Re: [PATCH][UPDATE] shortcut for lightweight VM Exit

Avi Kivity
2007-04-30T07:49:36Z

Dong, Eddie wrote:
> This patch provides short cut handling for light weight VM Exit, which
> can boost KB performance 11% under FC5 guest.
> Any comments?

While the patch looks good, it kills FC6 x86_64 boot with a double
fault. Guest kernel is 2.6.18-1.2798. dmesg says

inject_page_fault: double fault 0x7fff79b58fd8 @ 0xffffffff8025cca1

I've reproduced this with the your patch applied on top of
8dfdb0d81fb9e858c14e03fd5e007b20167cd065, which is before my mmio
optimization that caused another regression, to make sure it is not
exposing a bug in my patch.

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error compiling committee.c: too many arguments to function