@@ -139,12 +139,13 @@ start64:
.balign 8
.word 0
idt_48: .word 0, 0, 0 # base = limit = 0
- .word 0
-gdt_48: .word .Ltrampoline_gdt_end - trampoline_gdt - 1
- .long bootsym_rel(trampoline_gdt,4)
trampoline_gdt:
- .quad 0x0000000000000000 /* 0x0000: unused */
+ .word 0 /* 0x0000: unused (reused for GDTR) */
+gdt_48:
+ .word .Ltrampoline_gdt_end - trampoline_gdt - 1
+ .long bootsym_rel(trampoline_gdt, 4)
+
.quad 0x00cf9b000000ffff /* 0x0008: ring 0 code, 32-bit mode */
.quad 0x00af9b000000ffff /* 0x0010: ring 0 code, 64-bit mode */
.quad 0x00cf93000000ffff /* 0x0018: ring 0 data */
Saves 8 bytes in the trampoline. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> --- CC: Jan Beulich <JBeulich@suse.com> CC: Wei Liu <wl@xen.org> CC: Roger Pau Monné <roger.pau@citrix.com> --- xen/arch/x86/boot/trampoline.S | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)