Dirtying the CC allows us to find missing CC changes. Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> --- lib/s390x/asm/uv.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/s390x/asm/uv.h b/lib/s390x/asm/uv.h index e9fb19af..85f7b060 100644 --- a/lib/s390x/asm/uv.h +++ b/lib/s390x/asm/uv.h @@ -9,6 +9,8 @@ * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2. */ +#include <asm/arch_def.h> + #ifndef _ASMS390X_UV_H_ #define _ASMS390X_UV_H_ @@ -216,14 +218,16 @@ struct uv_cb_ssc { static inline int uv_call_once(unsigned long r1, unsigned long r2) { + uint64_t spm_cc = 1 << SPM_CC_SHIFT; int cc; asm volatile( + " spm %[spm_cc]\n" "0: .insn rrf,0xB9A40000,%[r1],%[r2],0,0\n" " ipm %[cc]\n" " srl %[cc],28\n" : [cc] "=d" (cc) - : [r1] "a" (r1), [r2] "a" (r2) + : [r1] "a" (r1), [r2] "a" (r2), [spm_cc] "d" (spm_cc) : "memory", "cc"); if (UVC_ERR_DEBUG && cc == 1) -- 2.40.1