On Mon, Apr 29, 2024 at 02:18:21PM -0500, Bjorn Helgaas wrote: > From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > > Previously we claimed "pcie_aspm=off" meant that ASPM would be disabled, > which is wrong. > > Correct this to say that with "pcie_aspm=off", Linux doesn't touch any ASPM > configuration at all. ASPM may have been enabled by firmware, and that > will be left unchanged. See "aspm_support_enabled". > > Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> Applied with David's Reviewed-by to for-linus for v6.9, thanks, David! > --- > Documentation/admin-guide/kernel-parameters.txt | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index bb884c14b2f6..4bc281d6e8d3 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -4590,9 +4590,10 @@ > norid [S390] ignore the RID field and force use of > one PCI domain per PCI function > > - pcie_aspm= [PCIE] Forcibly enable or disable PCIe Active State Power > + pcie_aspm= [PCIE] Forcibly enable or ignore PCIe Active State Power > Management. > - off Disable ASPM. > + off Don't touch ASPM configuration at all. Leave any > + configuration done by firmware unchanged. > force Enable ASPM even on devices that claim not to support it. > WARNING: Forcing ASPM on may cause system lockups. > > -- > 2.34.1 >
