Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: f2c63dca1bc5201903b75a8551afdf2c7ab2fc4d
https://github.com/tianocore/edk2/commit/f2c63dca1bc5201903b75a8551afdf2c7ab2fc4d
Author: Chao Liu <[email protected]>
Date: 2026-01-19 (Mon, 19 Jan 2026)
Changed paths:
M UefiCpuPkg/Library/BaseRiscV64CpuTimerLib/BaseRiscV64CpuTimerLib.inf
M UefiCpuPkg/Library/BaseRiscV64CpuTimerLib/CpuTimerLib.c
Log Message:
-----------
UefiCpuPkg/BaseRiscV64CpuTimerLib: Add constructor to initialize mTimeBase
Add a constructor function that calls GetPerformanceCounterProperties(NULL,
NULL)
to ensure mTimeBase is initialized during DXE phase, before virtual memory is
enabled.
This fixes crashes on RISC-V platforms without fw_cfg device support (e.g.,
QEMU rvsp-ref) where Runtime Services may call GetPerformanceCounterProperties()
before mTimeBase has been initialized. When virtual memory is then enabled, the
uninitialized mTimeBase value causes HOB access to fail with a page fault.
Fixes: https://github.com/tianocore/edk2/issues/11747
Signed-off-by: Chao Liu <[email protected]>
Reported-by: Xiaofan Tan <[email protected]>
Suggested-by: Laszlo Ersek <[email protected]>
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