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[2620:137:e000::1:20]) by mx.google.com with ESMTP id e21-20020a056402149500b0052228f1f784si11084258edv.148.2023.08.03.01.57.44; Thu, 03 Aug 2023 01:58:07 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=CqywbmOm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234036AbjHCHhF (ORCPT + 99 others); Thu, 3 Aug 2023 03:37:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231490AbjHCHgG (ORCPT ); Thu, 3 Aug 2023 03:36:06 -0400 Received: from mgamail.intel.com (unknown [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E0B049D3; Thu, 3 Aug 2023 00:32:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691047937; x=1722583937; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MUjDZ0YuHI5m2zqdXy/bAW5fa+u5BTJA3szPadv1RM0=; b=CqywbmOm5KXfXtJiq08pqISrrdTUPjhqUn9CPgyTRHFoTLQSBO092isI iP4doA23BdTIiVqhLX2O/Vpfy0Jn0po51dh1v5kKLIkzFUxuwIM9Sn/Pd z6zYwKa+NpETG/weYJqb/10iCVfzOWTVZ8vUGiDX0Io/4q8cvAw4I8Ev2 vpBym1Z71HR5TpwqgY6cLD4vhjSNqhsRCYyJxkGSbZTQ809iwPgDF0XBv Mmnv52jAoWxsshvYPAICRN7PcHKAGCJGJ2gkRjiY18p9vMfe9XAlQWl08 l/4WCrzT49M6Ej0tQzL0iJsXtgZaRCQRp/8ukSZrJ8YExEVo3Yu0r4jM8 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10790"; a="354708089" X-IronPort-AV: E=Sophos;i="6.01,251,1684825200"; d="scan'208";a="354708089" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Aug 2023 00:32:15 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10790"; a="794888471" X-IronPort-AV: E=Sophos;i="6.01,251,1684825200"; d="scan'208";a="794888471" Received: from embargo.jf.intel.com ([10.165.9.183]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Aug 2023 00:32:14 -0700 From: Yang Weijiang To: seanjc@google.com, pbonzini@redhat.com, peterz@infradead.org, john.allen@amd.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: rick.p.edgecombe@intel.com, chao.gao@intel.com, binbin.wu@linux.intel.com, weijiang.yang@intel.com Subject: [PATCH v5 03/19] KVM:x86: Report XSS as to-be-saved if there are supported features Date: Thu, 3 Aug 2023 00:27:16 -0400 Message-Id: <20230803042732.88515-4-weijiang.yang@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20230803042732.88515-1-weijiang.yang@intel.com> References: <20230803042732.88515-1-weijiang.yang@intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DATE_IN_PAST_03_06, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1773197682234456961 X-GMAIL-MSGID: 1773197682234456961 From: Sean Christopherson Add MSR_IA32_XSS to the list of MSRs reported to userspace if supported_xss is non-zero, i.e. KVM supports at least one XSS based feature. Signed-off-by: Sean Christopherson Signed-off-by: Yang Weijiang --- arch/x86/kvm/x86.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a6b9bea62fb8..0b9033551d8c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1451,6 +1451,7 @@ static const u32 msrs_to_save_base[] = { MSR_IA32_UMWAIT_CONTROL, MSR_IA32_XFD, MSR_IA32_XFD_ERR, + MSR_IA32_XSS, }; static const u32 msrs_to_save_pmu[] = { @@ -7172,6 +7173,10 @@ static void kvm_probe_msr_to_save(u32 msr_index) if (!(kvm_get_arch_capabilities() & ARCH_CAP_TSX_CTRL_MSR)) return; break; + case MSR_IA32_XSS: + if (!kvm_caps.supported_xss) + return; + break; default: break; }