From nobody Fri Nov 7 15:31:10 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1548253193037480.6887909355828; Wed, 23 Jan 2019 06:19:53 -0800 (PST) Received: from localhost ([127.0.0.1]:35628 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmJNg-0003jT-2v for importer@patchew.org; Wed, 23 Jan 2019 09:19:52 -0500 Received: from eggs.gnu.org ([209.51.188.92]:37872) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmJHb-0007h6-Cr for qemu-devel@nongnu.org; Wed, 23 Jan 2019 09:13:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gmJHa-0006ix-8x for qemu-devel@nongnu.org; Wed, 23 Jan 2019 09:13:35 -0500 Received: from mga12.intel.com ([192.55.52.136]:53088) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gmJHZ-0006aZ-V2 for qemu-devel@nongnu.org; Wed, 23 Jan 2019 09:13:34 -0500 Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Jan 2019 06:13:22 -0800 Received: from local-michael-cet-test.sh.intel.com ([10.239.159.128]) by orsmga006.jf.intel.com with ESMTP; 23 Jan 2019 06:13:20 -0800 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,511,1539673200"; d="scan'208";a="110416520" From: Yang Weijiang To: pbonzini@redhat.com, cdupontd@redhat.com, rkrcmar@redhat.com, qemu-devel@nongnu.org, mst@redhat.com, yu-cheng.yu@intel.com, yi.z.zhang@intel.com, hjl.tools@gmail.com Date: Wed, 23 Jan 2019 05:06:47 +0800 Message-Id: <20190122210648.26320-4-weijiang.yang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190122210648.26320-1-weijiang.yang@intel.com> References: <20190122210648.26320-1-weijiang.yang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.136 Subject: [Qemu-devel] [PATCH v2 3/4] Add hepler functions for CPUID xsave area size calculation. X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: weijiang.yang@intel.com, Zhang Yi Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" These functions are called when return CPUID xsave area size information. Signed-off-by: Zhang Yi Signed-off-by: Yang Weijiang --- target/i386/cpu.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index f6c7bdf6fe..d8c36e0f2f 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1284,12 +1284,34 @@ static inline bool accel_uses_host_cpuid(void) return kvm_enabled() || hvf_enabled(); } =20 +static uint32_t xsave_area_size_compacted(uint64_t mask) +{ + int i; + uint64_t ret =3D 0; + uint32_t offset; + + for (i =3D 0; i < ARRAY_SIZE(x86_ext_save_areas); i++) { + const ExtSaveArea *esa =3D &x86_ext_save_areas[i]; + offset =3D i >=3D 2 ? ret : esa->offset; + if ((mask >> i) & 1) { + ret =3D MAX(ret, offset + esa->size); + } + } + return ret; +} + static inline uint64_t x86_cpu_xsave_components(X86CPU *cpu) { return ((uint64_t)cpu->env.features[FEAT_XSAVE_COMP_HI]) << 32 | cpu->env.features[FEAT_XSAVE_COMP_LO]; } =20 +static inline uint64_t x86_cpu_xsave_sv_components(X86CPU *cpu) +{ + return ((uint64_t)cpu->env.features[FEAT_XSAVE_SV_HI]) << 32 | + cpu->env.features[FEAT_XSAVE_SV_LO]; +} + const char *get_register_name_32(unsigned int reg) { if (reg >=3D CPU_NB_REGS32) { @@ -4919,8 +4941,10 @@ static void x86_cpu_enable_xsave_components(X86CPU *= cpu) } } =20 - env->features[FEAT_XSAVE_COMP_LO] =3D mask; + env->features[FEAT_XSAVE_COMP_LO] =3D mask & CPUID_XSTATE_USER_MASK; env->features[FEAT_XSAVE_COMP_HI] =3D mask >> 32; + env->features[FEAT_XSAVE_SV_LO] =3D mask & CPUID_XSTATE_KERNEL_MASK; + env->features[FEAT_XSAVE_SV_HI] =3D mask >> 32; } =20 /***** Steps involved on loading and filtering CPUID data --=20 2.17.1