linaro-kernel January 2018

linaro-kernel@lists.linaro.org

7 participants
94 discussions

[PATCH V3 00/16] PM / OPP: Introduce APIs to transition OPPs

by Viresh Kumar

Hi Guys, This patchset add APIs in OPP layer to allow OPPs transitioning from within OPP layer. Currently all OPP users need to replicate the same code to switch between OPPs. While the same can be handled easily by OPP-core. The first 7 patches update the OPP core to introduce the new APIs and the next Nine patches update cpufreq-dt for the same. 11 out of 17 are already Reviewed by Stephen, only few are left :) I hope this is the last version of the series :) Testing: - Tested on exynos 5250-arndale (dual-cortex-A15) - Tested for both Old-V1 bindings and New V2 bindings - Tested with regulator names as: 'cpu-supply' and 'cpu0-supply' - Tested with Unsupported supply ranges as well, to check the opp-disable logic V2->V3: - Very minor updates. - find_supply_name() doesn't return an error value now, and so its callers don't check for it. - And so we don't need to initialize name to NULL Viresh Kumar (16): PM / OPP: get/put regulators from OPP core PM / OPP: Disable OPPs that aren't supported by the regulator PM / OPP: Introduce dev_pm_opp_get_max_volt_latency() PM / OPP: Introduce dev_pm_opp_get_max_transition_latency() PM / OPP: Parse clock-latency and voltage-tolerance for v1 bindings PM / OPP: Manage device clk PM / OPP: Add dev_pm_opp_set_rate() cpufreq: dt: Convert few pr_debug/err() calls to dev_dbg/err() cpufreq: dt: Rename 'need_update' to 'opp_v1' cpufreq: dt: OPP layers handles clock-latency for V1 bindings as well cpufreq: dt: Pass regulator name to the OPP core cpufreq: dt: Unsupported OPPs are already disabled cpufreq: dt: Reuse dev_pm_opp_get_max_transition_latency() cpufreq: dt: Use dev_pm_opp_set_rate() to switch frequency cpufreq: dt: No need to fetch voltage-tolerance cpufreq: dt: No need to allocate resources anymore drivers/base/power/opp/core.c | 420 ++++++++++++++++++++++++++++++++++++++++++ drivers/base/power/opp/opp.h | 13 ++ drivers/cpufreq/cpufreq-dt.c | 300 +++++++++++------------------- include/linux/pm_opp.h | 27 +++ 4 files changed, 565 insertions(+), 195 deletions(-) -- 2.7.1.370.gb2aa7f8

