From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 97BCB375ACF for ; Fri, 17 Apr 2026 07:32:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776411154; cv=none; b=WFEgEVw4oRXZpUwVygvB4hGw22fxSZxtdBOxqTTl/oo5xKM67QhOfO8o4/Hpr9hCXq/QcMdrnG0O/UW0pTtB+yzsydfE2mGh+mNW2TdtS4Lf9UOucj80dmi4ca68+NxccVcD67DSeHzu3cZqW1ZFiKtt6QnKfGcEulSqxRrpEUk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776411154; c=relaxed/simple; bh=uwFyOP6f56OLQye1sM8/AVVFhs1SdRMwyrTIN17qQxw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jJnKWVRKYAeiczSNFCudQMfqdVlL/X4cTpWPyC7qe1qp21b6soD8UkS4jmpxLWqQiG7MDyivhvsOuwe46J1O8KkuXpvmKA2TAnbDHlN3B9eed05V22bT0lPiuv3US4Tbzt4032ZNkZoBGMserW1QX4OsM4n5zLU6o9FV6/CDHkA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=FBYl3toq; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="FBYl3toq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776411154; x=1807947154; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=uwFyOP6f56OLQye1sM8/AVVFhs1SdRMwyrTIN17qQxw=; b=FBYl3toqcljU3VHw0WYOYFG1CFSFgSw7fuzRq8xHxVOwThve9eNS0NcN KV7MrjBgIo2PQqjocMugUIPCTd9mZTKDuCYGAxaHUu3HnHi6BQt+rtkZI M1mDXin/kMWCC5MBHqWijd4yvBUOBZa8nt2Afs4F0idhmhi6J4sDVZI2T IzizfgLOYKcK90B6QaX795ZbIvG1/DiYsRbSKjqQWaKBQPBFakK7rF6mL xBF725/vyx3OKVj6/VAWDhZogoNFq/iV1p9i2P7m7x3gILQhZpZ2NFWcL ABp1oAVXEM1iF3cZkbDx5g4d1rjgpo74lpogeMVV8JyHzq/Z+Wa+hKJVj Q==; X-CSE-ConnectionGUID: N2Uqm+r1TrSgF1yzgiqi5w== X-CSE-MsgGUID: kQx3tBuwQTmuBIiFNbgSKQ== X-IronPort-AV: E=McAfee;i="6800,10657,11761"; a="100070207" X-IronPort-AV: E=Sophos;i="6.23,183,1770624000"; d="scan'208";a="100070207" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2026 00:32:28 -0700 X-CSE-ConnectionGUID: QpUCXuhKSUunbz3nTlEHHA== X-CSE-MsgGUID: 1JlOaocDRfam4C0WInkJgw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,183,1770624000"; d="scan'208";a="226284927" Received: from litbin-desktop.sh.intel.com ([10.239.159.60]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2026 00:32:25 -0700 From: Binbin Wu To: kvm@vger.kernel.org Cc: pbonzini@redhat.com, seanjc@google.com, rick.p.edgecombe@intel.com, xiaoyao.li@intel.com, chao.gao@intel.com, kai.huang@intel.com, binbin.wu@linux.intel.com Subject: [RFC PATCH 11/27] KVM: SVM: Drop unnecessary clears of unsupported common x86 features Date: Fri, 17 Apr 2026 15:35:54 +0800 Message-ID: <20260417073610.3246316-12-binbin.wu@linux.intel.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20260417073610.3246316-1-binbin.wu@linux.intel.com> References: <20260417073610.3246316-1-binbin.wu@linux.intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove kvm_cpu_cap_clear() calls for IBT, BUS_LOCK_DETECT, and MSR_IMM in svm_set_cpu_caps() since they are not set in common code anymore. Signed-off-by: Binbin Wu --- arch/x86/kvm/svm/svm.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index a21c500e1a91..ab3405640764 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -5445,8 +5445,6 @@ static __init void svm_set_cpu_caps(void) kvm_caps.supported_perf_cap = 0; - kvm_cpu_cap_clear(X86_FEATURE_IBT, F_CPUID_SVM); - /* CPUID 0x80000001 and 0x8000000A (SVM features) */ if (nested) { kvm_cpu_cap_set(X86_FEATURE_SVM, F_CPUID_SVM); @@ -5517,13 +5515,6 @@ static __init void svm_set_cpu_caps(void) /* CPUID 0x8000001F (SME/SEV features) */ sev_set_cpu_caps(); - /* - * Clear capabilities that are automatically configured by common code, - * but that require explicit SVM support (that isn't yet implemented). - */ - kvm_cpu_cap_clear(X86_FEATURE_BUS_LOCK_DETECT, F_CPUID_SVM); - kvm_cpu_cap_clear(X86_FEATURE_MSR_IMM, F_CPUID_SVM); - kvm_setup_xss_caps(); kvm_finalize_cpu_caps(); } -- 2.46.0