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AJvYcCUuvk+KpWEju7pXzaREYK5gyIkGBGEhCELfwZSRIs0vfR3Bita8NyLOjJMVPmtyV9B5qJo=@vger.kernel.org X-Gm-Message-State: AOJu0YzG5HS66/1H8RodEhDW3ZeBT7gYFbzOJ9aw2SUWvIpXGu+hxVF+ 8XDIgNazDqVE6cPvuKd2f6M8lTwDPmBmscldtd4TDha0hV0eigXpCwwWDUEwQKHmaZxvsszhO1H I81RdmjGkV6N5PugW0O9lxnB3VqD9lFg= X-Gm-Gg: ASbGnct++SjtQrm/PWzbXGEJoZ7HlaoPje49o1wEhkJLZDUoTZZkrOebZAbnGHUEgRq Ijiyk7UW7Y+6cjWhKzWDk+uBLU2XJNsM2Qsy/tNgSE8iZwPrcenPg/4JW19RPaVJNq8y0a3G2xG 5wDs6cKBFhegO3KUJe/VDo/DHcx7doE1Yj3mT2JRkG2C+coLywsBsgyDh09T10mc7bTRKqGLSfX 3AJyjh8KPzJdJ4= X-Google-Smtp-Source: AGHT+IHJctuqSROAZ650UpkpwcTiZYiKPNisXk5FDavpFQBEzFA5DmMJwiPzvLSVnjsMRL62PR6InACqufXS044x6w0= X-Received: by 2002:a17:90b:4985:b0:311:ba32:164f with SMTP id 98e67ed59e1d1-31c9f47c2f6mr13403273a91.8.1752807486400; Thu, 17 Jul 2025 19:58:06 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250709033242.267892-1-Neeraj.Upadhyay@amd.com> <20250709033242.267892-28-Neeraj.Upadhyay@amd.com> In-Reply-To: <20250709033242.267892-28-Neeraj.Upadhyay@amd.com> From: Tianyu Lan Date: Fri, 18 Jul 2025 10:57:30 +0800 X-Gm-Features: Ac12FXzmMFbbHVIUaufe3AfDHemMMS8b8hp7m4xVu9SVkkGnzi8hG1q8jkGy4cE Message-ID: Subject: Re: [RFC PATCH v8 27/35] x86/apic: Add support to send NMI 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 11:45=E2=80=AFAM Neeraj Upadhyay wrote: > > Secure AVIC has introduced a new field in the APIC backing page > "NmiReq" that has to be set by the guest to request a NMI IPI > through APIC_ICR write. > > Add support to set NmiReq appropriately to send NMI IPI. > > Sending NMI IPI also requires Virtual NMI feature to be enabled > in VINTRL_CTRL field in the VMSA. However, this would be added by > a later commit after adding support for injecting NMI from the > hypervisor. > > 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 -- Thanks Tianyu Lan