6 years, 5 months

KPTI backport review to LTS 4.9

by Alex Shi

Hi All, I pushed a draft version of backport to git://git.linaro.org/kernel/linux-linaro-stable.git lts-v4.9-kpti The backport based on arm tree: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=kpti The following commit aren't included for couple reasons: a, bpf patch included in LTS; b falkor isn't supported in LTS c, PAN isn't supported on LTS; bpf: prevent out-of-bounds speculation arm64: Implement branch predictor hardening for Falkor arm64: kpti: Fix the interaction between ASID switching and software PAN arm64: mm: Introduce TTBR_ASID_MASK for getting at the ASID in the TTBR perf: arm_spe: Fail device probe when arm64_kernel_unmapped_at_el0() arm64: erratum: Work around Falkor erratum #E1003 in trampoline code arm64: mm: Fix and re-enable ARM64_SW_TTBR0_PAN arm64: mm: Rename post_ttbr0_update_workaround arm64: mm: Remove pre_ttbr0_update_workaround for Falkor erratum #E1003 arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN The kernelci testing show it can boot on 82 boards but failed on 12 boards on latest commit c9966001e6cac2e7c9f8 https://kernelci.org/boot/all/job/lsk/branch/linux-linaro-lsk-v4.9-test/ker… Debug show the failure is due to __bp_harden_hyp_vecs_start isn't mapped during booting. So guess I missed some commits from arch/arm/kvm/arm.c to virt/kvm/arm/arm.c when doing pick up: d00aff63b0b arm64: KVM: Use per-CPU vector when BP hardening is enabled Any hints are appreciated! kvm_arch_init -> init_hyp_mode(conditionally) ->kvm_map_vectors -> create_hyp_mappings(__bp_harden_hyp_vecs_start) Regards Alex CPU features: detected feature: 32-bit EL0 Support [ 0.092699] CPU features: detected feature: Kernel page table isolation (KPTI) [ 0.100912] Unable to handle kernel paging request at virtual address ffff800000095000 [ 0.101805] pgd = ffff000008e81000 [ 0.102224] [ffff800000095000] *pgd=000000005eff8003, *pud=000000005eff7003, *pmd=000000005eff6003, *pte=00e0000040095f93 [ 0.104045] Internal error: Oops: 9600004f [#1] PREEMPT SMP [ 0.104710] Modules linked in: [ 0.105400] CPU: 0 PID: 10 Comm: migration/0 Not tainted 4.9.78-00038-gc996600-dirty #67 [ 0.105993] Hardware name: linux,dummy-virt (DT) [ 0.106548] task: ffff80001d86f080 task.stack: ffff80001d8a8000 [ 0.108086] PC is at __memcpy+0xc0/0x180 [ 0.108422] LR is at enable_psci_bp_hardening+0x190/0x218 [ 0.108830] pc : [<ffff0000083786c0>] lr : [<ffff00000808ca98>] pstate: 800000c5 [ 0.109294] sp : ffff80001d8abcd0 [PATCH 01/38] arm64: mm: Use non-global mappings for kernel space [PATCH 02/38] arm64: mm: Move ASID from TTBR0 to TTBR1 [PATCH 03/38] arm64: mm: Allocate ASIDs in pairs [PATCH 04/38] arm64: mm: Add arm64_kernel_unmapped_at_el0 helper [PATCH 05/38] arm64: mm: Invalidate both kernel and user ASIDs when [PATCH 06/38] arm64: factor out entry stack manipulation [PATCH 07/38] arm64: entry.S: move SError handling into a C function [PATCH 08/38] module: extend 'rodata=off' boot cmdline parameter to [PATCH 09/38] arm64: entry: Add exception trampoline page for [PATCH 10/38] arm64: mm: Map entry trampoline into trampoline and [PATCH 11/38] arm64: entry: Explicitly pass exception level to [PATCH 12/38] arm64: entry: Hook up entry trampoline to exception [PATCH 13/38] arm64: tls: Avoid unconditional zeroing of tpidrro_el0 [PATCH 14/38] arm64: entry: Add fake CPU feature for unmapping the [PATCH 15/38] arm64: Kconfig: Add CONFIG_UNMAP_KERNEL_AT_EL0 [PATCH 16/38] arm64: kaslr: Put kernel vectors address in separate [PATCH 17/38] arm64: cpufeature: Pass capability structure to [PATCH 18/38] arm64: Allow checking of a CPU-local erratum [PATCH 19/38] arm64: capabilities: Handle duplicate entries for a [PATCH 20/38] arm64: use RET instruction for exiting the trampoline [PATCH 21/38] arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig [PATCH 22/38] arm64: Take into account ID_AA64PFR0_EL1.CSV3 [PATCH 23/38] drivers/firmware: Expose psci_get_version through [PATCH 24/38] mm: Introduce lm_alias [PATCH 25/38] arm64: Move post_ttbr_update_workaround to C code [PATCH 26/38] arm64: Add skeleton to harden the branch predictor [PATCH 27/38] arm64: KVM: Use per-CPU vector when BP hardening is [PATCH 28/38] arm64: KVM: Make PSCI_VERSION a fast path [PATCH 29/38] arm64: cpu_errata: Allow an erratum to be match for all [PATCH 30/38] arm64: cputype: Add missing MIDR values for Cortex-A72 [PATCH 31/38] arm64: Implement branch predictor hardening for [PATCH 32/38] arm64: cputype: Add MIDR values for Cavium ThunderX2 [PATCH 33/38] arm: Add BTB invalidation on switch_mm for Cortex-A9, [PATCH 34/38] arm: KVM: Invalidate BTB on guest exit [PATCH 35/38] arm: Add icache invalidation on switch_mm for [PATCH 36/38] arm: KVM: Invalidate icache on guest exit for [PATCH 37/38] arm: Invalidate BTB on prefetch abort outside of user [PATCH 38/38] arm: Invalidate icache on prefetch abort outside of

6 years, 10 months

v4.14.16 build: 0 failures 0 warnings (v4.14.16)

by Build bot for Mark Brown

Tree/Branch: v4.14.16 Git describe: v4.14.16 Commit: 6c70076667 Linux 4.14.16 Build Time: 109 min 4 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

v3.18.93 build: 0 failures 1 warnings (v3.18.93)

by Build bot for Mark Brown

Tree/Branch: v3.18.93 Git describe: v3.18.93 Commit: 90aaf2f256 Linux 3.18.93 Build Time: 50 min 21 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 1 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): 2 warnings 0 mismatches : x86_64-defconfig ------------------------------------------------------------------------------- Warnings Summary: 1 2 ../include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- x86_64-defconfig : PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: ../include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] ../include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

v4.9.79 build: 0 failures 0 warnings (v4.9.79)

by Build bot for Mark Brown

Tree/Branch: v4.9.79 Git describe: v4.9.79 Commit: 6c6f924f9c Linux 4.9.79 Build Time: 92 min 38 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

v4.4.114 build: 0 failures 0 warnings (v4.4.114)

by Build bot for Mark Brown

Tree/Branch: v4.4.114 Git describe: v4.4.114 Commit: 49fe90b853 Linux 4.4.114 Build Time: 67 min 16 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

master build: 0 failures 0 warnings (v4.15-2341-g3da90b159b14)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.15-2341-g3da90b159b14 Commit: 3da90b159b Merge tag 'f2fs-for-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Build Time: 113 min 19 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

master build: 0 failures 0 warnings (v4.15-2138-g13ddd1667e7f)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.15-2138-g13ddd1667e7f Commit: 13ddd1667e Merge branch 'for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Build Time: 112 min 56 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

master build: 0 failures 0 warnings (v4.15-1950-g72906f38934a)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.15-1950-g72906f38934a Commit: 72906f3893 Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 112 min 31 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

master build: 0 failures 0 warnings (v4.15-1549-g6304672b7f0a)

by Build bot for Mark Brown

Tree/Branch: master Git describe: v4.15-1549-g6304672b7f0a Commit: 6304672b7f Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Build Time: 112 min 35 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

6 years, 10 months

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linaro-kernel January 2018