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 55EA4CCD1AB for ; Fri, 24 Oct 2025 06:36:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vCBOX-0003Ym-Bt; Fri, 24 Oct 2025 02:35:26 -0400 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 1vCBOR-0003Xu-4q for qemu-devel@nongnu.org; Fri, 24 Oct 2025 02:35:19 -0400 Received: from mgamail.intel.com ([192.198.163.9]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vCBOP-0003kG-BG for qemu-devel@nongnu.org; Fri, 24 Oct 2025 02:35:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761287717; x=1792823717; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=q1llAB51wlYD8DExeRchjbchwIbqPcgnJ8aGmhooIHs=; b=By965o7DuvBgMG7lNCDnN96JwA8X67cTSlUpv4cY7C/8UD1ga60SZ9fp NmAMUnZF5BYnQWt7PPPvwEl9Srlm9YV3OZCSFg1NRTvmwpEhnXC3GBNt5 7QMQc889PC2u/ZEBBuFwkixk3BY+5eIHajLUheQbQWGUme6St0abk0OMi dqMTTv/l+q+3BnQwRn9AGHqnuPP6c6PkVZZGRSmP1nPrAVjA84GrXC99S 0P5ekR2dBcKQEk3rTuuWG0bZxTIFzhlBt2TEpBigAUn2AJpm6WICXeKIZ N0aLE1QgGIe/dbgm78ce9EC+Mdgevap9DOVL2KSmHFnBwQz30S1pU/ANx Q==; X-CSE-ConnectionGUID: AEUk+y4fT52k7fLQJR8Y6g== X-CSE-MsgGUID: kFxMChShQimR3bbxMo5ZTw== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="74137891" X-IronPort-AV: E=Sophos;i="6.19,251,1754982000"; d="scan'208";a="74137891" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Oct 2025 23:35:17 -0700 X-CSE-ConnectionGUID: zdda8MoeRuaoDINh3c/nxA== X-CSE-MsgGUID: mKBG2dchQsOb/9ZT/rM9Xg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,251,1754982000"; d="scan'208";a="184276073" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.39]) by fmviesa006.fm.intel.com with ESMTP; 23 Oct 2025 23:35:14 -0700 From: Zhao Liu To: Paolo Bonzini , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Chao Gao , John Allen , Babu Moger , Mathias Krause , Dapeng Mi , Zide Chen , Chenyi Qiang , Xiaoyao Li , Farrah Chen , Zhao Liu Subject: [PATCH v3 10/20] i386/cpu: Add missing migratable xsave features Date: Fri, 24 Oct 2025 14:56:22 +0800 Message-Id: <20251024065632.1448606-11-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251024065632.1448606-1-zhao1.liu@intel.com> References: <20251024065632.1448606-1-zhao1.liu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.9; 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_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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 Xtile-cfg & xtile-data are both user xstates. Their xstates are cached in X86CPUState, and there's a related vmsd "vmstate_amx_xtile", so that it's safe to mark them as migratable. Arch lbr xstate is a supervisor xstate, and it is save & load by saving & loading related arch lbr MSRs, which are cached in X86CPUState, and there's a related vmsd "vmstate_arch_lbr". So it's also safe to mark it as migratable (even though KVM hasn't supported it - its migration support is completed in QEMU). PT is still unmigratable since KVM disabled it and there's no vmsd and no other emulation/simulation support. Tested-by: Farrah Chen Signed-off-by: Zhao Liu --- 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 1917376dbea9..b01729ad36d2 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1522,7 +1522,8 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .migratable_flags = XSTATE_FP_MASK | XSTATE_SSE_MASK | XSTATE_YMM_MASK | XSTATE_BNDREGS_MASK | XSTATE_BNDCSR_MASK | XSTATE_OPMASK_MASK | XSTATE_ZMM_Hi256_MASK | XSTATE_Hi16_ZMM_MASK | - XSTATE_PKRU_MASK, + XSTATE_PKRU_MASK | XSTATE_ARCH_LBR_MASK | XSTATE_XTILE_CFG_MASK | + XSTATE_XTILE_DATA_MASK, }, [FEAT_XSAVE_XCR0_HI] = { .type = CPUID_FEATURE_WORD, -- 2.34.1