x86/cpufeatures: Add new word for scattered features

Add a new word for scattered features because all free bits among the
existing Linux-defined auxiliary flags have been exhausted.

Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/8380d2a0da469a1f0ad75b8954a79fb689599ff6.1711091584.git.sandipan.das@amd.com

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index a1273698fc430b41951c241b6b76dfa9b7887692..42157ddcc09d436fef9684a813b3e9b9e666e9da 100644 (file)
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -91,8 +91,9 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
           CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 18, feature_bit) ||    \
           CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 19, feature_bit) ||    \
           CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 20, feature_bit) ||    \
+          CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 21, feature_bit) ||    \
           REQUIRED_MASK_CHECK                                    ||    \
-          BUILD_BUG_ON_ZERO(NCAPINTS != 21))
+          BUILD_BUG_ON_ZERO(NCAPINTS != 22))
 
 #define DISABLED_MASK_BIT_SET(feature_bit)                             \
         ( CHECK_BIT_IN_MASK_WORD(DISABLED_MASK,  0, feature_bit) ||    \
@@ -116,8 +117,9 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
           CHECK_BIT_IN_MASK_WORD(DISABLED_MASK, 18, feature_bit) ||    \
           CHECK_BIT_IN_MASK_WORD(DISABLED_MASK, 19, feature_bit) ||    \
           CHECK_BIT_IN_MASK_WORD(DISABLED_MASK, 20, feature_bit) ||    \
+          CHECK_BIT_IN_MASK_WORD(DISABLED_MASK, 21, feature_bit) ||    \
           DISABLED_MASK_CHECK                                    ||    \
-          BUILD_BUG_ON_ZERO(NCAPINTS != 21))
+          BUILD_BUG_ON_ZERO(NCAPINTS != 22))
 
 #define cpu_has(c, bit)                                                        \
        (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 :  \

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index f0337f7bcf16255c7531b69a6134aa30e295ae3a..4d850a780f7ed91092cba7845057a4c2c25400bb 100644 (file)
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -13,7 +13,7 @@
 /*
  * Defines x86 CPU feature bits
  */
-#define NCAPINTS                       21         /* N 32-bit words worth of info */
+#define NCAPINTS                       22         /* N 32-bit words worth of info */
 #define NBUGINTS                       2          /* N 32-bit bug flags */
 
 /*

diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h
index da4054fbf533e9d5884066b5fcbbd766822e3a1e..c492bdc97b0595ec77f89dc9b0cefe5e3e64be41 100644 (file)
--- a/arch/x86/include/asm/disabled-features.h
+++ b/arch/x86/include/asm/disabled-features.h
@@ -155,6 +155,7 @@
 #define DISABLED_MASK18        (DISABLE_IBT)
 #define DISABLED_MASK19        (DISABLE_SEV_SNP)
 #define DISABLED_MASK20        0
-#define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 21)
+#define DISABLED_MASK21        0
+#define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 22)
 
 #endif /* _ASM_X86_DISABLED_FEATURES_H */

diff --git a/arch/x86/include/asm/required-features.h b/arch/x86/include/asm/required-features.h
index 7ba1726b71c7b8bfc95888dc78508998bba263fe..e9187ddd3d1fdc61fff087b0ea3b8b9b0ff33ac3 100644 (file)
--- a/arch/x86/include/asm/required-features.h
+++ b/arch/x86/include/asm/required-features.h
@@ -99,6 +99,7 @@
 #define REQUIRED_MASK18        0
 #define REQUIRED_MASK19        0
 #define REQUIRED_MASK20        0
-#define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 21)
+#define REQUIRED_MASK21        0
+#define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 22)
 
 #endif /* _ASM_X86_REQUIRED_FEATURES_H */