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[Qemu-devel] Re: [PATCH 11/21] ioport: insert event_tap_ioport() to iopo


From: Michael S. Tsirkin
Subject: [Qemu-devel] Re: [PATCH 11/21] ioport: insert event_tap_ioport() to ioport_write().
Date: Sun, 28 Nov 2010 11:40:57 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, Nov 25, 2010 at 03:06:50PM +0900, Yoshiaki Tamura wrote:
> Record ioport event to replay it upon failover.
> 
> Signed-off-by: Yoshiaki Tamura <address@hidden>

Interesting. This will have to be extended to support ioeventfd.
Since each eventfd is really just a binary trigger
it should be enough to read out the fd state.

> ---
>  ioport.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/ioport.c b/ioport.c
> index aa4188a..74aebf5 100644
> --- a/ioport.c
> +++ b/ioport.c
> @@ -27,6 +27,7 @@
>  
>  #include "ioport.h"
>  #include "trace.h"
> +#include "event-tap.h"
>  
>  /***********************************************************/
>  /* IO Port */
> @@ -76,6 +77,7 @@ static void ioport_write(int index, uint32_t address, 
> uint32_t data)
>          default_ioport_writel
>      };
>      IOPortWriteFunc *func = ioport_write_table[index][address];
> +    event_tap_ioport(index, address, data);
>      if (!func)
>          func = default_func[index];
>      func(ioport_opaque[address], address, data);
> -- 
> 1.7.1.2
> 
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