Re: KVM bug

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On Friday 24 July 2009 04:59:51 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

The first thing come to my mind is your bios lacks some reserved page for VMX. 
See qemu-kvm/kvm/bios/rombios.c for E820 layout in KVM. And is your bios 
bigger than 256KB?

-- 
regards
Yang, Sheng

>
>
> unhandled vm exit: 0x80000021 vcpu_id 0
> rax 0000000000000000 rbx 000000000000133a rcx 0000000000000000 rdx
> 0000000000000008 rsi 0000000000000008 rdi 0000000000000008 rsp
> 00000000000011a4 rbp 00000000000011bc r8  0000000000000000 r9 
> 0000000000000000 r10 0000000000000000 r11 0000000000000000 r12
> 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15
> 0000000000000000 rip 00000000000007ca rflags 00023046
> cs f000 (000f0000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> ds 88f9 (00088f9b/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> es 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> ss c181 (000c1810/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
> tr 0000 (fffbd000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
> ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
> gdt 88f6b/30
> idt 0/3ff
> cr0 0 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
> Abort
>
>
>
>
>
> I am not sure what's going on but expecting some bug in KVM and will
> appreciate some help.
>
>
> As forum don't accept posting with attachments. I can forward the BIOS
> image to anybody who wants to help.
>
>
> Thanks
> Abhishek
>
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