From nobody Fri Oct 3 15:32:53 2025 Received: from mail.zytor.com (terminus.zytor.com [198.137.202.136]) (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 7D9302E2EF3; Fri, 29 Aug 2025 15:33:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.136 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756481590; cv=none; b=j579cpf+BKlojkB7HMffUH5vHCH4mpZtHA2LKWc+VxSEA1xVduAcNy8fCgURW8uKEx9+b1mcLLoqYXZjGLsoygS5vH94zWA5ljMAyNN4jLOY82KQCOHq3t/lvTLli/JFL04S7JMFex+hcO218MHuleea2zDeYzL0sJ1B0Sp8sdw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756481590; c=relaxed/simple; bh=dGIU0Te0b2UjpQBN0ljD4w2cmQFMKr3KMP0Hw1YgLEU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IALrX15h+4foYLZ8lPGj6KHWv+YIxSE118dDIsd20ChPUMq3r8pouWV3N8NOeTCjaIgnxIjaP5Syno184P6D1zqudwIWptcby5dOoqO2X2ywgn0825kjFXif20sVy+Qq9TN7Y9bg5j8pSCAKxoKBnf7Vo0gWEVRNtWME2Pa2+68= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com; spf=pass smtp.mailfrom=zytor.com; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b=Cy3Q4YwC; arc=none smtp.client-ip=198.137.202.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zytor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="Cy3Q4YwC" Received: from terminus.zytor.com (terminus.zytor.com [IPv6:2607:7c80:54:3:0:0:0:136]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 57TFVo4M2871953 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 29 Aug 2025 08:32:26 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 57TFVo4M2871953 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2025082201; t=1756481547; bh=x5APr7DYSSBSefCejuZvINp7dxvm6yF/POGDlz0O8VM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cy3Q4YwCmYdnx/jj15y7roWwaZCLUO5kdVgjTh557G3JM3LR2Gqw15uLG4L8ccjdh zSVpWR6QvkJXwk3tXe+EZ3PVrhe9Hns3o3DQ0ouEKCfUg+VzDBl2tIEeDuaiAR2V8P CGH6cZM9CF91R0Yz2KuM6wKvj1zJCVV1agtCLxe+V/bQMbn5228dmXLgCHORrvjOCO kxf7RMeEZ6jVavq6EOUUEN78qrQl1192AU13nbwTO08iEbFqaO6vs1jIrvBYhZbNIV SpVBVSO90nEPR2qL6kDBTXEtSeEEq+P2Z/6CYfg+m6F04BgrREJfXgiWjPC/RfxKEI pVqmMzLoDsRbg== From: "Xin Li (Intel)" To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org Cc: pbonzini@redhat.com, seanjc@google.com, corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, xin@zytor.com, luto@kernel.org, peterz@infradead.org, andrew.cooper3@citrix.com, chao.gao@intel.com, hch@infradead.org Subject: [PATCH v7 16/21] KVM: x86: Advertise support for FRED Date: Fri, 29 Aug 2025 08:31:44 -0700 Message-ID: <20250829153149.2871901-17-xin@zytor.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250829153149.2871901-1-xin@zytor.com> References: <20250829153149.2871901-1-xin@zytor.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: Xin Li Advertise support for FRED to userspace after changes required to enable FRED in a KVM guest are in place. Signed-off-by: Xin Li Signed-off-by: Xin Li (Intel) Tested-by: Shan Kang Tested-by: Xuelian Guo --- Change in v5: * Don't advertise FRED/LKGS together, LKGS can be advertised as an independent feature (Sean). * Add TB from Xuelian Guo. --- arch/x86/kvm/cpuid.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index ee05b876c656..1f15aad02c68 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -994,6 +994,7 @@ void kvm_set_cpu_caps(void) F(FSRS), F(FSRC), F(WRMSRNS), + X86_64_F(FRED), X86_64_F(LKGS), F(AMX_FP16), F(AVX_IFMA), --=20 2.51.0