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2019-04-11s390: remove -fno-strength-reduce flagArnd Bergmann1-1/+1
This was added as a workaround for really old compilers, and it prevents building with clang now. I can see no reason for keeping it, as it has already been removed for most architectures in the pre-git era, so let's remove it everywhere, rather than only for clang. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-11s390: fine-tune stack switch helperMartin Schwidefsky1-9/+9
The CALL_ON_STACK helper currently does not work with clang and for calls without arguments. It does not initialize r2 although the constraint is "+&d". Rework the CALL_FMT_x and the CALL_ON_STACK macros to work with clang and produce optimal code in all cases. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390/mm: silence compiler warning when compiling without CONFIG_PGSTEThomas Huth1-0/+2
If CONFIG_PGSTE is not set (e.g. when compiling without KVM), GCC complains: CC arch/s390/mm/pgtable.o arch/s390/mm/pgtable.c:413:15: warning: ‘pmd_alloc_map’ defined but not used [-Wunused-function] static pmd_t *pmd_alloc_map(struct mm_struct *mm, unsigned long addr) ^~~~~~~~~~~~~ Wrap the function with "#ifdef CONFIG_PGSTE" to silence the warning. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390/protvirt: block kernel command line alterationVasily Gorbik1-1/+1
Disallow kernel command line alteration via ipl parameter block if running in protected virtualization environment. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390/protvirt: add memory sharing for diag 308 set/storeVasily Gorbik2-0/+12
Add sharing of ipl parameter block for diag 308 set/store calls to allow kvm access in protected virtualization environment. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390/uv: introduce guest side ultravisor codeVasily Gorbik6-0/+175
The Ultravisor Call Facility (stfle bit 158) defines an API to the Ultravisor (UV calls), a mini hypervisor located at machine level. With help of the Ultravisor, KVM will be able to run "protected" VMs, special VMs whose memory and management data are unavailable to KVM. The protected VMs can also request services from the Ultravisor. The guest api consists of UV calls to share and unshare memory with the kvm hypervisor. To enable this feature support PROTECTED_VIRTUALIZATION_GUEST kconfig option has been introduced. Co-developed-by: Janosch Frank <frankja@de.ibm.com> Signed-off-by: Janosch Frank <frankja@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390: introduce .boot.preserved.data section compile time validationVasily Gorbik1-2/+2
Same as for .boot.data section make sure that .boot.preserved.data sections of vmlinux and arch/s390/compressed/vmlinux match before producing the compressed kernel image. Symbols presence, order and sizes are cross-checked. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390: move ipl block to .boot.preserved.data sectionVasily Gorbik5-29/+16
.boot.preserved.data is a better fit for ipl block than .boot.data which is discarded after init. Reusing .boot.preserved.data allows to simplify code a little bit and avoid copying data from .boot.data to persistent variables. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-10s390: introduce .boot.preserved.data sectionGerald Schaefer6-0/+31
Introduce .boot.preserve.data section which is similar to .boot.data and "shared" between the decompressor code and the decompressed kernel. The decompressor will store values in it, and copy over to the decompressed image before starting it. This method allows to avoid using pre-defined addresses and other hacks to pass values between those boot phases. Unlike .boot.data section .boot.preserved.data is NOT a part of init data, and hence will be preserved for the kernel life time. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-03-29s390/cpum_cf: Add support for CPU-MF SVN 6Thomas Richter2-38/+84
Add support for the CPU-Measurement Facility counter second version number 6. This number is used to detect some more counters in the crypto counter set and the extended counter set. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-03-29s390/mem_detect: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD)Joe Perches1-1/+1
