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[2001:1ae9:1c2:4c00:c955:d4da:b5fa:7bb3]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38f259d94acsm23492868f8f.75.2025.02.21.03.20.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Feb 2025 03:20:25 -0800 (PST) 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, 21 Feb 2025 12:20:25 +0100 Message-Id: Cc: , , , , , , , , To: "BillXiang" , From: =?utf-8?q?Radim_Kr=C4=8Dm=C3=A1=C5=99?= Subject: Re: [PATCH v2] riscv: KVM: Remove unnecessary vcpu kick References: <20250221104538.2147-1-xiangwencheng@lanxincomputing.com> In-Reply-To: <20250221104538.2147-1-xiangwencheng@lanxincomputing.com> 2025-02-21T18:45:38+08:00, BillXiang : > Remove the unnecessary kick to the vCPU after writing to the vs_file > of IMSIC in kvm_riscv_vcpu_aia_imsic_inject. > > For vCPUs that are running, writing to the vs_file directly forwards > the interrupt as an MSI to them and does not need an extra kick. > > For vCPUs that are descheduled after emulating WFI, KVM will enable > the guest external interrupt for that vCPU in > kvm_riscv_aia_wakeon_hgei. This means that writing to the vs_file > will cause a guest external interrupt, which will cause KVM to wake > up the vCPU in hgei_interrupt to handle the interrupt properly. > > Signed-off-by: BillXiang > --- > v2: Revise the commit message to ensure it meets the required=20 > standards for acceptance Nice, thanks. 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