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authorPaolo Bonzini <>2016-03-31 09:38:51 +0200
committerOleksandr Suvorov <>2019-05-06 12:18:16 +0300
commit9c67aaa0ab753d991374eda112eedcaa065ba7c5 (patch)
parent14fae82d8ad3414b89fa46553b7f0e39dca93c12 (diff)
compiler-gcc: disable -ftracer for __noclone functionstoradex_imx_3.10.17_1.0.0_ga-next
commit 95272c29378ee7dc15f43fa2758cb28a5913a06d upstream. -ftracer can duplicate asm blocks causing compilation to fail in noclone functions. For example, KVM declares a global variable in an asm like asm("2: ... \n .pushsection data \n .global vmx_return \n vmx_return: .long 2b"); and -ftracer causes a double declaration. Cc: Andrew Morton <> Cc: Michal Marek <> Cc: Cc: Reported-by: Linda Walsh <> Signed-off-by: Paolo Bonzini <> Signed-off-by: Willy Tarreau <> (cherry picked from commit 5d814ad8d35e5e23e0c27fb0f0b80c1044ecefad)
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 36402e27b016..abbac368aa1c 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -174,7 +174,7 @@
#define unreachable() __builtin_unreachable()
/* Mark a function definition as prohibited from being cloned. */
-#define __noclone __attribute__((__noclone__))
+#define __noclone __attribute__((__noclone__, __optimize__("no-tracer")))
#endif /* GCC_VERSION >= 40500 */