Re: [Qemu-devel] [PATCH v2] x86: gigabyte alignment for ram

[Gerd Hoffmann]

> > > My laptop has it reserved in a \_SB\PCI0\LPC\SIO device instead:
> > > 
> > >             Device (LPC)
> > >             {
> > >                 Name (_ADR, 0x001F0000)  // _ADR: Address
> > >                 Name (_S3D, 0x03)  // _S3D: S3 Device State
> > >                 Name (RID, 0x00)
> > >                 Device (SIO)
> > >                 {
> > >                     Name (_HID, EisaId ("PNP0C0P2"))
> > >                     Name (_UID, 0x00)  // _UID: Unique ID
> > >                     Name (SCRS, ResourceTemplate ()
> > >                     {
> > >                         [ ... ]
> > >                         Memory32Fixed (ReadWrite,
> > >                             0xF8000000,         // Address Base
> > >                             0x04000000,         // Address Length
> > >                             )
> > >                         [ ... ]
> > > 
> > > cheers,
> > >   Gerd
> > > 
> > 
> > We can try, but Igor tried to do something like this recently (
> > for IO resources) and windows guests kept crashing
> > unless he made holes in _CRS.
> I've tried to consume ranges under piix_pm/lpc device,
> there were no any indication that ranges were ever consumed.

I see this in dmesg:

[    0.128636] PCI: MMCONFIG at [mem 0xf8000000-0xfbffffff] reserved in
ACPI motherboard resources

cheers,
  Gerd