On 9/1/25 5:55 PM, Jan Beulich wrote:
On 29.08.2025 11:58, Teddy Astie wrote:
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ The format is based on [Keep a
Changelog](https://keepachangelog.com/en/1.0.0/)
- For x86, GCC 5.1 and Binutils 2.25, or Clang/LLVM 11
- For ARM32 and ARM64, GCC 5.1 and Binutils 2.25
- Linux based device model stubdomains are now fully supported.
+ - Clarify guest UUIDs as being big-endian encoded.
Is something like this really in need of having a ChangeLog entry?
Perhaps, you are right and there is no a lot of sense to have such item in
ChangeLog.
~ Oleksii
--- a/xen/include/public/xen.h
+++ b/xen/include/public/xen.h
@@ -973,6 +973,13 @@ typedef struct dom0_vga_console_info {
#define xen_vga_console_info dom0_vga_console_info
#define xen_vga_console_info_t dom0_vga_console_info_t
+/*
+ * The domain handle is chosen by the toolstack, and intended to hold a UUID
+ * conforming to RFC 9562 (i.e. big endian).
+ *
+ * Certain cases (e.g. SMBios) transform it to a Microsoft GUID (little
+ * endian) for presentation to the guest.
+ */
typedef uint8_t xen_domain_handle_t[16];
__DEFINE_XEN_GUEST_HANDLE(uint8, uint8_t);
