Re: unable to boot windows with 256 cpus

2020-07-16 Thread Igor Mammedov
On Wed, 15 Jul 2020 14:28:19 -0400 Peter Xu wrote: > On Wed, Jul 15, 2020 at 07:45:13PM +0200, Igor Mammedov wrote: > > While testing ACPI cpu hotplug changes I stumbled on BSOD in case > > QEMU is configured with 256 CPUs, Windows Server 2012R2x64 fails to boot > > with bugcheck 5C > > > > > >

Re: unable to boot windows with 256 cpus

2020-07-15 Thread Peter Xu
On Wed, Jul 15, 2020 at 07:45:13PM +0200, Igor Mammedov wrote: > While testing ACPI cpu hotplug changes I stumbled on BSOD in case > QEMU is configured with 256 CPUs, Windows Server 2012R2x64 fails to boot > with bugcheck 5C > > > qemu-system-x86_64 -m 4G -smp 2,sockets=64,cores=4,maxcpus=256 -M

unable to boot windows with 256 cpus

2020-07-15 Thread Igor Mammedov
While testing ACPI cpu hotplug changes I stumbled on BSOD in case QEMU is configured with 256 CPUs, Windows Server 2012R2x64 fails to boot with bugcheck 5C qemu-system-x86_64 -m 4G -smp 2,sockets=64,cores=4,maxcpus=256 -M q35,kernel-irqchip=split -enable-kvm -device intel-iommu,intremap=on,eim=