IS_ENABLED should generally use CONFIG_ prefaced symbols and it doesn't appear as if there is a BLK_DEV_INITRD define. Cc: <stable@vger.kernel.org> # 4.20 Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-03-28Merge tag 's390-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds6-48/+76
Pull s390 fixes from Martin Schwidefsky: "Improvements and bug fixes for 5.1-rc2: - Fix early free of the channel program in vfio - On AP device removal make sure that all messages are flushed with the driver still attached that queued the message - Limit brk randomization to 32MB to reduce the chance that the heap of ld.so is placed after the main stack - Add a rolling average for the steal time of a CPU, this will be needed for KVM to decide when to do busy waiting - Fix a warning in the CPU-MF code - Add a notification handler for AP configuration change to react faster to new AP devices" * tag 's390-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/cpumf: Fix warning from check_processor_id zcrypt: handle AP Info notification from CHSC SEI command vfio: ccw: only free cp on final interrupt s390/vtime: steal time exponential moving average s390/zcrypt: revisit ap device remove procedure s390: limit brk randomization to 32MB
2019-03-28Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds15-38/+36
Pull ARM SoC fixes from Arnd Bergmann: "A couple of minor fixes only for now - fix for incorrect DMA channels on Renesas R-Car - Broadcom bcm2835 error handling fixes - Kconfig dependency fixes for bcm2835 and davinci - CPU idle wakeup fix for i.MX6 - MMC regression on Tegra186 - fix incorrect phy settings on one imx board" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: arm64: tegra: Disable CQE Support for SDMMC4 on Tegra186 ARM: dts: nomadik: Fix polarity of SPI CS ARM: davinci: fix build failure with allnoconfig ARM: imx_v4_v5_defconfig: enable PWM driver ARM: imx_v6_v7_defconfig: continue compiling the pwm driver ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switch ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsi ARM: dts: imx6ull: Use the correct style for SPDX License Identifier ARM: dts: pfla02: increase phy reset duration ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time ARM: imx51: fix a leaked reference by adding missing of_node_put ARM: dts: imx6dl-yapp4: Use rgmii-id phy mode on the cpu port arm64: bcm2835: Add missing dependency on MFD_CORE. ARM: dts: bcm283x: Fix hdmi hpd gpio pull soc: bcm: bcm2835-pm: Fix error paths of initialization. soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain support. arm64: dts: renesas: r8a774c0: Fix SCIF5 DMA channels arm64: dts: renesas: r8a77990: Fix SCIF5 DMA channels
2019-03-28s390/cpumf: Fix warning from check_processor_idThomas Richter1-6/+13
Function __hw_perf_event_init() used a CPU variable without ensuring CPU preemption has been disabled. This caused the following warning in the kernel log: [ 7.277085] BUG: using smp_processor_id() in preemptible [00000000] code: cf-csdiag/1892 [ 7.277111] caller is cf_diag_event_init+0x13a/0x338 [ 7.277122] CPU: 10 PID: 1892 Comm: cf-csdiag Not tainted 5.0.0-20190318.rc0.git0.9e1a11e0f602.300.fc29.s390x+debug #1 [ 7.277131] Hardware name: IBM 2964 NC9 712 (LPAR) [ 7.277139] Call Trace: [ 7.277150] ([<000000000011385a>] show_stack+0x82/0xd0) [ 7.277161] [<0000000000b7a71a>] dump_stack+0x92/0xd0 [ 7.277174] [<00000000007b7e9c>] check_preemption_disabled+0xe4/0x100 [ 7.277183] [<00000000001228aa>] cf_diag_event_init+0x13a/0x338 [ 7.277195] [<00000000002cf3aa>] perf_try_init_event+0x72/0xf0 [ 7.277204] [<00000000002d0bba>] perf_event_alloc+0x6fa/0xce0 [ 7.277214] [<00000000002dc4a8>] __s390x_sys_perf_event_open+0x398/0xd50 [ 7.277224] [<0000000000b9e8f0>] system_call+0xdc/0x2d8 [ 7.277233] 2 locks held by cf-csdiag/1892: [ 7.277241] #0: 00000000976f5510 (&sig->cred_guard_mutex){+.+.}, at: __s390x_sys_perf_event_open+0xd2e/0xd50 [ 7.277257] #1: 00000000363b11bd (&pmus_srcu){....}, at: perf_event_alloc+0x52e/0xce0 The variable is now accessed in proper context. Use get_cpu_var()/put_cpu_var() pair to disable preemption during access. As the hardware authorization settings apply to all CPUs, it does not matter which CPU is used to check the authorization setting. Remove the event->count assignment. It is not needed as function perf_event_alloc() allocates memory for the event with kzalloc() and thus count is already set to zero. Fixes: fe5908bccc56 ("s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace") Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-03-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds5-18/+37
