diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/x86/sipi_vector.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/cpu/x86/sipi_vector.S b/src/cpu/x86/sipi_vector.S index e1b90890ed..f9b29576bd 100644 --- a/src/cpu/x86/sipi_vector.S +++ b/src/cpu/x86/sipi_vector.S @@ -115,6 +115,10 @@ _start: jz microcode_done /* Bypass if no microde exists. */ /* Get the Microcode version. */ + xorl %eax, %eax + xorl %edx, %edx + movl $IA32_BIOS_SIGN_ID, %ecx + wrmsr mov $1, %eax cpuid mov $IA32_BIOS_SIGN_ID, %ecx |