[Xen-devel] [PATCH 1/2] x86/cpu: Drop unused X86_VENDOR_* values

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Xen only has CPU drivers for Intel, Centaur and AMD.  All other contributions
to X86_VENDOR_NUM simply make the cpu_devs[] array longer, reducing the
efficiency of get_cpu_vendor()

There is one remaning hidden reference to X86_VENDOR_CYRIX in the MTRR code.
However, as far as I can tell, Cyrix never realeased a 64bit processor.  It is
therefore dead code.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
---
 xen/arch/x86/cpu/mtrr/main.c    |  2 +-
 xen/include/asm-x86/processor.h | 12 +++---------
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/xen/arch/x86/cpu/mtrr/main.c b/xen/arch/x86/cpu/mtrr/main.c
index e002975..47d44d7 100644
--- a/xen/arch/x86/cpu/mtrr/main.c
+++ b/xen/arch/x86/cpu/mtrr/main.c
@@ -94,7 +94,7 @@ static void __init set_num_var_ranges(void)
                rdmsrl(MSR_MTRRcap, config);
        } else if (is_cpu(AMD))
                config = 2;
-       else if (is_cpu(CYRIX) || is_cpu(CENTAUR))
+       else if (is_cpu(CENTAUR))
                config = 8;
        num_var_ranges = config & 0xff;
 }
diff --git a/xen/include/asm-x86/processor.h b/xen/include/asm-x86/processor.h
index 9870589..be31586 100644
--- a/xen/include/asm-x86/processor.h
+++ b/xen/include/asm-x86/processor.h
@@ -20,15 +20,9 @@
  * CPU vendor IDs
  */
 #define X86_VENDOR_INTEL 0
-#define X86_VENDOR_CYRIX 1
-#define X86_VENDOR_AMD 2
-#define X86_VENDOR_UMC 3
-#define X86_VENDOR_NEXGEN 4
-#define X86_VENDOR_CENTAUR 5
-#define X86_VENDOR_RISE 6
-#define X86_VENDOR_TRANSMETA 7
-#define X86_VENDOR_NSC 8
-#define X86_VENDOR_NUM 9
+#define X86_VENDOR_AMD 1
+#define X86_VENDOR_CENTAUR 2
+#define X86_VENDOR_NUM 3
 #define X86_VENDOR_UNKNOWN 0xff
 
 /*
-- 
2.1.4


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