Date: Tue, 08 Nov 2005 21:07:06 -0800 From: Nate Lawson <nate@root.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: acpi@freebsd.org Subject: Re: acpi_perf Message-ID: <437183FA.80804@root.org> In-Reply-To: <20051108.213804.102936607.imp@bsdimp.com> References: <20051108.213804.102936607.imp@bsdimp.com>
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M. Warner Losh wrote: > A long time ago I disabled acpi_perf because it was causing a double > free panic. I'd forgotten that I'd done this until recently when I > noticed in the /boot/loader.conf file. I renabled it and now I see: > > cpu0: <ACPI CPU> on acpi0 > acpi_perf0: <ACPI CPU Frequency Control> on cpu0 > acpi_perf0: failed in PERF_STATUS attach > device_attach: acpi_perf0 attach returned 6 > acpi_perf0: <ACPI CPU Frequency Control> on cpu0 > acpi_perf0: failed in PERF_STATUS attach > device_attach: acpi_perf0 attach returned 6 > acpi_throttle0: <ACPI CPU Throttling> on cpu0 > acpi_lid0: <Control Method Lid Switch> on acpi0 > > I don't know if this happened before or not, but I was wondering what > people think the next step would be. Dump your ASL and look for what the _PCT method returns under your Processor object. It will reference two registers, the control and status regs. Post that ASL and we'll see why register setup is failing. It could be a collision with someone else who has grabbed the SMI port or it is not an IO or Memory-based register. -- Nate
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