Re: [Qemu-devel] [PATCH v3 04/18] xen: create xenstore areas for XenDevice-s

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

On Tue, Dec 11, 2018 at 10:47:04AM +0000, Paul Durrant wrote:
> This patch adds a new source module, xen-bus-helper.c, which builds on
> basic libxenstore primitives to provide functions to create (setting
> permissions appropriately) and destroy xenstore areas, and functions to
> 'printf' and 'scanf' nodes therein. The main xen-bus code then uses
> these primitives [1] to initialize and destroy the frontend and backend
> areas for a XenDevice during realize and unrealize respectively.
> 
> The 'xen-block' implementation is extended with a 'get_name' method that
> returns the VBD number. This number is required to 'name' the xenstore
> areas.
> 
> NOTE: An exit handler is also added to make sure the xenstore areas are
>       cleaned up if QEMU terminates without devices being unrealized.
> 
> [1] The 'scanf' functions are actually not yet needed, but they will be
>     needed by code delivered in subsequent patches.
> 
> Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
> ---
> 
> v3:
>  - Add transaction id parameters to xen-bus-helper functions
>  - Not added Anthony's R-b because of change
> 

Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>

-- 
Anthony PERARD