linux/include/xen
Paul Durrant 1ee54195a3 xen/interface: re-define FRONT/BACK_RING_ATTACH()
Currently these macros are defined to re-initialize a front/back ring
(respectively) to values read from the shared ring in such a way that any
requests/responses that are added to the shared ring whilst the front/back
is detached will be skipped over. This, in general, is not a desirable
semantic since most frontend implementations will eventually block waiting
for a response which would either never appear or never be processed.

Since the macros are currently unused, take this opportunity to re-define
them to re-initialize a front/back ring using specified values. This also
allows FRONT/BACK_RING_INIT() to be re-defined in terms of
FRONT/BACK_RING_ATTACH() using a specified value of 0.

NOTE: BACK_RING_ATTACH() will be used directly in a subsequent patch.

Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2019-12-20 13:44:42 +01:00
..
arm swiotlb-xen: simplify cache maintainance 2019-09-11 12:43:27 +02:00
interface xen/interface: re-define FRONT/BACK_RING_ATTACH() 2019-12-20 13:44:42 +01:00
acpi.h xen / ACPI: notify xen when reduced hardware sleep is available 2013-07-31 14:22:35 +02:00
balloon.h xen: remove tmem driver 2019-07-17 08:09:58 +02:00
events.h xen/events: fix binding user event channels to cpus 2019-07-17 08:09:57 +02:00
features.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
grant_table.h xen/grant-table: Allow allocating buffers suitable for DMA 2018-07-26 23:05:14 -04:00
hvc-console.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hvm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mem-reservation.h xen/balloon: add runtime control for scrubbing ballooned out pages 2018-09-14 08:51:10 -04:00
page.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
platform_pci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
swiotlb-xen.h dma-mapping: drop the dev argument to arch_sync_dma_for_* 2019-11-20 20:31:38 +01:00
xen-front-pgdir-shbuf.h xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
xen-ops.h xen/efi: have a common runtime setup function 2019-10-02 10:31:07 -04:00
xen.h block: pass page to xen_biovec_phys_mergeable 2019-04-01 12:11:13 -06:00
xenbus_dev.h xenbus: Add support for xenbus backend in stub domain 2012-05-21 09:53:18 -04:00
xenbus.h xenbus: limit when state is forced to closed 2019-12-20 13:44:38 +01:00