[xen master] xen/riscv: introduce guest_atomics.h

[patchbot@xxxxxxx]

commit 2c162e2f69f79c21f2ea942de84150076d50e5c3
Author:     Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
AuthorDate: Mon Feb 5 16:32:12 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Feb 13 09:30:13 2024 +0100

    xen/riscv: introduce guest_atomics.h
    
    Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/riscv/include/asm/guest_atomics.h | 44 ++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/xen/arch/riscv/include/asm/guest_atomics.h 
b/xen/arch/riscv/include/asm/guest_atomics.h
new file mode 100644
index 0000000000..de54914454
--- /dev/null
+++ b/xen/arch/riscv/include/asm/guest_atomics.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_RISCV_GUEST_ATOMICS_H
+#define __ASM_RISCV_GUEST_ATOMICS_H
+
+#include <xen/bug.h>
+
+#define guest_testop(name)                                                  \
+static inline int guest_##name(struct domain *d, int nr, volatile void *p)  \
+{                                                                           \
+    BUG_ON("unimplemented");                                                \
+                                                                            \
+    return 0;                                                               \
+}
+
+#define guest_bitop(name)                                                   \
+static inline void guest_##name(struct domain *d, int nr, volatile void *p) \
+{                                                                           \
+    BUG_ON("unimplemented");                                                \
+}
+
+guest_bitop(set_bit)
+guest_bitop(clear_bit)
+guest_bitop(change_bit)
+
+#undef guest_bitop
+
+guest_testop(test_and_set_bit)
+guest_testop(test_and_clear_bit)
+guest_testop(test_and_change_bit)
+
+#undef guest_testop
+
+#define guest_test_bit(d, nr, p) ((void)(d), test_bit(nr, p))
+
+#endif /* __ASM_RISCV_GUEST_ATOMICS_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
generated by git-patchbot for /home/xen/git/xen.git#master