Re: [Qemu-devel] [PATCH v3 6/9] kvmvapic: Introduce TPR access optimization for Windows guests

[Avi Kivity <avi@redhat.com>]

On 02/14/2012 05:13 PM, Jan Kiszka wrote:
> This enables acceleration for MMIO-based TPR registers accesses of
> 32-bit Windows guest systems. It is mostly useful with KVM enabled,
> either on older Intel CPUs (without flexpriority feature, can also be
> manually disabled for testing) or any current AMD processor.
>
> The approach introduced here is derived from the original version of
> qemu-kvm. It was refactored, documented, and extended by support for
> user space APIC emulation, both with and without KVM acceleration. The
> VMState format was kept compatible, so was the ABI to the option ROM
> that implements the guest-side para-virtualized driver service. This
> enables seamless migration from qemu-kvm to upstream or, one day,
> between KVM and TCG mode.
>
>
> +printf("patch @%lx\n", (long)ip);

Debug code


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error compiling committee.c: too many arguments to function