ACPI C-states not working properly
dillon at apollo.backplane.com
Fri Nov 13 18:30:07 PST 2009
:after the recent ACPI update, setting hw.acpi.cpu.cx_lowest=C3 caused
:clock interrupt issues on my ThinkPad X60.
:This is because the special handling that sets the clock interrupt
:source to i8254 when C3 is enabled was no longer working. The type
:field of struct acpi_cx in acpi_cpu_cstate.c was overwritten due to a
:typo. The patch below fixes the issue.
:- acpi_PkgGas(sc->cpu_dev, pkg, 0, &cx_ptr->type, &cx_ptr->rid, &cx_ptr->p_lvlx,
:+ acpi_PkgGas(sc->cpu_dev, pkg, 0, &cx_ptr->res_type, &cx_ptr->rid, &cx_ptr->p_lvlx,
Nice catch. Committed!
<dillon at backplane.com>
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