From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shuai Ruan Subject: [PATCH v2 0/6] add xsaves/xrstors support Date: Fri, 17 Jul 2015 15:26:50 +0800 Message-ID: <1437118016-25547-1-git-send-email-shuai.ruan@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: kevin.tian@intel.com, wei.liu2@citrix.com, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, jun.nakajima@intel.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, eddie.dong@intel.com, jbeulich@suse.com, keir@xen.org List-Id: xen-devel@lists.xenproject.org Changes in v2: * Address comments from Andrew/chao/Jan, mainly: * Add details information of xsaves/xrstors feature. * Remove XGETBV1/XSAVEC/XSAVEOPT out of 'else' in patch 3. * Change macro name XGETBV to XGETBV1 in patch 4. This patchset enable xsaves/xrstors feature which will be available on Intel Skylake and later platform. Like xsave/xrstor, xsaves/xrstors feature will save and load processor state from a region of memory called XSAVE area. While unlike xsave/xrstor, xsaves/xrstors: a) use the compacted format only for the extended region of the XSAVE area which saves memory for you; b) can operate on supervisor state components so the feature is prerequisite to support new supervisor state components; c) execute only if CPL=0. Detail hardware spec can be found in chapter 13 (section 13.11 13.12) of the Intel SDM [1]. patch1: add xsaves/xrstors support for pv guest patch2: add xsaves/xrstors support for xen patch3-5: add xsaves/xrstors support for hvm guest patch6: swtich on detection of xsaves/xrstors/xgetbv in xen [1] Intel SDM (http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-manual-325462.pdf) Shuai Ruan (6): x86/xsaves: enable xsaves/xrstors for pv guest x86/xsaves: enable xsaves/xrstors in xen x86/xsaves: enable xsaves/xrstors for hvm guest libxc: expose xsaves/xgetbv1/xsavec to hvm guest x86/xsaves: support compact format for hvm save/restore x86/xsaves: detect xsaves/xgetbv1 in xen tools/libxc/xc_cpuid_x86.c | 8 +- xen/arch/x86/domain.c | 6 + xen/arch/x86/hvm/hvm.c | 55 +++++++- xen/arch/x86/hvm/vmx/vmcs.c | 7 +- xen/arch/x86/hvm/vmx/vmx.c | 18 +++ xen/arch/x86/i387.c | 5 + xen/arch/x86/traps.c | 87 +++++++++++++ xen/arch/x86/x86_64/mm.c | 52 ++++++++ xen/arch/x86/xstate.c | 259 +++++++++++++++++++++++++++++++------ xen/include/asm-x86/domain.h | 1 + xen/include/asm-x86/hvm/vmx/vmcs.h | 5 + xen/include/asm-x86/hvm/vmx/vmx.h | 2 + xen/include/asm-x86/mm.h | 1 + xen/include/asm-x86/msr-index.h | 2 + xen/include/asm-x86/xstate.h | 15 ++- 15 files changed, 475 insertions(+), 48 deletions(-) -- 1.9.1