Always set WP in CR0.

[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / X64 / SmiEntry.asm

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.asm b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.asm
index 4f5c03c5cf5fe87a71b25d33be66d9e12531a163..094cf2c3da330820ef9056c57ff78aaf0cbfa6f4 100644 (file)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.asm
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.asm
@@ -140,7 +140,7 @@ Base:
     or      ah, 1\r
     wrmsr\r
     mov     rbx, cr0\r
-    bts     ebx, 31\r
+    or      ebx, 080010000h            ; enable paging + WP\r
     mov     cr0, rbx\r
     retf\r
 @LongMode:                              ; long mode (64-bit code) starts here\r