[xen staging] test/vpci: add dummy cfcheck define

[patchbot@xxxxxxx]

commit b71419530d70d9b1f2ba524aabd27a9efe08f52f
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Thu Oct 20 16:36:48 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Oct 20 16:36:48 2022 +0200

    test/vpci: add dummy cfcheck define
    
    Some vpci functions got the cfcheck attribute added, but that's not
    defined in the user-space test harness, so add a dummy define in order
    for the harness to build.
    
    Fixes: 4ed7d5525f ('xen/vpci: CFI hardening')
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Release-acked-by: Henry Wang <Henry.Wang@xxxxxxx>
---
 tools/tests/vpci/emul.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/tests/vpci/emul.h b/tools/tests/vpci/emul.h
index 2e1d3057c9..386b15eb86 100644
--- a/tools/tests/vpci/emul.h
+++ b/tools/tests/vpci/emul.h
@@ -37,6 +37,7 @@
 #define prefetch(x) __builtin_prefetch(x)
 #define ASSERT(x) assert(x)
 #define __must_check __attribute__((__warn_unused_result__))
+#define cf_check
 
 #include "list.h"
 
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