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Wed, 19 Apr 2023 15:19:02 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id jn11-20020a170903050b00b00196807b5189sm11619190plb.292.2023.04.19.15.19.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 15:19:02 -0700 (PDT) From: Atish Patra To: linux-kernel@vger.kernel.org Cc: Rajnesh Kanwal , Atish Patra , Alexandre Ghiti , Andrew Jones , Andrew Morton , Anup Patel , Atish Patra , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Suzuki K Poulose , Will Deacon , Marc Zyngier , Sean Christopherson , linux-coco@lists.linux.dev, Dylan Reid , abrestic@rivosinc.com, Samuel Ortiz , Christoph Hellwig , Conor Dooley , Greg Kroah-Hartman , Guo Ren , Heiko Stuebner , Jiri Slaby , kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Mayuresh Chitale , Palmer Dabbelt , Paolo Bonzini , Paul Walmsley , Uladzislau Rezki Subject: [RFC 42/48] RISC-V: Allow host to inject any ext interrupt id to a CoVE guest. Date: Wed, 19 Apr 2023 15:17:10 -0700 Message-Id: <20230419221716.3603068-43-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-Queue-Id: C0F96A000A X-Rspamd-Server: rspam09 X-Stat-Signature: 3fm3tny9i95xd4tzjwdkh1wwrc9stdhr X-HE-Tag: 1681942743-430895 X-HE-Meta: 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 cuPSh+v0 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 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: From: Rajnesh Kanwal Ideally, host must not inject any external interrupt until explicitly allowed by the guest. This should be done per interrupt id but currently adding allow-all call in init_IRQ. In future, it will be modified to allow specific interrupts only. Signed-off-by: Rajnesh Kanwal Signed-off-by: Atish Patra --- arch/riscv/kernel/irq.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index eb9a68a..b5e0fd8 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -11,6 +11,8 @@ #include #include #include +#include +#include static struct fwnode_handle *(*__get_intc_node)(void); @@ -36,8 +38,18 @@ int arch_show_interrupts(struct seq_file *p, int prec) void __init init_IRQ(void) { + int ret; + irqchip_init(); if (!handle_arch_irq) panic("No interrupt controller found."); sbi_ipi_init(); + + if (is_cove_guest()) { + /* FIXME: For now just allow all interrupts. */ + ret = sbi_covg_allow_all_external_interrupt(); + + if (ret) + pr_err("Failed to allow external interrupts.\n"); + } } -- 2.25.1