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From: "Clément Léger" <cleger@rivosinc.com>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Anup Patel <anup@brainfault.org>,
	Atish Patra <atishp@atishpatra.org>,
	Shuah Khan <shuah@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, kvm@vger.kernel.org,
	kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org
Cc: "Clément Léger" <cleger@rivosinc.com>,
	"Samuel Holland" <samuel.holland@sifive.com>
Subject: [PATCH v2 09/15] riscv: misaligned: use get_user() instead of __get_user()
Date: Mon, 10 Feb 2025 22:35:42 +0100	[thread overview]
Message-ID: <20250210213549.1867704-10-cleger@rivosinc.com> (raw)
In-Reply-To: <20250210213549.1867704-1-cleger@rivosinc.com>

Now that we can safely handle user memory accesses while in the
misaligned access handlers, use get_user() instead of __get_user() to
have user memory access checks.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
 arch/riscv/kernel/traps_misaligned.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 1d523cf96ff0..e6685db58bd1 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -269,7 +269,7 @@ static unsigned long get_f32_rs(unsigned long insn, u8 fp_reg_offset,
 	int __ret;					\
 							\
 	if (user_mode(regs)) {				\
-		__ret = __get_user(insn, (type __user *) insn_addr); \
+		__ret = get_user(insn, (type __user *) insn_addr); \
 	} else {					\
 		insn = *(type *)insn_addr;		\
 		__ret = 0;				\
-- 
2.47.2


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  parent reply	other threads:[~2025-02-11  0:10 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-10 21:35 [PATCH v2 00/15] riscv: add SBI FWFT misaligned exception delegation support Clément Léger
2025-02-10 21:35 ` [PATCH v2 01/15] riscv: add Firmware Feature (FWFT) SBI extensions definitions Clément Léger
2025-02-11  4:06   ` Deepak Gupta
2025-02-11  4:31     ` Samuel Holland
2025-02-10 21:35 ` [PATCH v2 02/15] riscv: misaligned: request misaligned exception from SBI Clément Léger
2025-02-10 21:35 ` [PATCH v2 03/15] riscv: misaligned: use on_each_cpu() for scalar misaligned access probing Clément Léger
2025-02-10 21:35 ` [PATCH v2 04/15] riscv: misaligned: use correct CONFIG_ ifdef for misaligned_access_speed Clément Léger
2025-02-10 21:35 ` [PATCH v2 05/15] riscv: misaligned: move emulated access uniformity check in a function Clément Léger
2025-02-10 21:35 ` [PATCH v2 06/15] riscv: misaligned: add a function to check misalign trap delegability Clément Léger
2025-02-10 21:35 ` [PATCH v2 07/15] riscv: misaligned: factorize trap handling Clément Léger
2025-02-10 21:35 ` [PATCH v2 08/15] riscv: misaligned: enable IRQs while handling misaligned accesses Clément Léger
2025-02-10 21:35 ` Clément Léger [this message]
2025-02-10 21:35 ` [PATCH v2 10/15] Documentation/sysctl: add riscv to unaligned-trap supported archs Clément Léger
2025-02-10 21:35 ` [PATCH v2 11/15] selftests: riscv: add misaligned access testing Clément Léger
2025-02-10 21:35 ` [PATCH v2 12/15] RISC-V: KVM: add SBI extension init()/deinit() functions Clément Léger
2025-02-10 21:35 ` [PATCH v2 13/15] RISC-V: KVM: add SBI extension reset callback Clément Léger
2025-02-10 21:35 ` [PATCH v2 14/15] RISC-V: KVM: add support for FWFT SBI extension Clément Léger
2025-02-11  5:43   ` Deepak Gupta
2025-02-11 10:31     ` Clément Léger
2025-02-11 16:08       ` Deepak Gupta
2025-02-11  5:57   ` Deepak Gupta
2025-02-14 13:55     ` Clément Léger
2025-02-10 21:35 ` [PATCH v2 15/15] RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG Clément Léger
2025-02-11  6:05   ` Deepak Gupta

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