lkml.org 
[lkml]   [2024]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/4] vhost: Cleanup
Date
This is suggested by Michael S. Tsirkin according to [1] and the goal
is to apply smp_rmb() inside vhost_get_avail_idx() if needed. With it,
the caller of the function needn't to worry about memory barriers. Since
we're here, other cleanups are also applied.

[1] https://lore.kernel.org/virtualization/20240327155750-mutt-send-email-mst@kernel.org/

PATCH[1] improves vhost_get_avail_idx() so that smp_rmb() is applied if
needed. Besides, the sanity checks on the retrieved available
queue index are also squeezed to vhost_get_avail_idx()
PATCH[2] drops the local variable @last_avail_idx since it's equivalent
to vq->last_avail_idx
PATCH[3] improves vhost_get_avail_head(), similar to what we're doing
for vhost_get_avail_idx(), so that the relevant sanity checks
on the head are squeezed to vhost_get_avail_head()
PATCH[4] Reformat vhost_{get, put}_user() by using tab instead of space
as the terminator for each line

Gavin Shan (3):
vhost: Drop variable last_avail_idx in vhost_get_vq_desc()
vhost: Improve vhost_get_avail_head()
vhost: Reformat vhost_{get, put}_user()

Michael S. Tsirkin (1):
vhost: Improve vhost_get_avail_idx() with smp_rmb()

drivers/vhost/vhost.c | 215 +++++++++++++++++++-----------------------
1 file changed, 97 insertions(+), 118 deletions(-)

Changelog
=========
v2:
* Improve vhost_get_avail_idx() as Michael suggested in [1]
as above (Michael)
* Correct @head's type from 'unsigned int' to 'int' (ltp@intel.com)

--
2.44.0


\
 
 \ /
  Last update: 2024-04-29 12:14    [W:0.050 / U:1.564 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site