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From: guoren@kernel.org
To: linux-kernel@vger.kernel.org, paul.walmsley@sifive.com,
	palmer@dabbelt.com, alexghiti@rivosinc.com, charlie@rivosinc.com,
	xiao.w.wang@intel.com, guoren@kernel.org, david@redhat.com,
	panqinglin2020@iscas.ac.cn, rick.p.edgecombe@intel.com,
	willy@infradead.org, bjorn@rivosinc.com,
	conor.dooley@microchip.com, cleger@rivosinc.com,
	leobras@redhat.com
Cc: linux-riscv@lists.infradead.org,
	Guo Ren <guoren@linux.alibaba.com>,
	stable@vger.kernel.org
Subject: [PATCH V3 2/4] riscv: mm: Fixup compat arch_get_mmap_end
Date: Fri, 22 Dec 2023 06:57:01 -0500	[thread overview]
Message-ID: <20231222115703.2404036-3-guoren@kernel.org> (raw)
In-Reply-To: <20231222115703.2404036-1-guoren@kernel.org>

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

When the task is in COMPAT mode, the arch_get_mmap_end should be 2GB,
not TASK_SIZE_64. The TASK_SIZE has contained is_compat_mode()
detection, so change the definition of STACK_TOP_MAX to TASK_SIZE
directly.

Cc: stable@vger.kernel.org
Fixes: add2cc6b6515 ("RISC-V: mm: Restrict address space for sv39,sv48,sv57")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
 arch/riscv/include/asm/processor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h
index f19f861cda54..e1944ff0757a 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -16,7 +16,7 @@
 
 #ifdef CONFIG_64BIT
 #define DEFAULT_MAP_WINDOW	(UL(1) << (MMAP_VA_BITS - 1))
-#define STACK_TOP_MAX		TASK_SIZE_64
+#define STACK_TOP_MAX		TASK_SIZE
 
 #define arch_get_mmap_end(addr, len, flags)			\
 ({								\
-- 
2.40.1


WARNING: multiple messages have this Message-ID (diff)
From: guoren@kernel.org
To: linux-kernel@vger.kernel.org, paul.walmsley@sifive.com,
	palmer@dabbelt.com, alexghiti@rivosinc.com, charlie@rivosinc.com,
	xiao.w.wang@intel.com, guoren@kernel.org, david@redhat.com,
	panqinglin2020@iscas.ac.cn, rick.p.edgecombe@intel.com,
	willy@infradead.org, bjorn@rivosinc.com,
	conor.dooley@microchip.com, cleger@rivosinc.com,
	leobras@redhat.com
Cc: linux-riscv@lists.infradead.org,
	Guo Ren <guoren@linux.alibaba.com>,
	stable@vger.kernel.org
Subject: [PATCH V3 2/4] riscv: mm: Fixup compat arch_get_mmap_end
Date: Fri, 22 Dec 2023 06:57:01 -0500	[thread overview]
Message-ID: <20231222115703.2404036-3-guoren@kernel.org> (raw)
In-Reply-To: <20231222115703.2404036-1-guoren@kernel.org>

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

When the task is in COMPAT mode, the arch_get_mmap_end should be 2GB,
not TASK_SIZE_64. The TASK_SIZE has contained is_compat_mode()
detection, so change the definition of STACK_TOP_MAX to TASK_SIZE
directly.

Cc: stable@vger.kernel.org
Fixes: add2cc6b6515 ("RISC-V: mm: Restrict address space for sv39,sv48,sv57")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
 arch/riscv/include/asm/processor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h
index f19f861cda54..e1944ff0757a 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -16,7 +16,7 @@
 
 #ifdef CONFIG_64BIT
 #define DEFAULT_MAP_WINDOW	(UL(1) << (MMAP_VA_BITS - 1))
-#define STACK_TOP_MAX		TASK_SIZE_64
+#define STACK_TOP_MAX		TASK_SIZE
 
 #define arch_get_mmap_end(addr, len, flags)			\
 ({								\
-- 
2.40.1


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  parent reply	other threads:[~2023-12-22 11:57 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-22 11:56 [PATCH V3 0/4] riscv: mm: Fixup & Optimize COMPAT code guoren
2023-12-22 11:56 ` guoren
2023-12-22 11:57 ` [PATCH V3 1/4] riscv: mm: Fixup compat mode boot failure guoren
2023-12-22 11:57   ` guoren
2023-12-23  2:57   ` Leonardo Bras
2023-12-23  2:57     ` Leonardo Bras
2023-12-23  3:07     ` Guo Ren
2023-12-23  3:07       ` Guo Ren
2023-12-23  3:36       ` Charlie Jenkins
2023-12-23  3:36         ` Charlie Jenkins
2023-12-22 11:57 ` guoren [this message]
2023-12-22 11:57   ` [PATCH V3 2/4] riscv: mm: Fixup compat arch_get_mmap_end guoren
2023-12-23  2:51   ` Leonardo Bras
2023-12-23  2:51     ` Leonardo Bras
2023-12-23  3:39     ` Charlie Jenkins
2023-12-23  3:39       ` Charlie Jenkins
2023-12-22 11:57 ` [PATCH V3 3/4] riscv: mm: Remove unused TASK_SIZE_MIN guoren
2023-12-22 11:57   ` guoren
2024-01-24 18:35   ` Charlie Jenkins
2024-01-24 18:35     ` Charlie Jenkins
2023-12-22 11:57 ` [PATCH V3 4/4] riscv: mm: Optimize TASK_SIZE definition guoren
2023-12-22 11:57   ` guoren
2024-01-24 18:36   ` Charlie Jenkins
2024-01-24 18:36     ` Charlie Jenkins
2024-01-12  6:30 ` [PATCH V3 0/4] riscv: mm: Fixup & Optimize COMPAT code patchwork-bot+linux-riscv
2024-01-12  6:30   ` patchwork-bot+linux-riscv

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