On Tue, Sep 02, 2014 at 10:21:26PM +0200, Peter Zijlstra wrote:
> 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 :-)
>
Yes, this fixes the problem for both mips32 and mips64.
Guenter
> ---
> 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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