From 2a24d80fc86bcd70c8e780078254e873ea217379 Mon Sep 17 00:00:00 2001 From: Nick Desaulniers Date: Tue, 14 Sep 2021 09:17:04 -0700 Subject: [PATCH] powerpc/asm: Remove UPD_CONSTR after GCC 4.9 removal UPD_CONSTR was previously a preprocessor define for an old GCC 4.9 inline asm bug with m<> constraints. Fixes: 6563139d90ad ("powerpc: remove GCC version check for UPD_CONSTR") Suggested-by: Nathan Chancellor Suggested-by: Christophe Leroy Suggested-by: Michael Ellerman Signed-off-by: Nick Desaulniers Reviewed-by: Nathan Chancellor Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210914161712.2463458-1-ndesaulniers@google.com --- arch/powerpc/include/asm/asm-const.h | 2 -- arch/powerpc/include/asm/atomic.h | 8 ++++---- arch/powerpc/include/asm/io.h | 4 ++-- arch/powerpc/include/asm/uaccess.h | 6 +++--- arch/powerpc/kvm/powerpc.c | 4 ++-- 5 files changed, 11 insertions(+), 13 deletions(-) diff --git a/arch/powerpc/include/asm/asm-const.h b/arch/powerpc/include/asm/asm-const.h index dbfa5e1..bfb3c35 100644 --- a/arch/powerpc/include/asm/asm-const.h +++ b/arch/powerpc/include/asm/asm-const.h @@ -12,6 +12,4 @@ # define ASM_CONST(x) __ASM_CONST(x) #endif -#define UPD_CONSTR "<>" - #endif /* _ASM_POWERPC_ASM_CONST_H */ diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h index 6a53ef1..fd594fd 100644 --- a/arch/powerpc/include/asm/atomic.h +++ b/arch/powerpc/include/asm/atomic.h @@ -27,14 +27,14 @@ static __inline__ int arch_atomic_read(const atomic_t *v) { int t; - __asm__ __volatile__("lwz%U1%X1 %0,%1" : "=r"(t) : "m"UPD_CONSTR(v->counter)); + __asm__ __volatile__("lwz%U1%X1 %0,%1" : "=r"(t) : "m<>"(v->counter)); return t; } static __inline__ void arch_atomic_set(atomic_t *v, int i) { - __asm__ __volatile__("stw%U0%X0 %1,%0" : "=m"UPD_CONSTR(v->counter) : "r"(i)); + __asm__ __volatile__("stw%U0%X0 %1,%0" : "=m<>"(v->counter) : "r"(i)); } #define ATOMIC_OP(op, asm_op) \ @@ -320,14 +320,14 @@ static __inline__ s64 arch_atomic64_read(const atomic64_t *v) { s64 t; - __asm__ __volatile__("ld%U1%X1 %0,%1" : "=r"(t) : "m"UPD_CONSTR(v->counter)); + __asm__ __volatile__("ld%U1%X1 %0,%1" : "=r"(t) : "m<>"(v->counter)); return t; } static __inline__ void arch_atomic64_set(atomic64_t *v, s64 i) { - __asm__ __volatile__("std%U0%X0 %1,%0" : "=m"UPD_CONSTR(v->counter) : "r"(i)); + __asm__ __volatile__("std%U0%X0 %1,%0" : "=m<>"(v->counter) : "r"(i)); } #define ATOMIC64_OP(op, asm_op) \ diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index f130783..beba4979 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -122,7 +122,7 @@ static inline u##size name(const volatile u##size __iomem *addr) \ { \ u##size ret; \ __asm__ __volatile__("sync;"#insn"%U1%X1 %0,%1;twi 0,%0,0;isync"\ - : "=r" (ret) : "m"UPD_CONSTR (*addr) : "memory"); \ + : "=r" (ret) : "m<>" (*addr) : "memory"); \ return ret; \ } @@ -130,7 +130,7 @@ static inline u##size name(const volatile u##size __iomem *addr) \ static inline void name(volatile u##size __iomem *addr, u##size val) \ { \ __asm__ __volatile__("sync;"#insn"%U0%X0 %1,%0" \ - : "=m"UPD_CONSTR (*addr) : "r" (val) : "memory"); \ + : "=m<>" (*addr) : "r" (val) : "memory"); \ mmiowb_set_pending(); \ } diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 22c79ab..6331610 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -86,7 +86,7 @@ __pu_failed: \ "1: " op "%U1%X1 %0,%1 # put_user\n" \ EX_TABLE(1b, %l2) \ : \ - : "r" (x), "m"UPD_CONSTR (*addr) \ + : "r" (x), "m<>" (*addr) \ : \ : label) @@ -143,7 +143,7 @@ do { \ "1: "op"%U1%X1 %0, %1 # get_user\n" \ EX_TABLE(1b, %l2) \ : "=r" (x) \ - : "m"UPD_CONSTR (*addr) \ + : "m<>" (*addr) \ : \ : label) @@ -200,7 +200,7 @@ __gus_failed: \ ".previous\n" \ EX_TABLE(1b, 3b) \ : "=r" (err), "=r" (x) \ - : "m"UPD_CONSTR (*addr), "i" (-EFAULT), "0" (err)) + : "m<>" (*addr), "i" (-EFAULT), "0" (err)) #ifdef __powerpc64__ #define __get_user_asm2(x, addr, err) \ diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index b4e6f70..3fd037d 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -1094,7 +1094,7 @@ static inline u64 sp_to_dp(u32 fprs) preempt_disable(); enable_kernel_fp(); - asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m"UPD_CONSTR (fprd) : "m"UPD_CONSTR (fprs) + asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m<>" (fprd) : "m<>" (fprs) : "fr0"); preempt_enable(); return fprd; @@ -1106,7 +1106,7 @@ static inline u32 dp_to_sp(u64 fprd) preempt_disable(); enable_kernel_fp(); - asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m"UPD_CONSTR (fprs) : "m"UPD_CONSTR (fprd) + asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m<>" (fprs) : "m<>" (fprd) : "fr0"); preempt_enable(); return fprs; -- 2.7.4