Pull networking fixes from David Miller: "Fixes here and there, a couple new device IDs, as usual: 1) Fix BQL race in dpaa2-eth driver, from Ioana Ciornei. 2) Fix 64-bit division in iwlwifi, from Arnd Bergmann. 3) Fix documentation for some eBPF helpers, from Quentin Monnet. 4) Some UAPI bpf header sync with tools, also from Quentin Monnet. 5) Set descriptor ownership bit at the right time for jumbo frames in stmmac driver, from Aaro Koskinen. 6) Set IFF_UP properly in tun driver, from Eric Dumazet. 7) Fix load/store doubleword instruction generation in powerpc eBPF JIT, from Naveen N. Rao. 8) nla_nest_start() return value checks all over, from Kangjie Lu. 9) Fix asoc_id handling in SCTP after the SCTP_*_ASSOC changes this merge window. From Marcelo Ricardo Leitner and Xin Long. 10) Fix memory corruption with large MTUs in stmmac, from Aaro Koskinen. 11) Do not use ipv4 header for ipv6 flows in TCP and DCCP, from Eric Dumazet. 12) Fix topology subscription cancellation in tipc, from Erik Hugne. 13) Memory leak in genetlink error path, from Yue Haibing. 14) Valid control actions properly in packet scheduler, from Davide Caratti. 15) Even if we get EEXIST, we still need to rehash if a shrink was delayed. From Herbert Xu. 16) Fix interrupt mask handling in interrupt handler of r8169, from Heiner Kallweit. 17) Fix leak in ehea driver, from Wen Yang" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (168 commits) dpaa2-eth: fix race condition with bql frame accounting chelsio: use BUG() instead of BUG_ON(1) net: devlink: skip info_get op call if it is not defined in dumpit net: phy: bcm54xx: Encode link speed and activity into LEDs tipc: change to check tipc_own_id to return in tipc_net_stop net: usb: aqc111: Extend HWID table by QNAP device net: sched: Kconfig: update reference link for PIE net: dsa: qca8k: extend slave-bus implementations net: dsa: qca8k: remove leftover phy accessors dt-bindings: net: dsa: qca8k: support internal mdio-bus dt-bindings: net: dsa: qca8k: fix example net: phy: don't clear BMCR in genphy_soft_reset bpf, libbpf: clarify bump in libbpf version info bpf, libbpf: fix version info and add it to shared object rxrpc: avoid clang -Wuninitialized warning tipc: tipc clang warning net: sched: fix cleanup NULL pointer exception in act_mirr r8169: fix cable re-plugging issue net: ethernet: ti: fix possible object reference leak net: ibm: fix possible object reference leak ...
2019-03-25arm64: tegra: Disable CQE Support for SDMMC4 on Tegra186Jonathan Hunter1-1/+0
Enabling CQE support on Tegra186 Jetson TX2 has introduced a regression that is causing accesses to the file-system on the eMMC to fail. Errors such as the following have been observed ... mmc2: running CQE recovery mmc2: mmc_select_hs400 failed, error -110 print_req_error: I/O error, dev mmcblk2, sector 8 flags 80700 mmc2: cqhci: CQE failed to exit halt state For now disable CQE support for Tegra186 until this issue is resolved. Fixes: dfd3cb6feb73 arm64: tegra: Add CQE Support for SDMMC4 Signed-off-by: Jonathan Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-03-25Merge tag 'imx-fixes-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixesArnd Bergmann8-24/+22
