[Xen-devel] [PATCH v2 3/6] x86/viridian: get rid of the magic numbers in CPUID leaves 1 and 2

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

The numbers correspond to ASCII characters so just use appropriate
character strings directly.

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

v2:
 - Use memcpy() rather than cast-and-assign
---
 xen/arch/x86/hvm/viridian.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/hvm/viridian.c b/xen/arch/x86/hvm/viridian.c
index 0d208c3..27ad5e8 100644
--- a/xen/arch/x86/hvm/viridian.c
+++ b/xen/arch/x86/hvm/viridian.c
@@ -134,14 +134,16 @@ void cpuid_viridian_leaves(const struct vcpu *v, uint32_t 
leaf,
     switch ( leaf )
     {
     case 0:
+        /* See section 2.4.1 of the specification */
         res->a = 0x40000006; /* Maximum leaf */
-        res->b = 0x7263694d; /* Magic numbers  */
-        res->c = 0x666F736F;
-        res->d = 0x76482074;
+        memcpy(&res->b, "Micr", 4);
+        memcpy(&res->c, "osof", 4);
+        memcpy(&res->d, "t Hv", 4);
         break;
 
     case 1:
-        res->a = 0x31237648; /* Version number */
+        /* See section 2.4.2 of the specification */
+        memcpy(&res->a, "Hv#1", 4);
         break;
 
     case 2:
-- 
2.1.4


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel