lkml.org 
[lkml]   [2019]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3 3/4] xen/interface: re-define FRONT/BACK_RING_ATTACH()
From
Date
On 11.12.19 16:29, Paul Durrant wrote:
> 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>


Juergen

\
 
 \ /
  Last update: 2019-12-12 07:05    [W:0.062 / U:3.728 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site