Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 4ff51f3780f92f66c995e276fea8b49f5a02b889
https://github.com/tianocore/edk2/commit/4ff51f3780f92f66c995e276fea8b49f5a02b889
Author: Gerd Hoffmann <[email protected]>
Date: 2025-12-04 (Thu, 04 Dec 2025)
Changed paths:
M OvmfPkg/Library/MemDebugLogLib/MemDebugLogCommon.c
Log Message:
-----------
OvmfPkg/MemDebugLogLib: use AcquireSpinLockOrFail
Drop log lines if we can't get the spin lock. Not nice, but better than
risking a deadlock.
Some background: Most of edk2 runs single-threaded on the BSP, so if
something holds the lock it is rather unlikely that waiting is going to
help. Specifically I think a deadlock can happen if (a) a timer
interrupt arrives while the lock is held, and (b) some higher-TPL timer
handler tries to print something to the debug log.
Signed-off-by: Gerd Hoffmann <[email protected]>
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