On Thu, Dec 16, 2010 at 04:37:41PM +0900, Yoshiaki Tamura wrote: > 2010/11/28 Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx>: > > 2010/11/28 Michael S. Tsirkin <mst@xxxxxxxxxx>: > >> 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 <tamura.yoshiaki@xxxxxxxxxxxxx> > >> > >> 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. > > > > Haven't thought about eventfd yet. Will try doing it in the next > > spin. > > Hi Michael, > > I looked into eventfd and realized it's only used with vhost now. There are patches on list to use it for block/userspace net. > However, I > believe vhost bypass the net layer in qemu, and there is no way for Kemari to > detect the outputs. To me, it doesn't make sense to extend this patch to > support eventfd... > > Thanks, > > Yoshi > > > > > Yoshi > > > >> > >>> --- > >>> 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 > >>> > >>> -- > >>> To unsubscribe from this list: send the line "unsubscribe kvm" in > >>> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>> More majordomo info at http://vger.kernel.org/majordomo-info.html > >> -- > >> To unsubscribe from this list: send the line "unsubscribe kvm" in > >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >> More majordomo info at http://vger.kernel.org/majordomo-info.html > >> > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