i.MX fixes for 5.1: - Correct phy mode setting of imx6dl-yapp4 board to fix a problem caused by commit 5ecdd77c61c8 ("net: dsa: qca8k: disable delay for RGMII mode"). - Add a missing of_node_put call to fix leaked reference detected by coccinelle in imx51 machine code. - Fix imx6q cpuidle driver bug which causes that CPU might not wake up at expected time. - Increase reset duration of Ethernet phy Micrel KSZ9031RNX to fix transmission timeouts error seen on imx6qdl-phytec-pfla02 board. - Correct SPDX License Identifier style for imx6ull-pinfunc-snvs.h. - Fix 'bus-witdh' typos in imx6qdl-icore-rqs.dtsi. - Correct pseudo PHY address of switch device for imx6dl-yapp4 board. - Update PWM driver options in imx defconfig files due to the change on driver part. * tag 'imx-fixes-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: ARM: imx_v4_v5_defconfig: enable PWM driver ARM: imx_v6_v7_defconfig: continue compiling the pwm driver ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switch ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsi ARM: dts: imx6ull: Use the correct style for SPDX License Identifier ARM: dts: pfla02: increase phy reset duration ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time ARM: imx51: fix a leaked reference by adding missing of_node_put ARM: dts: imx6dl-yapp4: Use rgmii-id phy mode on the cpu port
2019-03-25Merge tag 'arm-soc/for-5.1/soc-fixes' of https://github.com/Broadcom/stblinux into arm/fixesArnd Bergmann1-0/+1
This pull request contains Broadcom ARM/ARM64-based SoCs fixes for 5.1, please pull the following: - Eric provides fixes for the bcm2835-pm driver: added missing depends on MFD_CORE for the ARM64 definition of ARCH_BCM2835, fixing error paths on initialization and fixing the PM_IMAGE_PERI power domain * tag 'arm-soc/for-5.1/soc-fixes' of https://github.com/Broadcom/stblinux: arm64: bcm2835: Add missing dependency on MFD_CORE. soc: bcm: bcm2835-pm: Fix error paths of initialization. soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain support.
2019-03-25Merge tag 'arm-soc/for-5.1/devicetree-fixes' of https://github.com/Broadcom/stblinux into arm/fixesArnd Bergmann1-1/+1
This pull request contains Broadcom ARM-based SoCs Device Tree fixes for 5.1, please pull the following: - Helen fixes the HDMI hot-pug detect GPIO polarity for the Rasperry Pi model B revision 2 * tag 'arm-soc/for-5.1/devicetree-fixes' of https://github.com/Broadcom/stblinux: ARM: dts: bcm283x: Fix hdmi hpd gpio pull
2019-03-25ARM: dts: nomadik: Fix polarity of SPI CSLinus Walleij1-4/+5
The SPI DT bindings are for historical reasons a pitfall, the ability to flag a GPIO line as active high/low with the second cell flags was introduced later so the SPI subsystem will only accept the bool flag spi-cs-high to indicate that the line is active high. It worked by mistake, but the mistake was corrected in another commit. The comment in the DTS file was also misleading: this CS is indeed active high. Fixes: cffbb02dafa3 ("ARM: dts: nomadik: Augment NHK15 panel setting") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-03-25Merge tag 'renesas-fixes-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into arm/fixesArnd Bergmann2-8/+6
Renesas ARM Based SoC Fixes for v5.1 R-Car Gen3 E3 (r8a77990) and RZ/G2E (r8a774c0) SoCs: * Correct SCIF5 DMA channels * tag 'renesas-fixes-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: arm64: dts: renesas: r8a774c0: Fix SCIF5 DMA channels arm64: dts: renesas: r8a77990: Fix SCIF5 DMA channels
2019-03-25ARM: davinci: fix build failure with allnoconfigSekhar Nori1-0/+1
allnoconfig build with just ARCH_DAVINCI enabled fails because drivers/clk/davinci/* depends on REGMAP being enabled. Fix it by selecting REGMAP_MMIO when building in DaVinci support. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-03-24Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds12-58/+52
Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes: - Prevent potential NULL pointer dereferences in the HPET and HyperV code - Exclude the GART aperture from /proc/kcore to prevent kernel crashes on access - Use the correct macros for Cyrix I/O on Geode processors - Remove yet another kernel address printk leak - Announce microcode reload completion as requested by quite some people. Microcode loading has become popular recently. - Some 'Make Clang' happy fixlets - A few cleanups for recently added code" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/gart: Exclude GART aperture from kcore x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error x86/mm/pti: Make local symbols static x86/cpu/cyrix: Remove {get,set}Cx86_old macros used for Cyrix processors x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors x86/microcode: Announce reload operation's completion x86/hyperv: Prevent potential NULL pointer dereference x86/hpet: Prevent potential NULL pointer dereference x86/lib: Fix indentation issue, remove extra tab x86/boot: Restrict header scope to make Clang happy x86/mm: Don't leak kernel addresses x86/cpufeature: Fix various quality problems in the <asm/cpu_device_hd.h> header
