[SeaBIOS] [PATCH v2 0/4] support booting more than 255 CPUs with QEMU
imammedo at redhat.com
Mon Jun 20 13:15:43 CEST 2016
On Mon, 20 Jun 2016 10:45:37 +0200
Gerd Hoffmann <kraxel at redhat.com> wrote:
> On Mo, 2016-05-16 at 21:00 -0400, Kevin O'Connor wrote:
> > On Wed, May 11, 2016 at 12:03:37PM +0200, Igor Mammedov wrote:
> > > Changelog since:
> > > v1:
> > > * s/count_cpu/apic_id_init/
> > > * merge handle_x2apic() into apic_id_init()
> > > RFC:
> > > * move out max-cpus check out of mptable_setup()
> > > * factor out CPU counting/apic ID detection in separate
> > > function
> > > * return back accidentially deleted debug message with APIC ID
> > > * drop unused code in smp_setup()
> > >
> > > According to SDM, if CPUs have APIC ID more than 254
> > > firmware should pass control to OS in x2APIC mode.
> > > This series adds x2APIC bootstrap initialization.
> > >
> > > QEMU side of x2APIC support:
> > > https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg01094.html
> > Thanks Igor. The first 3 patches look good to me. I'll commit to
> > SeaBIOS once the corresponding QEMU support is accepted.
> Ping. What is the status of this in qemu? qemu 2.7 soft freeze is
> coming, and it is about time to plan the seabios update (1.9.3
I need to dust RFC off and respin as Paolo wanted to sync APIC ID
other way than in RFC and also on list there is v2 ACPI refactoring
that x2APIC enablement depends on.
wrt OVMF does suggested here fw_Cfg interface look ok to you?
More information about the SeaBIOS