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Re: [Qemu-block] [PATCH v3 04/18] xen: create xenstore areas for XenDevi
From: |
Anthony PERARD |
Subject: |
Re: [Qemu-block] [PATCH v3 04/18] xen: create xenstore areas for XenDevice-s |
Date: |
Tue, 11 Dec 2018 15:19:47 +0000 |
User-agent: |
Mutt/1.11.1 (2018-12-01) |
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 <address@hidden>
> ---
>
> v3:
> - Add transaction id parameters to xen-bus-helper functions
> - Not added Anthony's R-b because of change
>
Reviewed-by: Anthony PERARD <address@hidden>
--
Anthony PERARD
- [Qemu-block] [PATCH v3 00/18] Xen PV backend 'qdevification', Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 07/18] xen: add event channel interface for XenDevice-s, Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 02/18] xen: introduce new 'XenBus' and 'XenDevice' object hierarchy, Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 04/18] xen: create xenstore areas for XenDevice-s, Paul Durrant, 2018/12/11
- Re: [Qemu-block] [PATCH v3 04/18] xen: create xenstore areas for XenDevice-s,
Anthony PERARD <=
- [Qemu-block] [PATCH v3 06/18] xen: add grant table interface for XenDevice-s, Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 03/18] xen: introduce 'xen-block', 'xen-disk' and 'xen-cdrom', Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 09/18] xen: remove unnecessary code from dataplane/xen-block.c, Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 05/18] xen: add xenstore watcher infrastructure, Paul Durrant, 2018/12/11
- [Qemu-block] [PATCH v3 01/18] xen: re-name XenDevice to XenLegacyDevice..., Paul Durrant, 2018/12/11