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-rw-r--r--src/arch/i386/firmware/pcbios/e820mangler.S2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/arch/i386/firmware/pcbios/e820mangler.S b/src/arch/i386/firmware/pcbios/e820mangler.S
index ad773f74..437efa77 100644
--- a/src/arch/i386/firmware/pcbios/e820mangler.S
+++ b/src/arch/i386/firmware/pcbios/e820mangler.S
@@ -436,6 +436,7 @@ get_mangled_e820:
/* Peek ahead to see if there are any further nonempty regions */
pushal
+ pushw %es
subw $20, %sp
movl $0xe820, %eax
movl $SMAP, %edx
@@ -445,6 +446,7 @@ get_mangled_e820:
movw %sp, %di
call get_nonempty_e820
addr32 leal 20(%esp), %esp /* avoid changing flags */
+ popw %es
popal
jnc 99f /* There are further nonempty regions */