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. http://bugzilla.kernel.org/show_bug.cgi?id=14824 http://bugzilla.kernel.org/show_bug.cgi?id=14710 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 walk. --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
