From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
(cherry picked from commit ea00f301285ea2f07393678cd2b6057878320c9d)
Joe Konno reported a compile failure resulting from using an MSR
without inclusion of <asm/msr-index.h>, and while the current code builds
fine (by accident) this needs fixing for future patches.
Reported-by: Joe Konno <joe.konno@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: arjan@xxxxxxxxxxxxxxx
Cc: bp@xxxxxxxxx
Cc: dan.j.williams@xxxxxxxxx
Cc: dave.hansen@xxxxxxxxxxxxxxx
Cc: dwmw2@xxxxxxxxxxxxx
Cc: dwmw@xxxxxxxxxxxx
Cc: gregkh@xxxxxxxxxxxxxxxxxxx
Cc: hpa@xxxxxxxxx
Cc: jpoimboe@xxxxxxxxxx
Cc: linux-tip-commits@xxxxxxxxxxxxxxx
Cc: luto@xxxxxxxxxx
Fixes: 20ffa1caecca ("x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support")
Link: http://lkml.kernel.org/r/20180213132819.GJ25201@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Youquan Song <youquan.song@xxxxxxxxxxxxxxx> [v4.4 backport]
---
arch/x86/include/asm/nospec-branch.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index 9a00eaa..5de59b4 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -6,6 +6,7 @@
#include <asm/alternative.h>
#include <asm/alternative-asm.h>
#include <asm/cpufeature.h>
+#include <asm/msr-index.h>
/*
* Fill the CPU return stack buffer.
--
1.8.3.1