From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (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 94E3E2E1C57 for ; Mon, 27 Oct 2025 11:12:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761563572; cv=none; b=XFV1MK0hqXPK1lpDsiPPZH9/K5/5zn7jiIOkmraWDbVSspc/eWxUemgPG42ju/UbFYMDl49etBHbgdhYU0nGT/gQTOc//HbzS5rXTNGDHrAIYtKwDdVpPWyuMDq1cuOtWjjCDlfXneF8JvlypodEmX6QkvAAgehogFdkwE3miwI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761563572; c=relaxed/simple; bh=T7zC62ErZg1/hbryOP00DYUI5q8qL4AeEstwHLT26mU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XcthCkgvhVXf+MqdG4ykbWWFOYFmmSzqb/q7qlbXzi2E+Icz9r0qSU2GbNklcZK8iyaVSCXpCIafdkk5SqNyTzsA5Wx41uYFbr8zuQyZ7F0jT6xKXxjAzwqrMGMYzXwwaVJmjw04MtMVSTvRp9m+Gv8i5cjEH3uaEOAzpZPU1zA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EttLMYnx; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EttLMYnx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761563570; x=1793099570; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=T7zC62ErZg1/hbryOP00DYUI5q8qL4AeEstwHLT26mU=; b=EttLMYnxPQXc2dX/WRhGcV5RgCgwDF1Q+0JuwOTvQmSGz7duQsSxK40T TZN/GRJN3xko9mQp5VkArlRM933bp4S+U9puYPRILukpj8EkhI+sLTIx0 bzfa14qHGhlPWle78TmTbfjD8h7t8itybg3GVCRzJHn+U8ObBHJqaS4Dr cxBRw1Yi9mcv3168FDLFpHMA6zGU2o6xjsPCk8SbwFzntER1RQDYmk4rA wYBZxXN0xK5I9B6rFV5vKe+V2j0a9iREPkmaxP0Dlbdp+Nb0c0oo/H376 aWTXEMB/4MuSx2gBN9Ck7HAhA5sWwO5L+LxMm0v4y2TrZb948GLdM32ew g==; X-CSE-ConnectionGUID: H5NlfLouS+a00bn/MlteZw== X-CSE-MsgGUID: 5JhRBm4+Tz2V+S185iZpmA== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="81063919" X-IronPort-AV: E=Sophos;i="6.19,258,1754982000"; d="scan'208";a="81063919" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2025 04:12:49 -0700 X-CSE-ConnectionGUID: d0E73kGmQTSUZLk/GgIozw== X-CSE-MsgGUID: 11NVjgtuSLiG1Pimo6QKkg== X-ExtLoop1: 1 Received: from liuzhao-optiplex-7080.sh.intel.com (HELO localhost) ([10.239.160.39]) by fmviesa003.fm.intel.com with ESMTP; 27 Oct 2025 04:12:46 -0700 Date: Mon, 27 Oct 2025 19:34:56 +0800 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 Subject: Re: [PATCH v3 16/20] i386/cpu: Mark cet-u & cet-s xstates as migratable Message-ID: References: <20251024065632.1448606-1-zhao1.liu@intel.com> <20251024065632.1448606-17-zhao1.liu@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251024065632.1448606-17-zhao1.liu@intel.com> On Fri, Oct 24, 2025 at 02:56:28PM +0800, Zhao Liu wrote: > Date: Fri, 24 Oct 2025 14:56:28 +0800 > From: Zhao Liu > Subject: [PATCH v3 16/20] i386/cpu: Mark cet-u & cet-s xstates as migratable > X-Mailer: git-send-email 2.34.1 > > Cet-u and cet-s are supervisor xstates. Their states are saved/loaded by > saving/loading related CET MSRs. And there's a vmsd "vmstate_cet" to > migrate these MSRs. > > Thus, it's safe to mark them as migratable. > > 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 0bb65e8c5321..c08066a338a3 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_ARCH_LBR_MASK | XSTATE_XTILE_CFG_MASK | > + XSTATE_PKRU_MASK | XSTATE_CET_U_MASK | XSTATE_CET_S_MASK | CET-U & CET-S should be added to FEAT_XSAVE_XSS_LO. > + XSTATE_ARCH_LBR_MASK | XSTATE_XTILE_CFG_MASK | > XSTATE_XTILE_DATA_MASK, > }, > [FEAT_XSAVE_XCR0_HI] = { > -- > 2.34.1 >