UefiCpuPkg/PiSmmCpuDxeSmm: patch "gSmmCr3" with PatchInstructionX86()
Rename the variable to "gPatchSmmCr3" so that its association with PatchInstructionX86() is clear from the declaration, change its type to X86_ASSEMBLY_PATCH_LABEL, and patch it with PatchInstructionX86(). This lets us remove the binary (DB) encoding of some instructions in "SmmInit.nasm". Cc: Eric Dong <eric.dong@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=866 Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
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@@ -406,7 +406,7 @@ SmmRelocateBases (
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// Patch ASM code template with current CR0, CR3, and CR4 values
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//
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gSmmCr0 = (UINT32)AsmReadCr0 ();
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gSmmCr3 = (UINT32)AsmReadCr3 ();
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PatchInstructionX86 (gPatchSmmCr3, AsmReadCr3 (), 4);
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gSmmCr4 = (UINT32)AsmReadCr4 ();
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//
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