plat/xen/x86: Add `bpt_unmap_mrd` empty memory region descriptor

In order not to generate undefined references when building and
not to unmap anything, add an empty `bpt_unmap_mrd` memory region
descriptor.

Signed-off-by: Sergiu Moga <sergiu.moga@protonmail.com>
Reviewed-by: Michalis Pappas <michalis@unikraft.io>
Approved-by: Razvan Deaconescu <razvand@unikraft.io>
Tested-by: Unikraft CI <monkey@unikraft.io>
GitHub-Closes: #848

diff --git a/plat/xen/x86/entry64.S b/plat/xen/x86/entry64.S
index 2c7df086bc2a2d10a4f71309378b2acbd2c696a7..b10978528c52f6cc491a8a6c1af7a7c491e99d0f 100644 (file)
--- a/plat/xen/x86/entry64.S
+++ b/plat/xen/x86/entry64.S
@@ -420,3 +420,12 @@ TRAP_ENTRY alignment_check,     1
 /* no Machine Check */
 TRAP_ENTRY simd_error,          0
 /* no Virtualization Exception */
+
+/*
+ * We do not want to unmap anything.
+ */
+.section .bss
+.align 4
+.globl bpt_unmap_mrd
+bpt_unmap_mrd:
+.space 64