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| author | rusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2014-02-26 04:21:14 +0000 |
|---|---|---|
| committer | rusty <rusty@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2014-02-26 04:21:14 +0000 |
| commit | 2a75834b5fa8813c3fa11ea41ff581463a030092 (patch) | |
| tree | 785ff831bb2eb29fe8d3e27d83b577d98f1410d5 /t4ht-workaround/t4ht | |
| parent | ce25e7bd05400bc7620c19a2fede3a86c6f5e39b (diff) | |
ccw: Fix requirements for processing adapter interrupts.
We currently mandate that the driver clears the summary indicator
before processing the queue indicator; this is bogus, as the requirement
for interrupt avoidance is rather that the driver unsets the summary
indicator before before it stops looking at the queue indicator.
In fact, the best way to get a race-free implementation of the interrupt
handler is to process the queue indicators twice; let's add a recommondation
to do that.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@au1.ibm.com> (merged)
git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@281 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
Diffstat (limited to 't4ht-workaround/t4ht')
0 files changed, 0 insertions, 0 deletions