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From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
	anup@brainfault.org, gregkh@linuxfoundation.org,
	liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
	wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org
Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-csky@vger.kernel.org, linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	inux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, x86@kernel.org,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V3 15/17] riscv: compat: Add UXL_32 support in start_thread
Date: Thu, 20 Jan 2022 15:39:08 +0800	[thread overview]
Message-ID: <20220120073911.99857-16-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

If the current task is in COMPAT mode, set SR_UXL_32 in status for
returning userspace.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---
 arch/riscv/kernel/process.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 03ac3aa611f5..1a666ad299b4 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc,
 	}
 	regs->epc = pc;
 	regs->sp = sp;
+
+#ifdef CONFIG_COMPAT
+	if (is_compat_task())
+		regs->status |= SR_UXL_32;
+#endif
 }
 
 void flush_thread(void)
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
	anup@brainfault.org, gregkh@linuxfoundation.org,
	liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
	wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org
Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-csky@vger.kernel.org, linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	inux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, x86@kernel.org,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V3 15/17] riscv: compat: Add UXL_32 support in start_thread
Date: Thu, 20 Jan 2022 15:39:08 +0800	[thread overview]
Message-ID: <20220120073911.99857-16-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

If the current task is in COMPAT mode, set SR_UXL_32 in status for
returning userspace.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---
 arch/riscv/kernel/process.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 03ac3aa611f5..1a666ad299b4 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc,
 	}
 	regs->epc = pc;
 	regs->sp = sp;
+
+#ifdef CONFIG_COMPAT
+	if (is_compat_task())
+		regs->status |= SR_UXL_32;
+#endif
 }
 
 void flush_thread(void)
-- 
2.25.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
	anup@brainfault.org, gregkh@linuxfoundation.org,
	liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
	wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org
Cc: linux-s390@vger.kernel.org, Guo Ren <guoren@linux.alibaba.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	linux-csky@vger.kernel.org, linux-mips@vger.kernel.org,
	sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org, inux-parisc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH V3 15/17] riscv: compat: Add UXL_32 support in start_thread
Date: Thu, 20 Jan 2022 15:39:08 +0800	[thread overview]
Message-ID: <20220120073911.99857-16-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

If the current task is in COMPAT mode, set SR_UXL_32 in status for
returning userspace.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---
 arch/riscv/kernel/process.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 03ac3aa611f5..1a666ad299b4 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc,
 	}
 	regs->epc = pc;
 	regs->sp = sp;
+
+#ifdef CONFIG_COMPAT
+	if (is_compat_task())
+		regs->status |= SR_UXL_32;
+#endif
 }
 
 void flush_thread(void)
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de,
	anup@brainfault.org, gregkh@linuxfoundation.org,
	liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org,
	wangjunqiang@iscas.ac.cn, hch@lst.de, hch@infradead.org
Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-csky@vger.kernel.org, linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	inux-parisc@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, x86@kernel.org,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V3 15/17] riscv: compat: Add UXL_32 support in start_thread
Date: Thu, 20 Jan 2022 15:39:08 +0800	[thread overview]
Message-ID: <20220120073911.99857-16-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

If the current task is in COMPAT mode, set SR_UXL_32 in status for
returning userspace.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
---
 arch/riscv/kernel/process.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 03ac3aa611f5..1a666ad299b4 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc,
 	}
 	regs->epc = pc;
 	regs->sp = sp;
+
+#ifdef CONFIG_COMPAT
+	if (is_compat_task())
+		regs->status |= SR_UXL_32;
+#endif
 }
 
 void flush_thread(void)
-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2022-01-20  7:41 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-20  7:39 guoren [this message]
2022-01-20  7:39 ` [PATCH V3 15/17] riscv: compat: Add UXL_32 support in start_thread guoren
2022-01-20  7:39 ` guoren
2022-01-20  7:39 ` guoren
2022-01-20  9:39 ` Arnd Bergmann
2022-01-20  9:39   ` Arnd Bergmann
2022-01-20  9:39   ` Arnd Bergmann
2022-01-20  9:39   ` Arnd Bergmann
2022-01-20 13:43   ` Guo Ren
2022-01-20 13:43     ` Guo Ren
2022-01-20 13:43     ` Guo Ren
2022-01-20 13:43     ` Guo Ren

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