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Message-ID: <1446507046-24604-8-git-send-email-ynorov@caviumnetworks.com>
Date: Tue, 3 Nov 2015 02:30:36 +0300
From: Yury Norov <ynorov@...iumnetworks.com>
To: <catalin.marinas@....com>, <arnd@...db.de>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
CC: <pinskia@...il.com>, <ddaney.cavm@...il.com>,
<jan.dakinevich@...il.com>, <Prasun.Kapoor@...iumnetworks.com>,
<christoph.muellner@...obroma-systems.com>,
<philipp.tomsich@...obroma-systems.com>, <broonie@...nel.org>,
<andrey.konovalov@...aro.org>, <Nathan_Lynch@...tor.com>,
<agraf@...e.de>, <bamvor.zhangjian@...wei.com>,
<klimov.linux@...il.com>, Andrew Pinski <apinski@...ium.com>,
Yury Norov <ynorov@...iumnetworks.com>,
Andrew Pinski <Andrew.Pinski@...iumnetworks.com>
Subject: [PATCH v6 07/17] arm64:ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64
From: Andrew Pinski <apinski@...ium.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@...obroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@...obroma-systems.com>
Signed-off-by: Yury Norov <ynorov@...iumnetworks.com>
Signed-off-by: Andrew Pinski <Andrew.Pinski@...iumnetworks.com>
Reviewed-by: David Daney <david.daney@...ium.com>
---
arch/arm64/include/asm/compat.h | 38 +++++++++++++++++++++++++++++++++++-
arch/arm64/include/asm/thread_info.h | 1 +
2 files changed, 38 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 9700e5e..95d2d72 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -324,9 +324,35 @@ static inline int is_a32_compat_thread(struct thread_info *thread)
}
#endif
+#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
+
static inline int is_compat_task(void)
{
- return is_a32_compat_task();
+ return is_a32_compat_task() || is_ilp32_compat_task();
}
#else /* !CONFIG_COMPAT */
@@ -341,6 +367,16 @@ static inline int is_a32_compat_task(void)
return 0;
}
+static inline int is_ilp32_compat_thread(struct thread_info *thread)
+{
+ return 0;
+}
+
+static inline int is_ilp32_compat_task(void)
+{
+ return 0;
+}
+
#endif /* CONFIG_COMPAT */
#endif /* __KERNEL__ */
#endif /* __ASM_COMPAT_H */
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)
--
2.1.4
--
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