Hi, I decided to split the membarrier updates from the rseq patchset, and send it separately so each discussion can happen in different threads. This series includes a fix for membarrier private expedited, which should be merged into 4.15-rc and backported to 4.14. The fix has also been sent separately. Testing and documentation of membarrier is improved. A new shared expedited membarrier command is added, allowing use of membarrier expedited over shared memory mappings. The series also introduces a "core serializing" private expedited membarrier for JIT memory reclaim (currently on x86 and arm64). Feedback is welcome! Thanks, Mathieu Mathieu Desnoyers (11): Fix: membarrier: add missing preempt off around smp_call_function_many membarrier: selftest: Test private expedited cmd (v2) powerpc: membarrier: Skip memory barrier in switch_mm() (v7) membarrier: Document scheduler barrier requirements (v5) membarrier: provide SHARED_EXPEDITED command (v2) membarrier: selftest: Test shared expedited cmd membarrier: Provide core serializing command x86: Introduce sync_core_before_usermode (v2) membarrier: x86: Provide core serializing command (v3) membarrier: arm64: Provide core serializing command membarrier: selftest: Test private expedited sync core cmd MAINTAINERS | 1 + arch/arm64/Kconfig | 1 + arch/arm64/kernel/entry.S | 4 + arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/membarrier.h | 27 +++ arch/powerpc/mm/mmu_context.c | 7 + arch/x86/Kconfig | 2 + arch/x86/entry/entry_32.S | 5 + arch/x86/entry/entry_64.S | 4 + arch/x86/include/asm/processor.h | 10 + arch/x86/mm/tlb.c | 6 + include/linux/processor.h | 6 + include/linux/sched/mm.h | 40 +++- include/uapi/linux/membarrier.h | 66 +++++- init/Kconfig | 9 + kernel/sched/core.c | 53 +++-- kernel/sched/membarrier.c | 173 +++++++++++++-- .../testing/selftests/membarrier/membarrier_test.c | 235 +++++++++++++++++++-- 18 files changed, 587 insertions(+), 63 deletions(-) create mode 100644 arch/powerpc/include/asm/membarrier.h -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
