From nobody Tue Dec 16 23:06:36 2025 Received: from mail-pg1-f179.google.com (mail-pg1-f179.google.com [209.85.215.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 69A80280036; Tue, 6 May 2025 13:07:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746536840; cv=none; b=i6rmgHV/XS1qECSqNtcXNXVneSRVo/gEHDoxWZVSpmtwi27TAzty2qFnQ4uFpY6FMNUglpeVe2jvHbPSL7KYoyl3W3RpubNpAN4+9NGXLt0h2bBrsa4FePTCHEPIr5ZH/o1uEADH+tzO7SiQH/76MYn+jaYqwZQnUEwFh7IvrS0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746536840; c=relaxed/simple; bh=6ol08QsW5KtrjtLaoCDOTYhW6X9+VyStX3Uq+5shMMQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=klqMLMNvE/o6bjugT+NbCzrIKP3Dm9hU0cyr6GmuuBve6oLr9YanFqmheH9JAlHs6fvMyQCceQTwyfV1Yqu5sB3CamB6SRquW3tbCwtyk/xXTm92ZtqgZ75uw/0b2XoujTciMbiGEv1kVqe8VKIjAgxOqJ81/qTaJeimHz+Mu8Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=aYtvOv3M; arc=none smtp.client-ip=209.85.215.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="aYtvOv3M" Received: by mail-pg1-f179.google.com with SMTP id 41be03b00d2f7-b1fcb97d209so2068395a12.1; Tue, 06 May 2025 06:07:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1746536838; x=1747141638; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JOoejVfer1yIcu5sSZWVe+lsfjP71eKhOQHPyl3cYx8=; b=aYtvOv3MMDYFKC2MtX2Q9piwnGErgug4n4YZu28hC2IWiYUxuG5C+ZcoB3ma7UJ4Rp mRjIuP0MonhtalH7+hQvHTcGyozj2QIkZEgcyRbA42I2N/L8IAbIhNc3GEQwWAj6aj/m e+pRIPQkK7B9Zpxsrm1NNbllMLzTvtE6xStiboGyagZ+Z62Lu8vNqiR8nbgf7JUfbuBl /hXkJ8FywJsmIhsw2wIqRmBCU4O75696VbXkFUinVZfWHbBENK8nQQkC8AwuKMCw0QJC eFjZSKhpz2cmQuN3Cz9EjZBpYCYcMM6y9WNV0IkfdTBi/Yus3XoBrYwpOUS7JAsGnY5b 6jHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746536838; x=1747141638; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JOoejVfer1yIcu5sSZWVe+lsfjP71eKhOQHPyl3cYx8=; b=G/++dl4FPuP/+kqmIZ2dVsSM8/Pv04zbsU2LZWr3DNeZ11axXsmR0ka4fCd7S0KVqx ZYSDZZJKkFhhT4SzpuqxHHEQGPIjwyvg/xh6J3/RI+wckHMSeEXxpV6rrY/23Kd06esY 1Qo31HE5cJbaTfd8UyW0QAAR2JVIWeh5Z9RVuw5CoFHu85OkX/fro/0NL2+Mq+KQcrHE Q//hK78xCf1sczJZNSjq4LHIZE9ZchSy/zO/AMGbGudHRJNtBe0FQEF6aoa7kB5PfZW6 4lg/CIS1EIm9raUWoHVsIgfJiWLrKOu1JIWMM9ViBU/+Ms0DfTNLpWi0TSz5E3bWha6Z vJKA== X-Forwarded-Encrypted: i=1; AJvYcCXBMjGYQn5v/f5kyICdiRakifjOeFYf6wSQ80sjve2YHlPao96q9GNrk0TNAh2BqrhX8+RYq32+CfqRsJM=@vger.kernel.org X-Gm-Message-State: AOJu0YziMQ5rCcg7Z41JQm9tKKiEiIvb136bIbjvYLM9ILTWsxD4xohW 7L4I0+ezsFAeOwGRLRlbhkB8VY8QH5sgHVnYvS23/w7h8WnRtC6wXouEuw== X-Gm-Gg: ASbGnctzjXQQZ6XPuQUn6Qc7i7RJoQCO93BkHDHh1i+8ehIvN56nJHuNrX8EoF7NQdD XspTaVqddga8sOokXwb7YNGTJ4Dtf/XCu/O6jFizMEzyUoxEfkywUbuZBjQKebGUpohE8pgj0+Z SQWqQhnMMvT8izLKiKQIxFUtbF5tcCozZOSRIewqrio8UQAQfzinsJPssKBxLDD4QX47fr2ofLB Oq8NbQvKhBXgVgSY7VIkpCeLW6x9dmiDxwTQjoHZAPPSK8HvbqYHvi5Lht4ca86wrOEveGcNWcv f+2xLzZc8aKUdCIsW1JbFPQdSa12uWoHiX1jgB+Gupv4/KbfOY+1YNp+VVOwIYSZS2Xo9EqHLZv 2dgF9+sj15v1Kqd7C X-Google-Smtp-Source: AGHT+IGhIbOKui0wAWHcu/0qXDi6gq9875VkaQSHSgEa5LULBeVBHeYlmLz71zRMMA8ykoihSwCKNg== X-Received: by 2002:a17:902:f60d:b0:225:abd2:5e5a with SMTP id d9443c01a7336-22e32776c1fmr41344535ad.4.1746536838367; Tue, 06 May 2025 06:07:18 -0700 (PDT) Received: from ubuntu-Virtual-Machine.corp.microsoft.com ([2001:4898:80e8:72:2835:d413:5ee2:7e6a]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22e15229384sm72628275ad.206.2025.05.06.06.07.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 May 2025 06:07:17 -0700 (PDT) From: Tianyu Lan To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, Neeraj.Upadhyay@amd.com, yuehaibing@huawei.com, kvijayab@amd.com, jacob.jun.pan@linux.intel.com, jpoimboe@kernel.org, tiala@microsoft.com Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 4/6] x86/Hyper-V: Allow Hyper-V to inject Hyper-V vectors Date: Tue, 6 May 2025 09:07:09 -0400 Message-Id: <20250506130712.156583-5-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250506130712.156583-1-ltykernel@gmail.com> References: <20250506130712.156583-1-ltykernel@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@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" From: Tianyu Lan When Secure AVIC is enabled, call Secure AVIC function to allow Hyper-V to inject REENLIGHTENMENT, STIMER0 and CALLBACK vectors. Signed-off-by: Tianyu Lan --- arch/x86/hyperv/hv_init.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index ddeb40930bc8..d75df5c3965d 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -131,6 +131,18 @@ static int hv_cpu_init(unsigned int cpu) wrmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64); } =20 + /* Allow Hyper-V vector to be injected from Hypervisor. */ + if (ms_hyperv.features & HV_ACCESS_REENLIGHTENMENT) + x2apic_savic_update_vector(cpu, + HYPERV_REENLIGHTENMENT_VECTOR, true); + + if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE) + x2apic_savic_update_vector(cpu, + HYPERV_STIMER0_VECTOR, true); + + x2apic_savic_update_vector(cpu, HYPERVISOR_CALLBACK_VECTOR, true); + + return hyperv_init_ghcb(); } =20 --=20 2.25.1