On Wed, 31 Jul 2013 08:59:59 +0300 "Michael S. Tsirkin" <m...@redhat.com> wrote:
> On Tue, Jul 30, 2013 at 09:00:38AM +0200, Igor Mammedov wrote: > > Windows XP (32 and 64 bit) crashes if 64-bit PCI hole is present. > > Use _OSI ACPI method to blacklist it and hide 64-bit PCI hole. > > > > _OSI strings reported by XP are taken from here: > > http://msdn.microsoft.com/library/windows/hardware/gg463275 > > > > Signed-off-by: Igor Mammedov <imamm...@redhat.com> > > So to expand on what I said, just reading this document: > > " Windows operating systems return 0xFFFFFFFF if the argument to the > _OSI method specifies an earlier version of Windows. For example, > Windows 7 returns 0xFFFFFFFF for both “Windows 2009” (Windows 7) and > “Windows 2006” (Windows Vista®)." > > This would imply that all moder windows versions return 0xFFFFFFFF > in response to querying Windows 2001. > > To see what a modern Linux supports, see > drivers/acpi/acpica/utosi.c > > Looks like the result of this patch is to always disable > the 64 bit window? Yep, patch is not valid. > > > --- > > src/acpi-dsdt.dsl | 25 +++++++++++++++++++++++++ > > 1 files changed, 25 insertions(+), 0 deletions(-) > > > > diff --git a/src/acpi-dsdt.dsl b/src/acpi-dsdt.dsl > > index 158f6b4..7b55636 100644 > > --- a/src/acpi-dsdt.dsl > > +++ b/src/acpi-dsdt.dsl > > @@ -33,6 +33,31 @@ DefinitionBlock ( > > > > > > /**************************************************************** > > + * OS detection > > + ****************************************************************/ > > + > > + Scope(\_SB) { > > + External(\P1V, IntObj) > > + > > + Method(_INI) { > > + If (CondRefOf (\_OSI, Local0)) { > > + /* disable 64-bit PCI window for Windows XP and its > > variants */ > > + If (\_OSI ("Windows 2001")) { > > + Store (Zero, P1V) > > + } > > + > > + If (\_OSI ("Windows 2001 SP1")) { > > + Store (Zero, P1V) > > + } > > + > > + If (\_OSI ("Windows 2001 SP2")) { > > + Store (Zero, P1V) > > + } > > + } > > + } > > + } > > + > > +/**************************************************************** > > * PCI Bus definition > > ****************************************************************/ > > > > -- > > 1.7.1 _______________________________________________ SeaBIOS mailing list SeaBIOS@seabios.org http://www.seabios.org/mailman/listinfo/seabios