On 07/23/2009 11:59 PM, Saksena, Abhishek wrote:
Hi I am trying to boot a patched version of Boch's BIOS on KVM. It works fine with Qemu with -no-kvm option. However I get following with KVM unhandled vm exit: 0x80000021 vcpu_id 0 ds 88f9 (00088f9b/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
When running on Intel we emulate real mode using vm86 mode. This mode requires ds.base == ds.selector << 4, which isn't the case here. You can modify the code to satisfy this requirement, or you can try the emulate_invalid_guest_state=1 module parameter (which will likely fail since it is not completely implemented).
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