From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 15DCFCEBF9A for ; Tue, 18 Nov 2025 03:23:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vLCIB-0003Xc-A5; Mon, 17 Nov 2025 22:22:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vLCHu-0002Zs-Ma for qemu-devel@nongnu.org; Mon, 17 Nov 2025 22:21:50 -0500 Received: from mgamail.intel.com ([192.198.163.13]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vLCHr-0004HZ-Ik for qemu-devel@nongnu.org; Mon, 17 Nov 2025 22:21:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763436108; x=1794972108; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kMqBy7CxyEmFl74t7tv9rzwXuI+1Gc0Y9duW9Lw4FqE=; b=BQlUOqi1JZdRuog4W78vEAGO5svvQa5w6bl+jv4uAvAmyE/AgdlzGKAH HmFJ5PIhA2i10LimTzGpUQpgWjBi+ZRyCKPvuDhteAiWWoLTAvz7kkU/p 8/M2BJxpofZV9UJbSVsYZAVqZFhiSP5kjE50bHV4FSpKiyTBKD9Q1FD02 al2qesee1xJQCMoJLLIUoTiMxKFLHvDCuD58Yw2BUVE62I0Ef5YX/Di9D J6OyTiuRdLjcSJVzrE9BdEx77GBqGnKP0qBYuUkPBh6t+03jhoEN/GApr kvds6FB4guCnlpwmnATXdNPZzvsKqf8AEczXNklN1VlC7t/CV0MM+h+uC A==; X-CSE-ConnectionGUID: XStaM3ruQYmnHfFF6SnVKw== X-CSE-MsgGUID: 1lSe30PmQnmbN+peWpBhvw== X-IronPort-AV: E=McAfee;i="6800,10657,11616"; a="68053924" X-IronPort-AV: E=Sophos;i="6.19,313,1754982000"; d="scan'208";a="68053924" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 19:21:24 -0800 X-CSE-ConnectionGUID: lvZ5Y8FHQ4O9xXAhUCWG6g== X-CSE-MsgGUID: yMxHwHelT1Wult8IrPLcng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,313,1754982000"; d="scan'208";a="221537366" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.39]) by fmviesa001.fm.intel.com with ESMTP; 17 Nov 2025 19:21:20 -0800 From: Zhao Liu To: Paolo Bonzini , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Chao Gao , Xin Li , John Allen , Babu Moger , Mathias Krause , Dapeng Mi , Zide Chen , Xiaoyao Li , Chenyi Qiang , Farrah Chen , Zhao Liu Subject: [PATCH v4 19/23] i386/cpu: Mark cet-u & cet-s xstates as migratable Date: Tue, 18 Nov 2025 11:42:27 +0800 Message-Id: <20251118034231.704240-20-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251118034231.704240-1-zhao1.liu@intel.com> References: <20251118034231.704240-1-zhao1.liu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.13; envelope-from=zhao1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Cet-u and cet-s are supervisor xstates. Their states are saved/loaded by saving/loading related CET MSRs. And there're the "vmstate_cet" and "vmstate_pl0_ssp" to migrate these MSRs. Thus, it's safe to mark them as migratable. Tested-by: Farrah Chen Signed-off-by: Zhao Liu --- Changes Since v3: - Add the flags in FEAT_XSAVE_XSS_LO. --- target/i386/cpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 4d29e784061c..848e3ccbb8e3 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1484,7 +1484,8 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .ecx = 1, .reg = R_ECX, }, - .migratable_flags = XSTATE_ARCH_LBR_MASK, + .migratable_flags = XSTATE_CET_U_MASK | XSTATE_CET_S_MASK | + XSTATE_ARCH_LBR_MASK, }, [FEAT_XSAVE_XSS_HI] = { .type = CPUID_FEATURE_WORD, -- 2.34.1