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Commit 4f7e90d6 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

[S390] clear_table inline assembly contraints 



Tell the compile that the clear_table inline assembly writes to the
memory referenced by *s.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent c185b783

arch/s390/include/asm/pgalloc.h

+4 −1
Original line number Diff line number Diff line
@@ -28,6 +28,8 @@ void disable_noexec(struct mm_struct *, struct task_struct *); 


static inline void clear_table(unsigned long *s, unsigned long val, size_t n)

{

	typedef struct { char _[n]; } addrtype;



	*s = val;

	n = (n / 256) - 1;

	asm volatile(
@@ -39,7 +41,8 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n) 
		"0:	mvc	256(256,%0),0(%0)\n"

		"	la	%0,256(%0)\n"

		"	brct	%1,0b\n"

		: "+a" (s), "+d" (n));

		: "+a" (s), "+d" (n), "=m" (*(addrtype *) s)

		: "m" (*(addrtype *) s));

}



static inline void crst_table_init(unsigned long *crst, unsigned long entry)