Re: [PATCH] PCI/ASPM: Enable ASPM for links under VMD domain

[Derrick, Jonathan]

On Tue, 2020-08-25 at 06:23 +0000, Christoph Hellwig wrote:
> On Fri, Aug 21, 2020 at 08:32:20PM +0800, Kai-Heng Feng wrote:
> > New Intel laptops with VMD cannot reach deeper power saving state,
> > renders very short battery time.
> 
> So what about just disabling VMD given how bloody pointless it is?
> Hasn't anyone learned from the AHCI remapping debacle?
> 
> I'm really pissed at all this pointless crap intel comes up with just
> to make life hard for absolutely no gain.  Is it so hard to just leave
> a NVMe device as a standard NVMe device instead of f*^&ing everything
> up in the chipset to make OS support a pain and I/O slower than by
> doing nothing?


Feel free to review my set to disable the MSI remapping which will make
it perform as well as direct-attached:

https://patchwork.kernel.org/project/linux-pci/list/?series=325681