[PATCH v2 12/15] xen/asm-generic: introduce generic header altp2m.h

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

<asm/alt2pm.h> is common between archs so it is moved to
asm-generic.

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
Changes in V2:
        - change uint16_t to unsigned int in declaration of altp2m_vcpu_idx
        - update the commit message
---
 xen/include/asm-generic/altp2m.h | 34 ++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 xen/include/asm-generic/altp2m.h

diff --git a/xen/include/asm-generic/altp2m.h b/xen/include/asm-generic/altp2m.h
new file mode 100644
index 0000000000..39865a842a
--- /dev/null
+++ b/xen/include/asm-generic/altp2m.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_ALTP2M_H
+#define __ASM_GENERIC_ALTP2M_H
+
+#include <xen/bug.h>
+
+struct domain;
+struct vcpu;
+
+/* Alternate p2m on/off per domain */
+static inline bool altp2m_active(const struct domain *d)
+{
+    /* Not implemented on GENERIC. */
+    return false;
+}
+
+/* Alternate p2m VCPU */
+static inline unsigned int altp2m_vcpu_idx(const struct vcpu *v)
+{
+    /* Not implemented on GENERIC, should not be reached. */
+    BUG();
+    return 0;
+}
+
+#endif /* __ASM_GENERIC_ALTP2M_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0