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Commit a6813fe5 authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
Browse files

MIPS: futex: Add EVA support for futex operations 



Use LLE/SCE instructions for performing an address translation for
userspace when EVA is enabled.

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent 93244945

arch/mips/include/asm/futex.h

+5 −4
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 


#include <linux/futex.h>

#include <linux/uaccess.h>

#include <asm/asm-eva.h>

#include <asm/barrier.h>

#include <asm/errno.h>

#include <asm/war.h>
@@ -49,11 +50,11 @@ 
		"	.set	push				\n"	\

		"	.set	noat				\n"	\

		"	.set	mips3				\n"	\

		"1:	ll	%1, %4	# __futex_atomic_op	\n"	\

		"1:	"user_ll("%1", "%4")" # __futex_atomic_op\n"	\

		"	.set	mips0				\n"	\

		"	" insn	"				\n"	\

		"	.set	mips3				\n"	\

		"2:	sc	$1, %2				\n"	\

		"2:	"user_sc("$1", "%2")"			\n"	\

		"	beqz	$1, 1b				\n"	\

		__WEAK_LLSC_MB						\

		"3:						\n"	\
@@ -174,12 +175,12 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, 
		"	.set	push					\n"

		"	.set	noat					\n"

		"	.set	mips3					\n"

		"1:	ll	%1, %3					\n"

		"1:	"user_ll("%1", "%3")"				\n"

		"	bne	%1, %z4, 3f				\n"

		"	.set	mips0					\n"

		"	move	$1, %z5					\n"

		"	.set	mips3					\n"

		"2:	sc	$1, %2					\n"

		"2:	"user_sc("$1", "%2")"				\n"

		"	beqz	$1, 1b					\n"

		__WEAK_LLSC_MB

		"3:							\n"