Re: [Xen-devel] Re: [Qemu-devel] [PATCH V9 03/16] xen: Add a generic layer for xc calls

[Anthony PERARD <anthony.perard@citrix.com>]

On Wed, Jan 26, 2011 at 22:49, Anthony Liguori <anthony@codemonkey.ws> wrote:
> On 01/25/2011 08:29 AM, anthony.perard@citrix.com wrote:
>>
>> From: Alexander Graf<agraf@suse.de>
>>
>> This patch adds a generic layer for xc calls, allowing us to choose
>> between the
>> xenner and xen implementations at runtime.
>>
>> Signed-off-by: Alexander Graf<agraf@suse.de>
>> Signed-off-by: Anthony PERARD<anthony.perard@citrix.com>
>> ---
>>  hw/xen_interfaces.c |  100
>> +++++++++++++++++++++++++++++++++++++++++++++++++
>>  hw/xen_interfaces.h |  104
>> +++++++++++++++++++++++++++++++++++++++++++++++++++
>>  hw/xen_redirect.h   |   56 +++++++++++++++++++++++++++
>>  3 files changed, 260 insertions(+), 0 deletions(-)
>>  create mode 100644 hw/xen_interfaces.c
>>  create mode 100644 hw/xen_interfaces.h
>>  create mode 100644 hw/xen_redirect.h
>>
>> diff --git a/hw/xen_interfaces.c b/hw/xen_interfaces.c
>> new file mode 100644
>> index 0000000..09f40e0
>> --- /dev/null
>> +++ b/hw/xen_interfaces.c
>> @@ -0,0 +1,100 @@
>>
>
> Needs a copyright.

Will put one.


>> diff --git a/hw/xen_interfaces.h b/hw/xen_interfaces.h
>> new file mode 100644
>> index 0000000..1086850
>> --- /dev/null
>> +++ b/hw/xen_interfaces.h
>> @@ -0,0 +1,104 @@
>> +#ifndef QEMU_HW_XEN_INTERFACES_H
>> +#define QEMU_HW_XEN_INTERFACES_H 1
>> +
>> +#include<xenctrl.h>
>> +#include<xs.h>
>> +
>> +/* ------------------------------------------------------------- */
>> +/* xen event channel interface                                   */
>> +
>> +struct XenEvtOps {
>> +    int (*open)(void);
>> +    int (*domid)(int xce_handle, int domid);
>> +    int (*close)(int xce_handle);
>> +    int (*fd)(int xce_handle);
>> +    int (*notify)(int xce_handle, evtchn_port_t port);
>> +    evtchn_port_or_error_t (*bind_unbound_port)(int xce_handle, int
>> domid);
>> +    evtchn_port_or_error_t (*bind_interdomain)(int xce_handle, int domid,
>> +                                               evtchn_port_t
>> remote_port);
>> +    evtchn_port_or_error_t (*bind_virq)(int xce_handle, unsigned int
>> virq);
>> +    int (*unbind)(int xce_handle, evtchn_port_t port);
>> +    evtchn_port_or_error_t (*pending)(int xce_handle);
>> +    int (*unmask)(int xce_handle, evtchn_port_t port);
>> +};
>> +extern struct XenEvtOps xc_evtchn;
>>
>
> typedef away the struct please.

Ok, I will do that.


>> diff --git a/hw/xen_redirect.h b/hw/xen_redirect.h
>> new file mode 100644
>> index 0000000..6ddecf3
>> --- /dev/null
>> +++ b/hw/xen_redirect.h
>> @@ -0,0 +1,56 @@
>> +#ifndef QEMU_HW_XEN_REDIRECT_H
>> +#define QEMU_HW_XEN_REDIRECT_H 1
>> +
>> +#include "xen_interfaces.h"
[...]
>> +
>> +/* xenstore interface */
>> +#define xs_daemon_open              xs.daemon_open
>> +#define xs_domain_open              xs.domain_open
>> +#define xs_daemon_open_readonly     xs.daemon_open_readonly
>> +#define xs_daemon_close             xs.daemon_close
>
> static inline please.

Because the define have the same name as the Xen function, I will have
to rename all these functions, or I can just replace all calls in
xen*.c files.

> Regards,

Thanks,

-- 
Anthony PERARD