diff options
Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/entry32.S | 3 | ||||
| -rw-r--r-- | src/cpu/x86/lapic/secondary.S | 3 | ||||
| -rw-r--r-- | src/cpu/x86/sipi_vector.S | 3 | ||||
| -rw-r--r-- | src/cpu/x86/smm/smm_stub.S | 3 | ||||
| -rw-r--r-- | src/cpu/x86/smm/smmhandler.S | 3 |
5 files changed, 10 insertions, 5 deletions
diff --git a/src/cpu/x86/entry32.S b/src/cpu/x86/entry32.S index ad4a7d032b..215d60182a 100644 --- a/src/cpu/x86/entry32.S +++ b/src/cpu/x86/entry32.S @@ -37,8 +37,9 @@ bootblock_protected_mode_entry: movw %ax, %ds movw %ax, %es movw %ax, %ss + xor %ax, %ax /* zero out the gs and fs segment index */ movw %ax, %fs - movw %ax, %gs + movw %ax, %gs /* Will be used for cpu_info */ /* Restore the BIST value to %eax */ movl %ebp, %eax diff --git a/src/cpu/x86/lapic/secondary.S b/src/cpu/x86/lapic/secondary.S index d36bc9a645..d2d43a2b5b 100644 --- a/src/cpu/x86/lapic/secondary.S +++ b/src/cpu/x86/lapic/secondary.S @@ -52,8 +52,9 @@ __ap_protected_start: movw %ax, %ds movw %ax, %es movw %ax, %ss + xor %ax, %ax /* zero out the gs and fs segment index */ movw %ax, %fs - movw %ax, %gs + movw %ax, %gs /* Will be used for cpu_info */ /* Load the Interrupt descriptor table */ lidt idtarg diff --git a/src/cpu/x86/sipi_vector.S b/src/cpu/x86/sipi_vector.S index aa95461ae8..44b772bcc2 100644 --- a/src/cpu/x86/sipi_vector.S +++ b/src/cpu/x86/sipi_vector.S @@ -77,8 +77,9 @@ _start: movw %ax, %ds movw %ax, %es movw %ax, %ss + xor %ax, %ax /* zero out the gs and fs segment index */ movw %ax, %fs - movw %ax, %gs + movw %ax, %gs /* Will be used for cpu_info */ /* Load the Interrupt descriptor table */ mov idt_ptr, %ebx diff --git a/src/cpu/x86/smm/smm_stub.S b/src/cpu/x86/smm/smm_stub.S index 44ee7cb327..aa48ab69ec 100644 --- a/src/cpu/x86/smm/smm_stub.S +++ b/src/cpu/x86/smm/smm_stub.S @@ -93,8 +93,9 @@ smm_trampoline32: movw %ax, %ds movw %ax, %es movw %ax, %ss + xor %ax, %ax /* zero out the gs and fs segment index */ movw %ax, %fs - movw %ax, %gs + movw %ax, %gs /* Will be used for cpu_info */ /* The CPU number is calculated by reading the initial APIC id. Since * the OS can manipulate the APIC id use the non-changing cpuid result diff --git a/src/cpu/x86/smm/smmhandler.S b/src/cpu/x86/smm/smmhandler.S index b7805d06ab..19793a0f84 100644 --- a/src/cpu/x86/smm/smmhandler.S +++ b/src/cpu/x86/smm/smmhandler.S @@ -123,8 +123,9 @@ untampered_lapic: movw %ax, %ds movw %ax, %es movw %ax, %ss + xor %ax, %ax /* zero out the gs and fs segment index */ movw %ax, %fs - movw %ax, %gs + movw %ax, %gs /* Will be used for cpu_info */ /* FIXME: Incompatible with X2APIC_SUPPORT. */ /* Get this CPU's LAPIC ID */ |