1 files changed, 36 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0028-x86-cpufeatures-Add-X86_FEATURE_RDS.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0028-x86-cpufeatures-Add-X86_FEATURE_RDS.patch
new file mode 100644
index 00000000..19e234c1
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0028-x86-cpufeatures-Add-X86_FEATURE_RDS.patch
@@ -0,0 +1,36 @@
+From 516277f549be576a1146ab20f22ab17393a2c53c Mon Sep 17 00:00:00 2001
+From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
+Date: Sat, 28 Apr 2018 22:34:17 +0200
+Subject: [PATCH 28/93] x86/cpufeatures: Add X86_FEATURE_RDS
+
+commit 0cc5fa00b0a88dad140b4e5c2cead9951ad36822 upstream
+
+Add the CPU feature bit CPUID.7.0.EDX[31] which indicates whether the CPU
+supports Reduced Data Speculation.
+
+[ tglx: Split it out from a later patch ]
+
+Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Reviewed-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/x86/include/asm/cpufeatures.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
+index a688adb..0c05c6c 100644
+--- a/arch/x86/include/asm/cpufeatures.h
++++ b/arch/x86/include/asm/cpufeatures.h
+@@ -306,6 +306,7 @@
+ #define X86_FEATURE_SPEC_CTRL		(18*32+26) /* "" Speculation Control (IBRS + IBPB) */
+ #define X86_FEATURE_INTEL_STIBP		(18*32+27) /* "" Single Thread Indirect Branch Predictors */
+ #define X86_FEATURE_ARCH_CAPABILITIES	(18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */
++#define X86_FEATURE_RDS			(18*32+31) /* Reduced Data Speculation */
+ 
+ /*
+  * BUG word(s)
+-- 
+2.7.4
+