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AJvYcCUXTgYSsX/xWhBT8kwLRfz5ZTxf7BImho7Oj5b7bFSVdlAxZapM7WObopc7RXfIlvXz/P0=@vger.kernel.org X-Gm-Message-State: AOJu0YyMpEgxZ1zDQT4/K8USWV0fbcB0L5NzjJMXgGnC3xTb23hsubar gSqpC8f4k6C/L4SJM8pckatCtsLSAEv60Lkif0GRKSsXnHYoJEJ7EJNewPeNizmwFqX8fykAMyt LKRwv5rc+nMd1bVuC2Wqqo5go+8Q0+KY= X-Gm-Gg: ASbGncuUoyeBNRKqhcF8q8o6Vjk8bkpMUdF3JUVregchf7Xczx9GH3G2kqlck17Cb22 A/WlJxb/i5pJO9CLx6bM6A//0vnrfU8F+Ou0T/DYeaT+7SgXcKtNrQYQMsc9hdjLla3L8M9DfZ3 rvZLCcqb4K+GGbf6zxEh6x2XgR/BUojOs7P2CIyL4j6hUrT4DAoFuyxTYydbwOirlTVCUooFbct mYK X-Google-Smtp-Source: AGHT+IEJY08DSgDpcVBVWCiOM4YXR16RxEMJpSpYeJJu6a9bg/YiOcnZQ32P//Hrz6wfYmoyvSjGpmtju6CTbTfXjt8= X-Received: by 2002:a17:90b:1810:b0:313:271a:af56 with SMTP id 98e67ed59e1d1-31cc2608a57mr1301164a91.30.1752803141053; Thu, 17 Jul 2025 18:45:41 -0700 (PDT) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250709033242.267892-1-Neeraj.Upadhyay@amd.com> <20250709033242.267892-25-Neeraj.Upadhyay@amd.com> In-Reply-To: <20250709033242.267892-25-Neeraj.Upadhyay@amd.com> From: Tianyu Lan Date: Fri, 18 Jul 2025 09:45:05 +0800 X-Gm-Features: Ac12FXw-pxbYhghxKW3ky5r4WJn83Jm_TxQRSr21pyiYFmGrcxxWrUxKdNEoICI Message-ID: Subject: Re: [RFC PATCH v8 24/35] x86/apic: Add support to send IPI for Secure AVIC To: Neeraj Upadhyay Cc: linux-kernel@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, Thomas.Lendacky@amd.com, nikunj@amd.com, Santosh.Shukla@amd.com, Vasant.Hegde@amd.com, Suravee.Suthikulpanit@amd.com, David.Kaplan@amd.com, x86@kernel.org, hpa@zytor.com, peterz@infradead.org, seanjc@google.com, pbonzini@redhat.com, kvm@vger.kernel.org, kirill.shutemov@linux.intel.com, huibo.wang@amd.com, naveen.rao@amd.com, kai.huang@intel.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Jul 9, 2025 at 11:42=E2=80=AFAM Neeraj Upadhyay wrote: > > With Secure AVIC only Self-IPI is accelerated. To handle all the > other IPIs, add new callbacks for sending IPI. These callbacks write > to the IRR of the target guest vCPU's APIC backing page and issue > GHCB protocol MSR write event for the hypervisor to notify the > target vCPU about the new interrupt request. > > For Secure AVIC GHCB APIC MSR writes, reuse GHCB msr handling code in > vc_handle_msr() by exposing a sev-internal sev_es_ghcb_handle_msr(). > > Co-developed-by: Kishon Vijay Abraham I > Signed-off-by: Kishon Vijay Abraham I > Signed-off-by: Neeraj Upadhyay > --- > Changes since v7: > - No change. Reviewed-by: Tianyu Lan --=20 Thanks Tianyu Lan