Thread (63 messages) 63 messages, 10 authors, 2025-03-27

Re: [RFC PATCH V3 25/43] rv64ilp32_abi: exec: Adapt 64lp64 env and argv

From: Sergey Shtylyov <hidden>
Date: 2025-03-25 17:19:47
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On 3/25/25 3:16 PM, guoren@kernel.org wrote:
quoted hunk ↗ jump to hunk
From: "Guo Ren (Alibaba DAMO Academy)" <guoren@kernel.org>

The rv64ilp32 abi reuses the env and argv memory layout of the
lp64 abi, so leave the space to fit the lp64 struct layout.

Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org>
---
 fs/exec.c | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/fs/exec.c b/fs/exec.c
index 506cd411f4ac..548d18b7ae92 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -424,6 +424,10 @@ static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
 	}
 #endif
 
+#if defined(CONFIG_64BIT) && (BITS_PER_LONG == 32)
   Parens don't seem necessary...
+	nr = nr * 2;
   Why not nr *= 2?

[...]

MBR, Sergey
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