[PATCH v11 09/37] x86/fred: Disable FRED support if CONFIG_X86_FRED is disabled

[Xin Li <xin3.li@xxxxxxxxx>]

From: "H. Peter Anvin (Intel)" <hpa@xxxxxxxxx>

Add CONFIG_X86_FRED to <asm/disabled-features.h> to make
cpu_feature_enabled() work correctly with FRED.

Originally-by: Megha Dey <megha.dey@xxxxxxxxx>
Signed-off-by: H. Peter Anvin (Intel) <hpa@xxxxxxxxx>
Tested-by: Shan Kang <shan.kang@xxxxxxxxx>
Signed-off-by: Xin Li <xin3.li@xxxxxxxxx>
---

Changes since v10:
* FRED feature is defined in cpuid word 12, not 13 (Nikolay Borisov).
---
 arch/x86/include/asm/disabled-features.h       | 8 +++++++-
 tools/arch/x86/include/asm/disabled-features.h | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/disabled-features.h 
b/arch/x86/include/asm/disabled-features.h
index 702d93fdd10e..f40b29d3abad 100644
--- a/arch/x86/include/asm/disabled-features.h
+++ b/arch/x86/include/asm/disabled-features.h
@@ -117,6 +117,12 @@
 #define DISABLE_IBT    (1 << (X86_FEATURE_IBT & 31))
 #endif
 
+#ifdef CONFIG_X86_FRED
+# define DISABLE_FRED  0
+#else
+# define DISABLE_FRED  (1 << (X86_FEATURE_FRED & 31))
+#endif
+
 /*
  * Make sure to add features to the correct mask
  */
@@ -133,7 +139,7 @@
 #define DISABLED_MASK10        0
 #define DISABLED_MASK11        
(DISABLE_RETPOLINE|DISABLE_RETHUNK|DISABLE_UNRET| \
                         DISABLE_CALL_DEPTH_TRACKING|DISABLE_USER_SHSTK)
-#define DISABLED_MASK12        (DISABLE_LAM)
+#define DISABLED_MASK12        (DISABLE_FRED|DISABLE_LAM)
 #define DISABLED_MASK13        0
 #define DISABLED_MASK14        0
 #define DISABLED_MASK15        0
diff --git a/tools/arch/x86/include/asm/disabled-features.h 
b/tools/arch/x86/include/asm/disabled-features.h
index fafe9be7a6f4..0b47ab1930a3 100644
--- a/tools/arch/x86/include/asm/disabled-features.h
+++ b/tools/arch/x86/include/asm/disabled-features.h
@@ -105,6 +105,12 @@
 # define DISABLE_TDX_GUEST     (1 << (X86_FEATURE_TDX_GUEST & 31))
 #endif
 
+#ifdef CONFIG_X86_FRED
+# define DISABLE_FRED  0
+#else
+# define DISABLE_FRED  (1 << (X86_FEATURE_FRED & 31))
+#endif
+
 /*
  * Make sure to add features to the correct mask
  */
@@ -121,7 +127,7 @@
 #define DISABLED_MASK10        0
 #define DISABLED_MASK11        
(DISABLE_RETPOLINE|DISABLE_RETHUNK|DISABLE_UNRET| \
                         DISABLE_CALL_DEPTH_TRACKING)
-#define DISABLED_MASK12        (DISABLE_LAM)
+#define DISABLED_MASK12        (DISABLE_FRED|DISABLE_LAM)
 #define DISABLED_MASK13        0
 #define DISABLED_MASK14        0
 #define DISABLED_MASK15        0
-- 
2.34.1