[Xen-devel] [PATCH v2 11/35] xen/arm64: head: Document enable_mmu()

[Julien Grall <julien.grall@xxxxxxx>]

Document the behavior and the main registers usage within enable_mmu().

Signed-off-by: Julien Grall <julien.grall@xxxxxxx>

---
    Changes in v2:
        - x2 and x3 are also clobbers. Update the comment accordingly
        - s/ID/1:1/
---
 xen/arch/arm/arm64/head.S | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index eddf663021..63563ef5e3 100644
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -576,6 +576,13 @@ virtphys_clash:
         ret
 ENDPROC(create_page_tables)
 
+/*
+ * Turn on the Data Cache and the MMU. The function will return on the 1:1
+ * mapping. In other word, the caller is responsible to switch to the runtime
+ * mapping.
+ *
+ * Clobbers x0 - x3
+ */
 enable_mmu:
         PRINT("- Turning on paging -\r\n")
 
-- 
2.11.0


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel