Re: [PATCH 2/6] arch/sparc: Define config parameter CPU_BIG_ENDIAN
On 5/18/2017 9:26 PM, David Miller wrote: From: Babu Moger Date: Thu, 18 May 2017 18:36:06 -0600 @@ -91,6 +91,10 @@ config ARCH_DEFCONFIG config ARCH_PROC_KCORE_TEXT def_bool y +config CPU_BIG_ENDIAN + bool + default y if SPARC64 + 32-bit sparc is big-endian too :-) So please don't use SPARC64 for the setting, use plain SPARC instead. Ok. Sure. Will do.
Re: [PATCH 2/6] arch/sparc: Define config parameter CPU_BIG_ENDIAN
From: Babu Moger Date: Thu, 18 May 2017 18:36:06 -0600 > @@ -91,6 +91,10 @@ config ARCH_DEFCONFIG > config ARCH_PROC_KCORE_TEXT > def_bool y > > +config CPU_BIG_ENDIAN > + bool > + default y if SPARC64 > + 32-bit sparc is big-endian too :-) So please don't use SPARC64 for the setting, use plain SPARC instead.
[PATCH 2/6] arch/sparc: Define config parameter CPU_BIG_ENDIAN
Found this problem while enabling queued rwlock on SPARC. The parameter CONFIG_CPU_BIG_ENDIAN is used to clear the specific byte in qrwlock structure. Without this parameter, we clear the wrong byte. Here is the code. static inline u8 *__qrwlock_write_byte(struct qrwlock *lock) { return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN); } Define CPU_BIG_ENDIAN for SPARC to fix it. Signed-off-by: Babu Moger Reviewed-by: HÃ¥kon Bugge Reviewed-by: Jane Chu Reviewed-by: Shannon Nelson Reviewed-by: Vijay Kumar --- arch/sparc/Kconfig |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index a2ad946..8787fc4 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -91,6 +91,10 @@ config ARCH_DEFCONFIG config ARCH_PROC_KCORE_TEXT def_bool y +config CPU_BIG_ENDIAN + bool + default y if SPARC64 + config ARCH_ATU bool default y if SPARC64 -- 1.7.1