x86/asm/entry/64: Use shorter MOVs from segment registers

[sfrench/cifs-2.6.git] / arch / x86 / kernel / entry_64.S

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 09c3f9e0e07e142d3254946b700b00aea9b94020..47b95813dc3724983538fe3d26d03bd8b4f7a0d4 100644 (file)
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1190,17 +1190,17 @@ ENTRY(xen_failsafe_callback)
        /*CFI_REL_OFFSET ds,DS*/
        CFI_REL_OFFSET r11,8
        CFI_REL_OFFSET rcx,0
-       movw %ds,%cx
+       movl %ds,%ecx
        cmpw %cx,0x10(%rsp)
        CFI_REMEMBER_STATE
        jne 1f
-       movw %es,%cx
+       movl %es,%ecx
        cmpw %cx,0x18(%rsp)
        jne 1f
-       movw %fs,%cx
+       movl %fs,%ecx
        cmpw %cx,0x20(%rsp)
        jne 1f
-       movw %gs,%cx
+       movl %gs,%ecx
        cmpw %cx,0x28(%rsp)
        jne 1f
        /* All segments match their saved values => Category 2 (Bad IRET). */