| Message ID | 20210914161712.2463458-1-ndesaulniers@google.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | powerpc: clean up UPD_CONSTR | expand |
On 9/14/2021 9:17 AM, Nick Desaulniers wrote: > 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 <nathan@kernel.org> > Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> > Suggested-by: Michael Ellerman <mpe@ellerman.id.au> > Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> > --- > 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 dbfa5e1e3198..bfb3c3534877 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 6a53ef178bfd..fd594fdbd84d 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 f130783c8301..beba4979bff9 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 22c79ab40006..63316100080c 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 b4e6f70b97b9..3fd037d36afb 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; >
On Tue, 14 Sep 2021 09:17:04 -0700, Nick Desaulniers wrote: > UPD_CONSTR was previously a preprocessor define for an old GCC 4.9 inline > asm bug with m<> constraints. > > > > Applied to powerpc/next. [1/1] powerpc: clean up UPD_CONSTR https://git.kernel.org/powerpc/c/2a24d80fc86bcd70c8e780078254e873ea217379 cheers
diff --git a/arch/powerpc/include/asm/asm-const.h b/arch/powerpc/include/asm/asm-const.h index dbfa5e1e3198..bfb3c3534877 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 6a53ef178bfd..fd594fdbd84d 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 f130783c8301..beba4979bff9 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 22c79ab40006..63316100080c 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 b4e6f70b97b9..3fd037d36afb 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;
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 <nathan@kernel.org> Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Nick Desaulniers <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(-)