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From: "Clément Léger" <cleger@rivosinc.com>
To: "Paul Walmsley" <paul.walmsley@sifive.com>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Stafford Horne" <shorne@gmail.com>,
	"Brian Cain" <bcain@quicinc.com>,
	"Kefeng Wang" <wangkefeng.wang@huawei.com>,
	"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Clément Léger" <cleger@rivosinc.com>,
	"Sunil V L" <sunilvl@ventanamicro.com>,
	"Anup Patel" <apatel@ventanamicro.com>,
	"Atish Patra" <atishp@rivosinc.com>,
	"Andrew Jones" <ajones@ventanamicro.com>,
	"Conor Dooley" <conor.dooley@microchip.com>,
	"Heiko Stuebner" <heiko@sntech.de>, "Guo Ren" <guoren@kernel.org>,
	"Alexandre Ghiti" <alexghiti@rivosinc.com>,
	"Masahiro Yamada" <masahiroy@kernel.org>,
	"Xianting Tian" <xianting.tian@linux.alibaba.com>,
	"Sia Jee Heng" <jeeheng.sia@starfivetech.com>,
	"Li Zhengyu" <lizhengyu3@huawei.com>,
	"Jisheng Zhang" <jszhang@kernel.org>,
	"Gautham R. Shenoy" <gautham.shenoy@amd.com>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Marc Zyngier" <maz@kernel.org>,
	"Björn Töpel" <bjorn@rivosinc.com>,
	"Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH 3/6] riscv: allow S-mode to handle misaligned traps
Date: Sat, 24 Jun 2023 14:20:46 +0200	[thread overview]
Message-ID: <20230624122049.7886-4-cleger@rivosinc.com> (raw)
In-Reply-To: <20230624122049.7886-1-cleger@rivosinc.com>

Now that we will be able to configure the SBI to let us handle the
traps, let this misalignment handling be available for S-mode.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
 arch/riscv/kernel/traps.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 8c258b78c925..b544cdd52dd2 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -149,12 +149,6 @@ DO_ERROR_INFO(do_trap_insn_illegal,
 	SIGILL, ILL_ILLOPC, "illegal instruction");
 DO_ERROR_INFO(do_trap_load_fault,
 	SIGSEGV, SEGV_ACCERR, "load access fault");
-#ifndef CONFIG_RISCV_M_MODE
-DO_ERROR_INFO(do_trap_load_misaligned,
-	SIGBUS, BUS_ADRALN, "Oops - load address misaligned");
-DO_ERROR_INFO(do_trap_store_misaligned,
-	SIGBUS, BUS_ADRALN, "Oops - store (or AMO) address misaligned");
-#else
 int handle_misaligned_load(struct pt_regs *regs);
 int handle_misaligned_store(struct pt_regs *regs);
 
@@ -199,7 +193,6 @@ asmlinkage __visible __trap_section void do_trap_store_misaligned(struct pt_regs
 		irqentry_nmi_exit(regs, state);
 	}
 }
-#endif
 DO_ERROR_INFO(do_trap_store_fault,
 	SIGSEGV, SEGV_ACCERR, "store (or AMO) access fault");
 DO_ERROR_INFO(do_trap_ecall_s,
-- 
2.40.1


  parent reply	other threads:[~2023-06-24 12:21 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-24 12:20 [RFC PATCH 0/6] Add support to handle misaligned accesses in S-mode Clément Léger
2023-06-24 12:20 ` [RFC PATCH 1/6] riscv: remove unused functions in traps_misaligned.c Clément Léger
2023-06-24 12:20 ` [RFC PATCH 2/6] riscv: add support for misaligned handling in S-mode Clément Léger
2023-06-24 12:20 ` Clément Léger [this message]
2023-06-24 12:20 ` [RFC PATCH 4/6] riscv: add support for SBI misalignment trap delegation Clément Léger
2023-06-24 12:20 ` [RFC PATCH 5/6] riscv: add support for PR_SET_UNALIGN and PR_GET_UNALIGN Clément Léger
2023-06-24 12:20 ` [RFC PATCH 6/6] riscv: add floating point insn support to misaligned access emulation Clément Léger

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