fix Asus WL-500W button inversion - BCM7xxx: Add SPI device nodes Generic (multiplatform): - Add kexec DTB passing - Fix big endian - Add cpp_its_S in ksym_dep_filter to silence build warning IP22: - Reformat inline assembler code to modern standards - Fix binutils 2.25 build error IP27: - Fix duplicate CAC_BASE definition build error - Disable qlge driver to workaround broken compiler Lantiq: - Refresh defconfig and activate more drivers - Lock DMA register access - Fix cascading IRQ setup - Fix build of VPE loader - xway: Fix ethernet packet header corruption over reboot Loongson1 - Add watchdog support - 1B: Reduce DEFAULT_MEMSIZE to 64MB - 1B: Change OSC clock name to match rest of kernel - 1C: Remove ARCH_WANT_OPTIONAL_GPIOLIB Octeon: - Add KASLR support - Support Octeon III USB controller - Fix large copy_from_user corner case - Enable devtmpfs in defconfig Netlogic: - Fix non-default XLR build error due to netlogic,xlp-pic code - Fix assembler warning from smpboot.S pic32mzda: - Fix linker error when early printk is disabled Pistachio: - Add base device tree - Add Ci40 "Marduk" device tree Ralink: - Support raw appended DTB - Add missing I2C & I2S clocks - Add missing pinmux and fix pinmux function name typo - Add missing clk_round_rate() - Clean up prom_init() - MT7621: Set SoC type - MT7621: Support highmem TXx9: - Modernize printing of kernel messages and resolve KERN_CONT fallout - 7segled: use permission-specific DEVICE_ATTR variants XilFPGA: - Add IRQ controller and UART IRQ - Add AXI I2C and emaclite to DT & defconfig" * tag 'mips_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips: (148 commits) MIPS: VDSO: Explicitly use -fno-asynchronous-unwind-tables MIPS: BCM47XX: Fix button inversion for Asus WL-500W MIPS: DTS: Add img directory to Makefile MIPS: ip27: Disable qlge driver in defconfig MIPS: pic32mzda: Fix linker error for pic32_get_pbclk() MIPS: Lantiq: Keep ethernet enabled during boot MIPS: OCTEON: Fix copy_from_user fault handling for large buffers MIPS: Fix special case in 64 bit IP checksumming. MIPS: OCTEON: Enable DEVTMPFS MIPS: lantiq: Set physical_memsize MIPS: sysmips: Remove duplicated include from syscall.c Kbuild: Add cpp_its_S in ksym_dep_filter MIPS: Audit and remove any unnecessary uses of module.h MIPS: Unify perf counter register definitions MIPS: Disable stack checks on MIPS kernels MIPS: OCTEON: Platform support for OCTEON III USB controller MIPS: Lantiq: Fix cascaded IRQ setup MIPS: sync-r4k: Fix KERN_CONT fallout MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch MIPS: Fix distclean with Makefile.postlink ...

BMIPS: Enable prerequisites for CPUfreq in MIPS Kconfig.

2017-02-09T00:22:44Z

Turn on CPU_SUPPORTS_CPUFREQ and MIPS_EXTERNAL_TIMER for BMIPS. Signed-off-by: Markus Mayer Acked-by: Florian Fainelli Signed-off-by: Rafael J. Wysocki

MIPS: Generic: Fix big endian CPUs on generic machine

2017-01-25T01:51:12Z

Big endian CPUs require SWAP_IO_SPACE enabled to swap accesses to little endian peripherals. Without this patch, big endian kernels fail to communicate with little endian periperals, such as PCI devices, on QEMU and FPGA based platforms. Signed-off-by: Matt Redfearn Fixes: eed0eabd12ef ("MIPS: generic: Introduce generic DT-based board support") Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15105/ Signed-off-by: Ralf Baechle

MIPS: Kconfig: Fix indentation for kexec-related entries

2017-01-03T15:34:44Z

Kconfig entries are not aligned properly, so remove incorrect whitespace. Signed-off-by: Marcin Nowakowski Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14631/ Signed-off-by: Ralf Baechle

MIPS: Add support for ARCH_MMAP_RND_{COMPAT_}BITS

2017-01-03T15:34:43Z

arch_mmap_rnd() uses hard-coded limits of 16MB for the randomisation of mmap within 32bit processes and 256MB in 64bit processes. Since v4.4 other arches support tuning this value in /proc/sys/vm/mmap_rnd_bits. Add support for this to MIPS. Set the minimum(default) number of bits randomisation for 32bit to 8 - which with 4k pagesize is unchanged from the current 16MB total randomness. The minimum(default) for 64bit is 12bits, again with 4k pagesize this is the same as the current 256MB. This patch is necessary for MIPS32 to pass the Android CTS tests, with the number of random bits set to 15. Signed-off-by: Matt Redfearn Reviewed-by: Kees Cook Cc: Paul Gortmaker Cc: Daniel Cashman Cc: Andrew Morton Cc: linux-mips@linux-mips.org Cc: kernel-hardening@lists.openwall.com Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14617/ Signed-off-by: Ralf Baechle

MIPS: Allow pre-r6 emulation on SMP MIPSr6 kernels

2017-01-03T15:34:42Z

There's no reason for the pre-r6 instruction emulation code to be limited to uniprocessor kernels. We already emulate atomic memory access instructions in a way that works for SMP systems, and nothing else should be affected. Remove the artificial limitation, allowing pre-r6 instruction emulation to be used with SMP kernels. Signed-off-by: Paul Burton Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14410/ Signed-off-by: Ralf Baechle

MIPS: Loongson1C: Remove ARCH_WANT_OPTIONAL_GPIOLIB

2017-01-03T15:34:40Z

This patch removes ARCH_WANT_OPTIONAL_GPIOLIB due to upstream changes. Signed-off-by: Kelvin Cheung Acked-by: Linus Walleij Cc: Yang Ling Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/13855/ Signed-off-by: Ralf Baechle

MIPS: xilfpga: Use Xilinx Interrupt Controller

2017-01-03T15:34:39Z

IRQs from peripherals such as i2c/uart/ethernet come via the AXI Interrupt controller. Select it in Kconfig for xilfpga and add the DT node Signed-off-by: Zubair Lutfullah Kakakhel Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14592/ Signed-off-by: Ralf Baechle