[xen staging] x86emul/test: use MSR constants

[patchbot@xxxxxxx]

commit 01ffbe8bcffdc5c6c98f0715bac95f3348b1c0cc
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Sep 6 12:48:42 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Sep 6 12:48:42 2024 +0200

    x86emul/test: use MSR constants
    
    msr-index.h has been in use for a while, so use the identifiers it
    provides in place of raw numbers plus comments.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 tools/tests/x86_emulator/test_x86_emulator.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/tests/x86_emulator/test_x86_emulator.c 
b/tools/tests/x86_emulator/test_x86_emulator.c
index 94a2bbab93..3a6054441a 100644
--- a/tools/tests/x86_emulator/test_x86_emulator.c
+++ b/tools/tests/x86_emulator/test_x86_emulator.c
@@ -689,11 +689,11 @@ static int read_msr(
 {
     switch ( reg )
     {
-    case 0xc0000080: /* EFER */
-        *val = ctxt->addr_size > 32 ? 0x500 /* LME|LMA */ : 0;
+    case MSR_EFER:
+        *val = ctxt->addr_size > 32 ? EFER_LME | EFER_LMA : 0;
         return X86EMUL_OKAY;
 
-    case 0xc0000103: /* TSC_AUX */
+    case MSR_TSC_AUX:
 #define TSC_AUX_VALUE 0xCACACACA
         *val = TSC_AUX_VALUE;
         return X86EMUL_OKAY;
--
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