2019-03-24Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-1/+1
Pull irq fixes from Thomas Gleixner: "A set of fixes for the interrupt subsystem: - Remove secondary GIC support on systems w/o device-tree support - A set of small fixlets in various irqchip drivers - static and fall-through annotations - Kernel doc and typo fixes" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Mark expected switch case fall-through genirq/devres: Remove excess parameter from kernel doc irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static irqchip/mbigen: Don't clear eventid when freeing an MSI irqchip/stm32: Don't set rising configuration registers at init irqchip/stm32: Don't clear rising/falling config registers at init dt-bindings: irqchip: renesas-irqc: Document r8a774c0 support irqchip/mmp: Make mmp_irq_domain_ops static irqchip/brcmstb-l2: Make two init functions static genirq: Fix typo in comment of IRQD_MOVE_PCNTXT irqchip/gic-v3-its: Fix comparison logic in lpi_range_cmp irqchip/gic: Drop support for secondary GIC in non-DT systems irqchip/imx-irqsteer: Fix of_property_read_u32() error handling
2019-03-23x86/gart: Exclude GART aperture from kcoreKairui Song1-7/+13
On machines where the GART aperture is mapped over physical RAM, /proc/kcore contains the GART aperture range. Accessing the GART range via /proc/kcore results in a kernel crash. vmcore used to have the same issue, until it was fixed with commit 2a3e83c6f96c ("x86/gart: Exclude GART aperture from vmcore")', leveraging existing hook infrastructure in vmcore to let /proc/vmcore return zeroes when attempting to read the aperture region, and so it won't read from the actual memory. Apply the same workaround for kcore. First implement the same hook infrastructure for kcore, then reuse the hook functions introduced in the previous vmcore fix. Just with some minor adjustment, rename some functions for more general usage, and simplify the hook infrastructure a bit as there is no module usage yet. Suggested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Kairui Song <kasong@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jiri Bohac <jbohac@suse.cz> Acked-by: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Omar Sandoval <osandov@fb.com> Cc: Dave Young <dyoung@redhat.com> Link: https://lkml.kernel.org/r/20190308030508.13548-1-kasong@redhat.com
2019-03-22Merge tag 'powerpc-5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds7-29/+25
Pull powerpc fixes from Michael Ellerman: "One fix for a boot failure on 32-bit, introduced during the merge window. A fix for our handling of CLOCK_MONOTONIC in the 64-bit VDSO. Changing the wall clock across the Y2038 boundary could cause CLOCK_MONOTONIC to jump forward and backward. Our spectre_v2 reporting was a bit confusing due to a bug I introduced. On some systems it was reporting that the count cache was disabled and also that we were flushing the count cache on context switch. Only the former is true, and given that the count cache is disabled it doesn't make any sense to flush it. No one reported it, so presumably the presence of any mitigation is all people check for. Finally a small build fix for zsmalloc on 32-bit. Thanks to: Ben Hutchings, Christophe Leroy, Diana Craciun, Guenter Roeck, Michael Neuling" * tag 'powerpc-5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/security: Fix spectre_v2 reporting powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations powerpc/6xx: fix setup and use of SPRN_SPRG_PGDIR for hash32 powerpc/vdso64: Fix CLOCK_MONOTONIC inconsistencies across Y2038
2019-03-22Merge branch 'x86/cpu' into x86/urgentThomas Gleixner1-16/+15
Merge the forgotten cleanup patch for the new file, so the mess does not propagate further.
2019-03-22x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an errorNathan Chancellor1-0/+1
When building with -Wsometimes-uninitialized, Clang warns: arch/x86/kernel/hw_breakpoint.c:355:2: warning: variable 'align' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] The default cannot be reached because arch_build_bp_info() initializes hw->len to one of the specified cases. Nevertheless the warning is valid and returning -EINVAL makes sure that this cannot be broken by future modifications. Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: clang-built-linux@googlegroups.com Link: https://github.com/ClangBuiltLinux/linux/issues/392 Link: https://lkml.kernel.org/r/20190307212756.4648-1-natechancellor@gmail.com
2019-03-22x86/mm/pti: Make local symbols staticValdis Kletnieks1-2/+2
With 'make C=2 W=1', sparse and gcc both complain: CHECK arch/x86/mm/pti.c arch/x86/mm/pti.c:84:3: warning: symbol 'pti_mode' was not declared. Should it be static? arch/x86/mm/pti.c:605:6: warning: symbol 'pti_set_kernel_image_nonglobal' was not declared. Should it be static? CC arch/x86/mm/pti.o arch/x86/mm/pti.c:605:6: warning: no previous prototype for 'pti_set_kernel_image_nonglobal' [-Wmissing-prototypes] 605 | void pti_set_kernel_image_nonglobal(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pti_set_kernel_image_nonglobal() is only used locally. 'pti_mode' exists in drivers/hwtracing/intel_th/pti.c as well, but it's a completely unrelated local (static) symbol. Make both static. Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/27680.1552376873@turing-police
2019-03-22ARM: imx_v4_v5_defconfig: enable PWM driverUwe Kleine-König1-0/+3
While there is no mainline board that makes use of the PWM still enable the driver for it to increase compile test coverage. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-22ARM: imx_v6_v7_defconfig: continue compiling the pwm driverUwe Kleine-König1-1/+1
After the pwm-imx driver was split into two drivers and the Kconfig symbol changed accordingly, use the new name to continue being able to use the PWM hardware. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-22ARM: dts: imx6dl-yapp4: Use correct pseudo PHY address for the switchMichal Vokáč1-2/+2
The switch is accessible through pseudo PHY which is located at 0x10. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Fixes: 87489ec3a77f ("ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-22ARM: dts: imx6qdl: Fix typo in imx6qdl-icore-rqs.dtsiMasanari Iida1-2/+2
This patch fixes a spelling typo. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Fixes: cc42603de320 ("ARM: dts: imx6q-icore-rqs: Add Engicam IMX6 Q7 initial support") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-21Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds5-27/+38
Pull arm64 fixes from Catalin Marinas: "Mostly fixes apart from the kprobe blacklist checking which was deferred because of conflicting with a fix merged after I pinned the arm64 for-next/core branch (f2b3d8566d81 "arm64: kprobe: Always blacklist the KVM world-switch code"). Summary: - Update the kprobe blacklist checking for arm64. This was supposed to be queued during the merging window but, due to conflicts, it was deferred post -rc1 - Extend the Fujitsu erratum 010001 workaround to A64FX v1r0 - Whitelist HiSilicon Taishan v110 CPUs as not susceptible to Meltdown - Export save_stack_trace_regs() - Remove obsolete selection of MULTI_IRQ_HANDLER" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: remove obsolete selection of MULTI_IRQ_HANDLER arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs arm64: Add MIDR encoding for HiSilicon Taishan CPUs arm64/stacktrace: Export save_stack_trace_regs() arm64: apply workaround on A64FX v1r0 arm64: kprobes: Use arch_populate_kprobe_blacklist() arm64: kprobes: Move exception_text check in blacklist arm64: kprobes: Remove unneeded RODATA check arm64: kprobes: Move extable address check into arch_prepare_kprobe()
2019-03-21Merge tag 'irqchip-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgentThomas Gleixner1-1/+1
Pull irqchip updates for 5.1 from Marc Zyngier: - irqsteer error handling fix - GICv3 range coalescing fix - stm32 coprocessor coexistence fixes - mbigen MSI teardown fix - non-DT secondary GIC infrastructure removed - various cleanups (brcmstb-l2, mmp) - new DT bindings (r8a774c0)
2019-03-21x86/cpu/cyrix: Remove {get,set}Cx86_old macros used for Cyrix processorsMatthew Whitehead1-21/+0
The getCx86_old() and setCx86_old() macros have been replaced with correctly working getCx86() and setCx86(), so remove these unused macros. Signed-off-by: Matthew Whitehead <tedheadster@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: luto@kernel.org Link: https://lkml.kernel.org/r/1552596361-8967-3-git-send-email-tedheadster@gmail.com
