After introduction of lock_evaluate_nospec() using bool type, building Xen on Arm with UBSAN enabled fails:
In file included from ./include/xen/spinlock.h:4, from common/ubsan/ubsan.c:13: ./include/xen/nospec.h:79:22: error: unknown type name ‘bool’ 79 | static always_inline bool lock_evaluate_nospec(bool condition) There is no issue on x86, as xen/stdbool.h is included somewhere along the asm/nospec.h path, which is not the case for other architectures. Fixes: 7ef0084418e1 ("x86/spinlock: introduce support for blocking speculation into critical regions") Signed-off-by: Michal Orzel <michal.or...@amd.com> --- xen/include/xen/nospec.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/include/xen/nospec.h b/xen/include/xen/nospec.h index e8d73f9538e5..9fb15aa26aa9 100644 --- a/xen/include/xen/nospec.h +++ b/xen/include/xen/nospec.h @@ -7,6 +7,8 @@ #ifndef XEN_NOSPEC_H #define XEN_NOSPEC_H +#include <xen/stdbool.h> + #include <asm/nospec.h> /** -- 2.25.1