Message ID | 20230419221716.3603068-3-atishp@rivosinc.com (mailing list archive) |
---|---|
State | New |
Headers | show
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Wed, 19 Apr 2023 15:17:34 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id jn11-20020a170903050b00b00196807b5189sm11619190plb.292.2023.04.19.15.17.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 15:17:33 -0700 (PDT) From: Atish Patra <atishp@rivosinc.com> To: linux-kernel@vger.kernel.org Cc: Atish Patra <atishp@rivosinc.com>, Alexandre Ghiti <alex@ghiti.fr>, Andrew Jones <ajones@ventanamicro.com>, Andrew Morton <akpm@linux-foundation.org>, Anup Patel <anup@brainfault.org>, Atish Patra <atishp@atishpatra.org>, =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= <bjorn@rivosinc.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>, Sean Christopherson <seanjc@google.com>, linux-coco@lists.linux.dev, Dylan Reid <dylan@rivosinc.com>, abrestic@rivosinc.com, Samuel Ortiz <sameo@rivosinc.com>, Christoph Hellwig <hch@infradead.org>, Conor Dooley <conor.dooley@microchip.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Guo Ren <guoren@kernel.org>, Heiko Stuebner <heiko@sntech.de>, Jiri Slaby <jirislaby@kernel.org>, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Mayuresh Chitale <mchitale@ventanamicro.com>, Palmer Dabbelt <palmer@dabbelt.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul Walmsley <paul.walmsley@sifive.com>, Rajnesh Kanwal <rkanwal@rivosinc.com>, Uladzislau Rezki <urezki@gmail.com> Subject: [RFC 02/48] RISC-V: KVM: Improve KVM error reporting to the user space Date: Wed, 19 Apr 2023 15:16:30 -0700 Message-Id: <20230419221716.3603068-3-atishp@rivosinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419221716.3603068-1-atishp@rivosinc.com> References: <20230419221716.3603068-1-atishp@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 1741820009 X-Stat-Signature: phi3b6kqh17t58gyuepzuxdozn6usywt X-HE-Tag: 1681942654-461404 X-HE-Meta: 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 CLH/ptcg qz4DKbf7Na8fi+dekIn5cGUeP+Zub0JBNw7KHtji4bysF9BUgg9ljgtrkdYE+RbteP+C0td51HIwTwKL4L5PVPe0aRIBZcgQ/Lsndw7FaOOMu8XO2ANsccWxGvnd5jvVYTloCsQV+h1XQoP6lsEA/IBlwFrY6opdgtKH1qkvTCfVLGIYeTWbcRCkpytP5QjumNswR+ZdVXwUOtIBxOjubNJg/WUo7dnr5jSBMI+0y4UHR3jPc37W9YD5CYAFGe2jCkuKz3XELeQa8eSLKd28nDgseUzrAMY6btC9TQWZGjxxoXqlYOr++AO1CXbSmXTwycJReGvXCOjWJ5lgBif7qV3P6IRYpEfvnJIHykePv5gucNyel5WUuSze8HbyZUcBgT+2GVXFzz6SuQKx5nuIfCbRA5dLjbEhLRQWtvf1IohpujsTaIrDbPWWlB8v2W1JV9OqOY2Nd1DggioE1GKYZuG+zzg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
RISC-V CoVE support
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expand
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diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h index 3176355..e78503a 100644 --- a/arch/riscv/include/asm/csr.h +++ b/arch/riscv/include/asm/csr.h @@ -96,6 +96,8 @@ #define EXC_VIRTUAL_INST_FAULT 22 #define EXC_STORE_GUEST_PAGE_FAULT 23 +#define EXC_CUSTOM_KVM_COVE_RUN_FAIL 48 + /* PMP configuration */ #define PMP_R 0x01 #define PMP_W 0x02 diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index b41d0e7..11440df 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -245,6 +245,10 @@ enum KVM_RISCV_SBI_EXT_ID { /* One single KVM irqchip, ie. the AIA */ #define KVM_NR_IRQCHIPS 1 +/* run->fail_entry.hardware_entry_failure_reason codes. */ +#define KVM_EXIT_FAIL_ENTRY_IMSIC_FILE_UNAVAILABLE (1ULL << 0) +#define KVM_EXIT_FAIL_ENTRY_COVE_RUN_VCPU (1ULL << 1) + #endif #endif /* __LINUX_KVM_RISCV_H */
This patch adds RISC-V specific cause for ioctl run failure. For now, it will be used for the below two cases: 1. Insufficient IMSIC files if VM is configured to run in HWACCEL mode 2. TSM is unable to run run_vcpu SBI call for TVMs KVM also uses a custom scause bit(48) to distinguish this case from regular vcpu exit causes. Signed-off-by: Atish Patra <atishp@rivosinc.com> --- arch/riscv/include/asm/csr.h | 2 ++ arch/riscv/include/uapi/asm/kvm.h | 4 ++++ 2 files changed, 6 insertions(+)