2019-03-21x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processorsMatthew Whitehead1-7/+7
There are comments in processor-cyrix.h advising you to _not_ make calls using the deprecated macros in this style: setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x80); This is because it expands the macro into a non-functioning calling sequence. The calling order must be: outb(CX86_CCR2, 0x22); inb(0x23); From the comments: * When using the old macros a line like * setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88); * gets expanded to: * do { * outb((CX86_CCR2), 0x22); * outb((({ * outb((CX86_CCR2), 0x22); * inb(0x23); * }) | 0x88), 0x23); * } while (0); The new macros fix this problem, so use them instead. Tested on an actual Geode processor. Signed-off-by: Matthew Whitehead <tedheadster@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: luto@kernel.org Link: https://lkml.kernel.org/r/1552596361-8967-2-git-send-email-tedheadster@gmail.com
2019-03-21x86/microcode: Announce reload operation's completionBorislav Petkov1-0/+2
By popular demand, issue a single line to dmesg after the reload operation completes to let the user know that a reload has at least been attempted. Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190313110022.8229-1-bp@alien8.de
2019-03-21x86/hyperv: Prevent potential NULL pointer dereferenceKangjie Lu1-1/+5
The page allocation in hv_cpu_init() can fail, but the code does not have a check for that. Add a check and return -ENOMEM when the allocation fails. [ tglx: Massaged changelog ] Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Acked-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: pakki001@umn.edu Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Sasha Levin <sashal@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: linux-hyperv@vger.kernel.org Link: https://lkml.kernel.org/r/20190314054651.1315-1-kjlu@umn.edu
2019-03-21x86/hpet: Prevent potential NULL pointer dereferenceAditya Pakki1-0/+2
hpet_virt_address may be NULL when ioremap_nocache fail, but the code lacks a check. Add a check to prevent NULL pointer dereference. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: kjlu@umn.edu Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Joe Perches <joe@perches.com> Cc: Nicolai Stange <nstange@suse.de> Cc: Roland Dreier <roland@purestorage.com> Link: https://lkml.kernel.org/r/20190319021958.17275-1-pakki001@umn.edu
2019-03-21x86/lib: Fix indentation issue, remove extra tabColin Ian King1-1/+1
The increment of buff is indented one level too deeply, clean this up by removing a tab. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Borislav Petkov <bp@alien8.de> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: kernel-janitors@vger.kernel.org Link: https://lkml.kernel.org/r/20190314230838.18256-1-colin.king@canonical.com
2019-03-21x86/boot: Restrict header scope to make Clang happyNick Desaulniers1-1/+2
The inclusion of <linux/kernel.h> was causing issue as the definition of __arch_hweight64 from arch/x86/include/asm/arch_hweight.h eventually gets included. The definition is problematic when compiled with -m16 (all code in arch/x86/boot/ is) as the "D" inline assembly constraint is rejected by both compilers when passed an argument of type long long (regardless of signedness, anything smaller is fine). Because GCC performs inlining before semantic analysis, and __arch_hweight64 is dead in this translation unit, GCC does not report any issues at compile time. Clang does the semantic analysis in the front end, before inlining (run in the middle) can determine the code is dead. I consider this another case of PR33587, which I think we can do more work to solve. It turns out that arch/x86/boot/string.c doesn't actually need linux/kernel.h, simply linux/limits.h and linux/compiler.h. Suggested-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Cc: bp@alien8.de Cc: niravd@google.com Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Chao Fan <fanc.fnst@cn.fujitsu.com> Cc: Uros Bizjak <ubizjak@gmail.com> Link: https://bugs.llvm.org/show_bug.cgi?id=33587 Link: https://github.com/ClangBuiltLinux/linux/issues/347 Link: https://lkml.kernel.org/r/20190314221458.83047-1-ndesaulniers@google.com
2019-03-21powerpc/security: Fix spectre_v2 reportingMichael Ellerman1-15/+8
When I updated the spectre_v2 reporting to handle software count cache flush I got the logic wrong when there's no software count cache enabled at all. The result is that on systems with the software count cache flush disabled we print: Mitigation: Indirect branch cache disabled, Software count cache flush Which correctly indicates that the count cache is disabled, but incorrectly says the software count cache flush is enabled. The root of the problem is that we are trying to handle all combinations of options. But we know now that we only expect to see the software count cache flush enabled if the other options are false. So split the two cases, which simplifies the logic and fixes the bug. We were also missing a space before "(hardware accelerated)". The result is we see one of: Mitigation: Indirect branch serialisation (kernel only) Mitigation: Indirect branch cache disabled Mitigation: Software count cache flush Mitigation: Software count cache flush (hardware accelerated) Fixes: ee13cb249fab ("powerpc/64s: Add support for software count cache flush") Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Diana Craciun <diana.craciun@nxp.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-21ARM: dts: imx6ull: Use the correct style for SPDX License IdentifierNishad Kamdar1-1/+1
This patch corrects the SPDX License Identifier style in imx6ull-pinfunc-snvs.h. Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 and making some manual changes. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-20Merge tag 'arc-5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arcLinus Torvalds27-314/+399
Pull ARC updates from Vineet Gupta: - unaligned access support for HS cores - Removed extra memory barrier around spinlock code - HSDK platform updates: enable dmac, reset - some more boot logging updates - misc minor fixes * tag 'arc-5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: arch: arc: Kconfig: pedantic formatting ARCv2: spinlock: remove the extra smp_mb before lock, after unlock ARC: unaligned: relax the check for gcc supporting -mno-unaligned-access ARC: boot log: cut down on verbosity ARCv2: boot log: refurbish HS core/release identification arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM ARC: u-boot args: check that magic number is correct ARC: perf: bpok condition only exists for ARCompact ARCv2: Add explcit unaligned access support (and ability to disable too) ARCv2: lib: introduce memcpy optimized for unaligned access ARC: [plat-hsdk]: Enable AXI DW DMAC support ARC: [plat-hsdk]: Add reset controller handle to manage USB reset ARC: DTB: [scripted] fix node name and address spelling
2019-03-20arm64: remove obsolete selection of MULTI_IRQ_HANDLERMatthias Kaehlcke1-1/+0
The arm64 config selects MULTI_IRQ_HANDLER, which was renamed to GENERIC_IRQ_MULTI_HANDLER by commit 4c301f9b6a94 ("ARM: Convert to GENERIC_IRQ_MULTI_HANDLER"). The 'new' option is already selected, so just remove the obsolete entry. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-03-21powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurationsBen Hutchings1-1/+1
MAX_PHYSMEM_BITS only needs to be defined if CONFIG_SPARSEMEM is enabled, and that was the case before commit 4ffe713b7587 ("powerpc/mm: Increase the max addressable memory to 2PB"). On 32-bit systems, where CONFIG_SPARSEMEM is not enabled, we now define it as 46. That is larger than the real number of physical address bits, and breaks calculations in zsmalloc: mm/zsmalloc.c:130:49: warning: right shift count is negative MAX(32, (ZS_MAX_PAGES_PER_ZSPAGE << PAGE_SHIFT >> OBJ_INDEX_BITS)) ^~ ... mm/zsmalloc.c:253:21: error: variably modified 'size_class' at file scope struct size_class *size_class[ZS_SIZE_CLASSES]; ^~~~~~~~~~ Fixes: 4ffe713b7587 ("powerpc/mm: Increase the max addressable memory to 2PB") Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-20ARM: dts: pfla02: increase phy reset durationMarco Felsch1-0/+1
Increase the reset duration to ensure correct phy functionality. The reset duration is taken from barebox commit 52fdd510de ("ARM: dts: pfla02: use long enough reset for ethernet phy"): Use a longer reset time for ethernet phy Micrel KSZ9031RNX. Otherwise a small percentage of modules have 'transmission timeouts' errors like barebox@Phytec phyFLEX-i.MX6 Quad Carrier-Board:/ ifup eth0 warning: No MAC address set. Using random address 7e:94:4d:02:f8:f3 eth0: 1000Mbps full duplex link detected eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout T eth0: transmission timeout Cc: Stefan Christ <s.christ@phytec.de> Cc: Christian Hemp <c.hemp@phytec.de> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Fixes: 3180f956668e ("ARM: dts: Phytec imx6q pfla02 and pbab01 support") Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2019-03-19Merge tag 'tags/bcm2835-dt-next-2019-03-04' into devicetree/fixesFlorian Fainelli1-1/+1
This pull request brings in a fix for detecting HDMI on the Pi B rev 2. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2019-03-19Merge tag 'mips_fixes_5.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds5-17/+13
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.
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