On Fri, Mar 18, 2011 at 01:19:15PM +0100, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
>
> This allows to override the interrupt handling of QEMU in system mode.
> KVM will make use of it to set a specialized handler.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
> ---
> cpu-all.h | 14 +++++++++++++-
> exec.c | 4 +++-
> 2 files changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/cpu-all.h b/cpu-all.h
> index 4f4631d..5835cfa 100644
> --- a/cpu-all.h
> +++ b/cpu-all.h
> @@ -790,7 +790,19 @@ extern CPUState *cpu_single_env;
> #define CPU_INTERRUPT_SIPI 0x800 /* SIPI pending. */
> #define CPU_INTERRUPT_MCE 0x1000 /* (x86 only) MCE pending. */
>
> -void cpu_interrupt(CPUState *s, int mask);
> +#ifndef CONFIG_USER_ONLY
> +typedef void (*CPUInterruptHandler)(CPUState *, int);
> +
> +extern CPUInterruptHandler cpu_interrupt_handler;
> +
> +static inline void cpu_interrupt(CPUState *s, int mask)
> +{
> + cpu_interrupt_handler(s, mask);
> +}
> +#else /* USER_ONLY */
> +void cpu_interrupt(CPUState *env, int mask);
> +#endif /* USER_ONLY */
> +
> void cpu_reset_interrupt(CPUState *env, int mask);
>
> void cpu_exit(CPUState *s);
> diff --git a/exec.c b/exec.c
> index 4721f04..0c80f84 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -1632,7 +1632,7 @@ static void cpu_unlink_tb(CPUState *env)
>
> #ifndef CONFIG_USER_ONLY
> /* mask must never be zero, except for A20 change call */
> -void cpu_interrupt(CPUState *env, int mask)
> +static void tcg_handle_interrupt(CPUState *env, int mask)
> {
> int old_mask;
>
> @@ -1659,6 +1659,8 @@ void cpu_interrupt(CPUState *env, int mask)
> }
> }
>
> +CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
> +
> #else /* CONFIG_USER_ONLY */
>
> void cpu_interrupt(CPUState *env, int mask)
> --
> 1.7.1
Perhaps a function would be a better interface, but can be changed
later.
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