From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0E053E1233; Wed, 8 Jul 2026 06:35:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783492542; cv=none; b=M8daA4Uh76iLBoV1UgeMLc4odG36iJVcmd+TWRizmuVwV73ZCEfUZXSGIAfnV9PEMY+TxsYudhFqAC12tLBDOx3+qhdbHxJqD+M3rbw3imVXiji0Rpa7Nbb0+pj0NUKbBvHf7Up/b57pUAaXqJTbtY8PSSimYlWhYYL55uqU88E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783492542; c=relaxed/simple; bh=iR31i42jPvWxEBrDXkLYBzjaFhH50J+zeXzmWErTtUY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o+MSWr82ZgLpYNX2NBDFbqqC91Qxqr64AcB3gbFHd20wLg0AqpHM2CYrAaswIv/aNMAdVA3NcK/q7TWa+9mKCPLACV6tCtts8Cw6jkRuJRkOHk8DatZ4YPdb5NgdpFTCzEcOsaQHayTevTlt45HgIlwHQoqq8juSiqOHcsFaxSE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=G5XHQF0n; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="G5XHQF0n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 358F01F000E9; Wed, 8 Jul 2026 06:35:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783492538; bh=PA8F1W7llGaOJi7r9r5rWMqSe3373z1as7VGI4CJ2vc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=G5XHQF0ndIGTP3p8EJURObIxpJDUiOP0V/KlazC93DxE79dC6+H9HmXA+g1FmGLfL JyWLdcUAnmEqVVCyU6aE3daBsW90iOzXF0dZvifcCgBFG6nI/nhCgWGoIek0ZonCfF WPm0eDaaP4MvsD3MIpBGY5Mrd+YJMrTVsXb1s1EaIgyjHnyUEe13yncCN4sBOGlnXM O9DfYfJoGDOmQZ8+x4YNBVlmac1jIBPkhmrLYnZXte05dQyA+4yiRy5dND6oQGpWdZ WLo51dMEOeh8IawQM9alCYcM6GHk69KXoNWwUALvvxj7DBjoZ+/ixLveqHuUkFN9bf 8FwoYbK/ouCAQ== From: "Naveen N Rao (AMD)" To: Sean Christopherson , Borislav Petkov Cc: , , Paolo Bonzini , Nikunj A Dadhania , Tom Lendacky , Neeraj Upadhyay , Tianyu Lan , Dave Hansen , Thomas Gleixner Subject: [RFC PATCH v3 01/27] x86/apic: Propagate APIC_SPIV writes to hv for Secure AVIC Date: Wed, 8 Jul 2026 12:01:59 +0530 Message-ID: <891e7c5b74a9c027bc417a2dd32e23c0d4d0c336.1783490022.git.naveen@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Neeraj Upadhyay Hypervisor needs to be aware of the VAPIC's APIC_SPIV state for LVT masking/unmasking. So, propagate the guest's APIC_SPIV writes to the hypervisor. Fixes: c822f58a4fab ("x86/apic: Populate .read()/.write() callbacks of Secure AVIC driver") Signed-off-by: Neeraj Upadhyay --- arch/x86/kernel/apic/x2apic_savic.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/apic/x2apic_savic.c b/arch/x86/kernel/apic/x2apic_savic.c index dbc5678bc3b6..cb3b55225ab6 100644 --- a/arch/x86/kernel/apic/x2apic_savic.c +++ b/arch/x86/kernel/apic/x2apic_savic.c @@ -214,7 +214,6 @@ static void savic_write(u32 reg, u32 data) break; case APIC_TASKPRI: case APIC_EOI: - case APIC_SPIV: case SAVIC_NMI_REQ: case APIC_ESR: case APIC_ECTRL: @@ -223,6 +222,10 @@ static void savic_write(u32 reg, u32 data) case APIC_EILVTn(0) ... APIC_EILVTn(3): apic_set_reg(ap, reg, data); break; + case APIC_SPIV: + apic_set_reg(ap, reg, data); + savic_ghcb_msr_write(reg, data); + break; case APIC_ICR: savic_icr_write(data, 0); break; -- 2.54.0