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[v2,02/30] xen/x86: Do not store VIA/Cyrix/Centaur CPU features

Message ID 1454679743-18133-3-git-send-email-andrew.cooper3@citrix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andrew Cooper Feb. 5, 2016, 1:41 p.m. UTC 
Nothing uses them.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Jan Beulich <JBeulich@suse.com>

New in v2
---
 xen/arch/x86/cpu/centaur.c       |  3 ---
 xen/include/asm-x86/cpufeature.h | 12 +-----------
 2 files changed, 1 insertion(+), 14 deletions(-)
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Patch

diff --git a/xen/arch/x86/cpu/centaur.c b/xen/arch/x86/cpu/centaur.c
index c0ac117..b137d55 100644
--- a/xen/arch/x86/cpu/centaur.c
+++ b/xen/arch/x86/cpu/centaur.c
@@ -38,9 +38,6 @@  static void init_c3(struct cpuinfo_x86 *c)
 			wrmsrl(MSR_VIA_RNG, msr_content | RNG_ENABLE);
 			printk(KERN_INFO "CPU: Enabled h/w RNG\n");
 		}
-
-		c->x86_capability[cpufeat_word(X86_FEATURE_XSTORE)]
-                    = cpuid_edx(0xC0000001);
 	}
 
 	if (c->x86 == 0x6 && c->x86_model >= 0xf) {
diff --git a/xen/include/asm-x86/cpufeature.h b/xen/include/asm-x86/cpufeature.h
index 6583039..e7e369b 100644
--- a/xen/include/asm-x86/cpufeature.h
+++ b/xen/include/asm-x86/cpufeature.h
@@ -109,17 +109,7 @@ 
 #define X86_FEATURE_RDRAND 	(4*32+30) /* Digital Random Number Generator */
 #define X86_FEATURE_HYPERVISOR	(4*32+31) /* Running under some hypervisor */
 
-/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
-#define X86_FEATURE_XSTORE	(5*32+ 2) /* on-CPU RNG present (xstore insn) */
-#define X86_FEATURE_XSTORE_EN	(5*32+ 3) /* on-CPU RNG enabled */
-#define X86_FEATURE_XCRYPT	(5*32+ 6) /* on-CPU crypto (xcrypt insn) */
-#define X86_FEATURE_XCRYPT_EN	(5*32+ 7) /* on-CPU crypto enabled */
-#define X86_FEATURE_ACE2	(5*32+ 8) /* Advanced Cryptography Engine v2 */
-#define X86_FEATURE_ACE2_EN	(5*32+ 9) /* ACE v2 enabled */
-#define X86_FEATURE_PHE		(5*32+ 10) /* PadLock Hash Engine */
-#define X86_FEATURE_PHE_EN	(5*32+ 11) /* PHE enabled */
-#define X86_FEATURE_PMM		(5*32+ 12) /* PadLock Montgomery Multiplier */
-#define X86_FEATURE_PMM_EN	(5*32+ 13) /* PMM enabled */
+/* UNUSED, word 5 */
 
 /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
 #define X86_FEATURE_LAHF_LM     (6*32+ 0) /* LAHF/SAHF in long mode */