linux-kernel - [PATCH v2 2/2] riscv: signal: fix signal

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Message-Id: <20241220083926.19453-3-yongxuan.wang@sifive.com>
Date: Fri, 20 Dec 2024 16:39:24 +0800
From: Yong-Xuan Wang <yongxuan.wang@...ive.com>
To: linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Cc: greentime.hu@...ive.com,
	vincent.chen@...ive.com,
	AndybnAC@...il.com,
	andybnac@...il.com,
	zong.li@...ive.com,
	Yong-Xuan Wang <yongxuan.wang@...ive.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Haibo Xu <haibo1.xu@...el.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Usama Arif <usamaarif642@...il.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Alexandre Ghiti <alexghiti@...osinc.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Björn Töpel <bjorn@...osinc.com>
Subject: [PATCH v2 2/2] riscv: signal: fix signal_minsigstksz

The init_rt_signal_env() funciton is called before the alternative patch
is applied, so using the alternative-related API to check the availability
of an extension within this function doesn't have the intended effect.
This patch reorders the init_rt_signal_env() and apply_boot_alternatives()
to get the correct signal_minsigstksz.

Fixes: e92f469b0771 ("riscv: signal: Report signal frame size to userspace via auxv")
Signed-off-by: Yong-Xuan Wang <yongxuan.wang@...ive.com>
Reviewed-by: Zong Li <zong.li@...ive.com>
---
 arch/riscv/kernel/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 016b48fcd6f2..b7c91f546453 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -324,8 +324,8 @@ void __init setup_arch(char **cmdline_p)
 
 	riscv_init_cbo_blocksizes();
 	riscv_fill_hwcap();
-	init_rt_signal_env();
 	apply_boot_alternatives();
+	init_rt_signal_env();
 
 	if (IS_ENABLED(CONFIG_RISCV_ISA_ZICBOM) &&
 	    riscv_isa_extension_available(NULL, ZICBOM))
-- 
2.17.1