[lkml]   [2009]   [Dec]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    Subject[PATCH v2 00/11] ACPI: early _PDC eval and unify x86/ia64
    Extreme apologies, but I had a mailer hiccup and totally botched
    the first attempt at mailing this series.

    Please disregard that earlier attempt.

    v1 -> v2:
    - no changes to patches; only fixed mail addresses

    It was recently discovered that some BIOS implementations load
    dynamic SSDTs when a processor's _PDC method is evaluated.

    In Linux, we do not evaluate _PDC until after we initialize the EC.

    Unfortunately, that same BIOS references objects in the dynamic
    table during EC enablement. So we get undefined references to
    methods during enablement, and we fail to initialize certain pieces
    of hardware.

    Windows works just fine on this machine, so to me, this is a hint
    that Linux should be evaluating _PDC much earlier.

    The first patch in this series does just that and makes Linux
    more compatible with Windows' ACPI implementation.

    The remaining 10 patches unify the x86/ia64 implementations of
    calling _PDC. I noticed the two archs were way more similar than
    they were different, so I thought it made sense to combine them
    as much as possible.

    This patch series was built on both x86 and ia64 (checkpatch and
    sparse clean).

    It was also boot tested on an HP Envy 15 (x86) and an HP rx6600
    (ia64). It resolved the namespace failures on the Envy 15 and did
    not cause any regressions on the rx6600.

    This does introduce a boot time namespace walk for all the CPUs
    in the system, looking for and evaluating _PDC. Hopefully that
    will not make life miserable for the giant SGI clusters. If worse
    comes to worse, maybe we can quirk them and avoid the namespace


    Alex Chiang (11):
    ACPI: processor: call _PDC early
    ACPI: processor: introduce arch_has_acpi_pdc
    ACPI: processor: unify arch_acpi_processor_init_pdc
    ACPI: processor: factor out common _PDC settings
    ACPI: processor: finish unifying arch_acpi_processor_init_pdc()
    ACPI: processor: unify arch_acpi_processor_cleanup_pdc
    ACPI: processor: introduce acpi_processor_alloc_pdc()
    ACPI: processor: change acpi_processor_eval_pdc interface
    ACPI: processor: open code acpi_processor_cleanup_pdc
    ACPI: processor: change acpi_processor_set_pdc() interface
    ACPI: processor: remove _PDC object list from struct acpi_processor

    arch/ia64/include/asm/acpi.h | 6 +
    arch/ia64/kernel/Makefile | 4 -
    arch/ia64/kernel/acpi-processor.c | 85 -------------------
    arch/x86/include/asm/acpi.h | 26 ++++++
    arch/x86/kernel/acpi/Makefile | 2
    arch/x86/kernel/acpi/processor.c | 101 -----------------------
    drivers/acpi/Makefile | 1
    drivers/acpi/bus.c | 2
    drivers/acpi/internal.h | 1
    drivers/acpi/processor_core.c | 71 ----------------
    drivers/acpi/processor_pdc.c | 165 +++++++++++++++++++++++++++++++++++++
    include/acpi/processor.h | 8 +-
    12 files changed, 206 insertions(+), 266 deletions(-)
    delete mode 100644 arch/ia64/kernel/acpi-processor.c
    delete mode 100644 arch/x86/kernel/acpi/processor.c
    create mode 100644 drivers/acpi/processor_pdc.c

     \ /
      Last update: 2009-12-20 20:33    [W:0.024 / U:34.684 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site