On 9/17/25 05:47, [email protected] wrote:
From: Weiwei Li <[email protected]>
The problem is triggered in following conditions:
- thread 1:
run spin loop(ended with a direct jump) like "0x0000006f, // jal zero, #0"
- thread 2:
do something, and then modify the loop code of thread 1 to nop isntruction,
finally wait thread 1 exit.
The loop tb which is patched to jump to itself, will not be updated in this case
and will never exit.
Signed-off-by: Weiwei Li <[email protected]>
---
accel/tcg/cpu-exec.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
If there's a problem with 1 tb, there's also a problem with 2 tb like
jal zero, #4
jal zero, #-4
But unlinking the tb should be part of invalidation, so I don't quite see where the
problem is. You need to expand on the description of the problem.
r~
