https://bugzilla.kernel.org/show_bug.cgi?id=85401
--- Comment #4 from [email protected] --- The 3.17 04-Oct-2014 mainline kernel is even worse, it disabled all PCIe ASPM on all devices whether or not any kernel pcie_aspm parameter is set: # cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.17.0-999-generic root=/dev/sda1 ro biosdevname=0 intel_pstate=enable ipv6.disable=1 debug ignore_loglevel panic=10 pcie_aspm.policy=powersave pcie_aspm=force oops=panic # lspci -vvvv | grep ASPM LnkCap: Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <256ns, L1 <8us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- LnkCap: Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <512ns, L1 <64us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ # dmesg | grep -e _OSC -e PCIe -e ASPM [ 0.000000] PCIe ASPM is forcibly enabled [ 0.090565] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it [ 0.121461] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI] [ 0.121623] acpi PNP0A08:00: _OSC: platform does not support [PCIeHotplug PME] [ 0.121726] acpi PNP0A08:00: _OSC: OS now controls [AER PCIeCapability] [ 0.138681] acpi PNP0A08:00: Disabling ASPM (FADT indicates it is unsupported) When removing the pcie_aspm boot parameters: # cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.17.0-999-generic root=/dev/sda1 ro biosdevname=0 intel_pstate=enable ipv6.disable=1 debug ignore_loglevel panic=10 oops=panic # lspci -vvvv | grep ASPM LnkCap: Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <256ns, L1 <8us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- LnkCap: Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <512ns, L1 <64us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ -- You are receiving this mail because: You are watching the assignee of the bug. ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
