I'm using sedf scheduler with changeset 10520 on my VT machine which has 4 cpus.
I created a 4 vcpus SMP VMX guest and then a windows guest installer, I got:
(XEN) (GUEST: 14) ata0-0: PCHS=40631663 translation=lba LCHS=10156463
(XEN) (GUEST: 14) ata0 master: QEMU HARDDISK ATA-2 Hard-Disk (2000 MBytes)
(XEN) (GUEST: 14) ata0 slave: Unknown device
(XEN) (GUEST: 14) ata1 master: QEMU CD-ROM ATAPI-4 CD-Rom/DVD-Rom
(XEN) (GUEST: 14) ata1 slave: Unknown device
(XEN) (GUEST: 14) 
(XEN) (GUEST: 14) Booting from CD-Rom...
(XEN) (GUEST: 14) Invalid %cs=0x58 for protected mode
(XEN) (GUEST: 14) 
(XEN) (GUEST: 14) Halt called from %eip 0xD32DA 
But if I only create the windows guest, all is OK.
So seems we have bug if one physical cpu is used by 2 different VMX guest, I'm 
looking at it.
-Xin
 
>-----Original Message-----
>From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
>[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Zheng, Jeff
>Sent: 2006年6月28日 11:40
>To: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: [Xen-devel] credit scheduler issues in 64bit hypervisor 
>
>When we use credit scheduler in 64bit hypervisor, we see these issues:
>+ Booting 32bit VMX domain hangs at "ACPI: Unable to locate RSDP".
>+ Booting 32pae VMX domain will get a kernel panic.
>+ Booting indows SP1/SP2 Guest will crash guest OS.
>
>We don't see these issues with BVT scheduler.
>
>Bests
>Jeff
>
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