From mboxrd@z Thu Jan 1 00:00:00 1970 From: ynorov@caviumnetworks.com (Yury Norov) Date: Wed, 16 Dec 2015 00:42:34 +0300 Subject: [PATCH v6 08/20] arm64: ilp32: add is_ilp32_compat_{task, thread} and TIF_32BIT_AARCH64 In-Reply-To: <1450215766-14765-1-git-send-email-ynorov@caviumnetworks.com> References: <1450215766-14765-1-git-send-email-ynorov@caviumnetworks.com> Message-ID: <1450215766-14765-9-git-send-email-ynorov@caviumnetworks.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Reviewed-by: David Daney Signed-off-by: Philipp Tomsich Signed-off-by: Christoph Muellner Signed-off-by: Yury Norov Signed-off-by: Andrew Pinski --- arch/arm64/include/asm/is_compat.h | 30 +++++++++++++++++++++++++++--- arch/arm64/include/asm/thread_info.h | 1 + 2 files changed, 28 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/is_compat.h b/arch/arm64/include/asm/is_compat.h index 476db90..89b1f65 100644 --- a/arch/arm64/include/asm/is_compat.h +++ b/arch/arm64/include/asm/is_compat.h @@ -36,7 +36,6 @@ static inline int is_a32_compat_thread(struct thread_info *thread) #else static inline int is_a32_compat_task(void) - { return 0; } @@ -45,14 +44,39 @@ static inline int is_a32_compat_thread(struct thread_info *thread) { return 0; } - #endif /* CONFIG_AARCH32_EL0 */ +#ifdef CONFIG_ARM64_ILP32 + +static inline int is_ilp32_compat_task(void) +{ + return test_thread_flag(TIF_32BIT_AARCH64); +} + +static inline int is_ilp32_compat_thread(struct thread_info *thread) +{ + return test_ti_thread_flag(thread, TIF_32BIT_AARCH64); +} + +#else + +static inline int is_ilp32_compat_task(void) +{ + return 0; +} + +static inline int is_ilp32_compat_thread(struct thread_info *thread) +{ + return 0; +} + +#endif /* CONFIG_ARM64_ILP32 */ + #ifdef CONFIG_COMPAT static inline int is_compat_task(void) { - return is_a32_compat_task(); + return is_a32_compat_task() || is_ilp32_compat_task(); } #endif /* CONFIG_COMPAT */ diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 7d03565..e72de74 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -112,6 +112,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SINGLESTEP 21 #define TIF_32BIT 22 /* AARCH32 process */ #define TIF_SWITCH_MM 23 /* deferred switch_mm */ +#define TIF_32BIT_AARCH64 24 /* 32 bit process on AArch64(ILP32) */ #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) -- 2.5.0