linux-kernel - Re: linux-next: Tree for Aug 23

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Date:	Tue, 2 Sep 2014 22:21:26 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: linux-next: Tree for Aug 23

On Tue, Sep 02, 2014 at 12:04:45PM -0700, Guenter Roeck wrote:

> I provided qemu images and instructions as follows.
> 	http://server.roeck-us.net/qemu/mipsel/		MIPS 32 bit, little endian
> 	http://server.roeck-us.net/qemu/mips64el/	MIPS 64 bit, little endian
> 
> Let me know if you also need big endian images.

Thanks! Does the below work? It appears to work for the mips64 build I did.
I'll send a proper patch tomorrow; sleep time :-)

---
diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig
index e18741e..869efe7 100644
--- a/arch/mips/configs/malta_defconfig
+++ b/arch/mips/configs/malta_defconfig
@@ -441,3 +441,6 @@ CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_CRC16=m
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_CPU_MIPS64_R1=y
+CONFIG_64BIT=y
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 476fe3b..f3ee721 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -93,7 +93,7 @@ static __inline__ int atomic_##op##_return(int i, atomic_t * v)			\
 		"	" #asm_op " %0, %1, %3				\n"	\
 		"	sc	%0, %2					\n"	\
 		"	beqzl	%0, 1b					\n"	\
-		"	addu	%0, %1, %3				\n"	\
+		"	" #asm_op " %0, %1, %3				\n"	\
 		"	.set	mips0					\n"	\
 		: "=&r" (result), "=&r" (temp), "+m" (v->counter)		\
 		: "Ir" (i));							\
@@ -111,7 +111,7 @@ static __inline__ int atomic_##op##_return(int i, atomic_t * v)			\
 			: "Ir" (i));						\
 		} while (unlikely(!result));					\
 										\
-		result = temp + i;						\
+		result = temp; result c_op i;					\
 	} else {								\
 		unsigned long flags;						\
 										\
@@ -387,7 +387,7 @@ static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)		\
 			: "memory");						\
 		} while (unlikely(!result));					\
 										\
-		result = temp + i;						\
+		result = temp; result c_op i;					\
 	} else {								\
 		unsigned long flags;						\
 										\

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