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

From: Christoph Hellwig
Date: Tue Aug 25 2020 - 02:23:47 EST


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?