x86/cpufeature: Guard asm_volatile_goto usage for BPF compilation
Workaround for the sake of BPF compilation which utilizes kernel headers, but clang does not support ASM GOTO and fails the build. Fixes: d0266046 ("x86: Remove FAST_FEATURE_TESTS") Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: daniel@iogearbox.net Cc: peterz@infradead.org Cc: netdev@vger.kernel.org Cc: bp@alien8.de Cc: yhs@fb.com Cc: kernel-team@fb.com Cc: torvalds@linux-foundation.org Cc: davem@davemloft.net Link: https://lkml.kernel.org/r/20180513193222.1997938-1-ast@kernel.org
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