On 08/10/2010 01:06 PM, Mohammed Gamal wrote:
On 8/10/10, Avi Kivity<avi@xxxxxxxxxx> wrote:
On 08/08/2010 03:24 PM, Mohammed Gamal wrote:
This patch introduces real mode interrupt injection for VMX.
It currently invokes the x86 emulator to emulate interrupts
instead of manually setting VMX controls.
Needless to say, this is not meant for merging in its current state.
The emulator still needs some more work to get this completely
operational.
Well, what happens when you run with it?
The guest fails at two instances. First it sometimes encounters a
group 7 instruction (0x0f 0x00), which the emulator doesn't emulate.
Here is the relevant part of the trace:
qemu-system-x86-4321 [001] 150.002191: kvm_entry: vcpu 0
qemu-system-x86-4321 [001] 150.002196: kvm_exit: reason
IO_INSTRUCTION rip 0x3
qemu-system-x86-4321 [001] 150.002197: kvm_pio: pio_read at 0x70
size 1 count 1
qemu-system-x86-4321 [001] 150.002205: kvm_entry: vcpu 0
qemu-system-x86-4321 [001] 150.002210: kvm_exit: reason
IO_INSTRUCTION rip 0x5
qemu-system-x86-4321 [001] 150.002213: kvm_emulate_insn: f0000:5:
e4 71 (real)
qemu-system-x86-4321 [001] 150.002215: kvm_pio: pio_write at 0x71
size 1 count 1
qemu-system-x86-4321 [001] 150.002223: kvm_entry: vcpu 0
qemu-system-x86-4321 [001] 150.002228: kvm_exit: reason
EXCEPTION_NMI rip 0x18
qemu-system-x86-4321 [001] 150.002229: kvm_page_fault: address
ffff error_code f
qemu-system-x86-4321 [001] 150.002270: kvm_entry: vcpu 0
qemu-system-x86-4321 [001] 150.002276: kvm_exit: reason
EXCEPTION_NMI rip 0x1a
qemu-system-x86-4321 [001] 150.002277: kvm_page_fault: address
d4dc error_code f
qemu-system-x86-4321 [001] 150.002284: kvm_entry: vcpu 0
qemu-system-x86-4321 [001] 150.002289: kvm_exit: reason
EXCEPTION_NMI rip 0x1d
qemu-system-x86-4321 [001] 150.002292: kvm_emulate_insn: f0000:1d:
0f 00 (real)
Could be a real instruction - we don't emulate all of group 7, and
they're useful.
Can you put your bios.bin somewhere? We can see what's there.
I'll look at the second case later.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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