REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1417
Since BaseLib API AsmLfence() is a x86 arch specific API and should be avoided using in generic codes, this commit replaces the usage of AsmLfence() with arch-generic API SpeculationBarrier(). Cc: Ard Biesheuvel <[email protected]> Cc: Jiewen Yao <[email protected]> Cc: Liming Gao <[email protected]> Cc: Eric Dong <[email protected]> Cc: Ruiyu Ni <[email protected]> Cc: Laszlo Ersek <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu <[email protected]> --- UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c index 19979d5418..8c9fa14b5b 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c @@ -238,10 +238,10 @@ SmmReadSaveState ( return EFI_INVALID_PARAMETER; } // - // The AsmLfence() call here is to ensure the above check for the CpuIndex - // has been completed before the execution of subsequent codes. + // The SpeculationBarrier() call here is to ensure the above check for the + // CpuIndex has been completed before the execution of subsequent codes. // - AsmLfence (); + SpeculationBarrier (); // // Check for special EFI_SMM_SAVE_STATE_REGISTER_PROCESSOR_ID -- 2.12.0.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
