diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2023-05-13 22:12:23 +1000 |
|---|---|---|
| committer | Reza Arbab <arbab@linux.ibm.com> | 2023-06-06 13:32:12 -0500 |
| commit | bd0595f7f3827d2a402819c9b215a9ceba254972 (patch) | |
| tree | 27e31e9b767a92d25c92ec88b578cadd6b41429c /platforms | |
| parent | 1e7dd419df98a948506c918d66007a05a7aebce0 (diff) | |
| download | skiboot-bd0595f7f3827d2a402819c9b215a9ceba254972.zip skiboot-bd0595f7f3827d2a402819c9b215a9ceba254972.tar.gz skiboot-bd0595f7f3827d2a402819c9b215a9ceba254972.tar.bz2 | |
ipmi: Fix potential infinite loop in sync_msg polling
Current gcc with -Os happens to generate code that re-loads the variable
in the loop, but that could change without notice, and with -O2 it does
infinite loop if sync_msg is !NULL, because it is not declared volatile
and there is no compiler barrier in the loop.
Add the usual cpu_relax() there to provide the compiler barrier.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Stewart Smith <stewart@flamingspork.com>
Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
Diffstat (limited to 'platforms')
0 files changed, 0 insertions, 0 deletions