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X-BeenThere: kvm-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kvm-riscv" Errors-To: kvm-riscv-bounces+kvm-riscv=archiver.kernel.org@lists.infradead.org 2025-06-20T17:17:20+08:00, Xu Lu : > Delegate illegal instruction fault to VS mode in default to avoid such > exceptions being trapped to HS and redirected back to VS. > > Signed-off-by: Xu Lu > --- > diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h > @@ -48,6 +48,7 @@ > + BIT(EXC_INST_ILLEGAL) | \ You should also remove the dead code in kvm_riscv_vcpu_exit. And why not delegate the others as well? (EXC_LOAD_MISALIGNED, EXC_STORE_MISALIGNED, EXC_LOAD_ACCESS, EXC_STORE_ACCESS, and EXC_INST_ACCESS.) 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Fri, 20 Jun 2025 05:04:29 -0700 (PDT) Received: from localhost ([2a02:8308:a00c:e200:81c5:fb37:d08e:99a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4535ead2a5fsm57299655e9.34.2025.06.20.05.04.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Jun 2025 05:04:28 -0700 (PDT) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 20 Jun 2025 14:04:28 +0200 Message-Id: Subject: Re: [PATCH] RISC-V: KVM: Delegate illegal instruction fault Cc: , , , , "linux-riscv" To: "Xu Lu" , , , , , , From: =?utf-8?q?Radim_Kr=C4=8Dm=C3=A1=C5=99?= References: <20250620091720.85633-1-luxu.kernel@bytedance.com> In-Reply-To: <20250620091720.85633-1-luxu.kernel@bytedance.com> 2025-06-20T17:17:20+08:00, Xu Lu : > Delegate illegal instruction fault to VS mode in default to avoid such > exceptions being trapped to HS and redirected back to VS. > > Signed-off-by: Xu Lu > --- > diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/k= vm_host.h > @@ -48,6 +48,7 @@ > + BIT(EXC_INST_ILLEGAL) | \ You should also remove the dead code in kvm_riscv_vcpu_exit. And why not delegate the others as well? (EXC_LOAD_MISALIGNED, EXC_STORE_MISALIGNED, EXC_LOAD_ACCESS, EXC_STORE_ACCESS, and EXC_INST_ACCESS.) Thanks. 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X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 2025-06-20T17:17:20+08:00, Xu Lu : > Delegate illegal instruction fault to VS mode in default to avoid such > exceptions being trapped to HS and redirected back to VS. > > Signed-off-by: Xu Lu > --- > diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h > @@ -48,6 +48,7 @@ > + BIT(EXC_INST_ILLEGAL) | \ You should also remove the dead code in kvm_riscv_vcpu_exit. And why not delegate the others as well? (EXC_LOAD_MISALIGNED, EXC_STORE_MISALIGNED, EXC_LOAD_ACCESS, EXC_STORE_ACCESS, and EXC_INST_ACCESS.) Thanks. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv