From patchwork Mon Jun 22 18:06:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Micha=C5=82_Leszczy=C5=84ski?= X-Patchwork-Id: 11618579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6488D912 for ; Mon, 22 Jun 2020 18:07:23 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4AC8220656 for ; Mon, 22 Jun 2020 18:07:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4AC8220656 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cert.pl Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jnQqI-0002Jh-30; Mon, 22 Jun 2020 18:06:50 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jnQqH-0002Jc-GW for xen-devel@lists.xenproject.org; Mon, 22 Jun 2020 18:06:49 +0000 X-Inumbo-ID: 232b9a68-b4b3-11ea-beb6-12813bfff9fa Received: from bagnar.nask.net.pl (unknown [195.187.242.196]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 232b9a68-b4b3-11ea-beb6-12813bfff9fa; Mon, 22 Jun 2020 18:06:47 +0000 (UTC) Received: from bagnar.nask.net.pl (unknown [172.16.9.10]) by bagnar.nask.net.pl (Postfix) with ESMTP id 85B54A2894; Mon, 22 Jun 2020 20:06:46 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by bagnar.nask.net.pl (Postfix) with ESMTP id 6FA8CA2881; Mon, 22 Jun 2020 20:06:45 +0200 (CEST) Received: from bagnar.nask.net.pl ([127.0.0.1]) by localhost (bagnar.nask.net.pl [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id KLl5yrCTlsJO; Mon, 22 Jun 2020 20:06:44 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by bagnar.nask.net.pl (Postfix) with ESMTP id C3B55A2894; Mon, 22 Jun 2020 20:06:44 +0200 (CEST) X-Virus-Scanned: amavisd-new at bagnar.nask.net.pl Received: from bagnar.nask.net.pl ([127.0.0.1]) by localhost (bagnar.nask.net.pl [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id oQ3AfMYdIzwJ; Mon, 22 Jun 2020 20:06:44 +0200 (CEST) Received: from belindir.nask.net.pl (belindir-ext.nask.net.pl [195.187.242.210]) by bagnar.nask.net.pl (Postfix) with ESMTP id 90A17A2881; Mon, 22 Jun 2020 20:06:44 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by belindir.nask.net.pl (Postfix) with ESMTP id 73AE821890; Mon, 22 Jun 2020 20:06:14 +0200 (CEST) Received: from belindir.nask.net.pl ([127.0.0.1]) by localhost (belindir.nask.net.pl [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id QL2k4gIO7Y9l; Mon, 22 Jun 2020 20:06:08 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by belindir.nask.net.pl (Postfix) with ESMTP id D030521C2B; Mon, 22 Jun 2020 20:06:08 +0200 (CEST) X-Virus-Scanned: amavisd-new at belindir.nask.net.pl Received: from belindir.nask.net.pl ([127.0.0.1]) by localhost (belindir.nask.net.pl [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 8N5wYx1KKGyw; Mon, 22 Jun 2020 20:06:08 +0200 (CEST) Received: from belindir.nask.net.pl (belindir.nask.net.pl [172.16.10.10]) by belindir.nask.net.pl (Postfix) with ESMTP id AA27421890; Mon, 22 Jun 2020 20:06:08 +0200 (CEST) Date: Mon, 22 Jun 2020 20:06:08 +0200 (CEST) From: =?utf-8?q?Micha=C5=82_Leszczy=C5=84ski?= To: xen-devel@lists.xenproject.org Message-ID: <1617453791.11443328.1592849168658.JavaMail.zimbra@cert.pl> Subject: [PATCH v3 0/7] Implement support for external IPT monitoring MIME-Version: 1.0 X-Originating-IP: [172.16.10.10] X-Mailer: Zimbra 8.6.0_GA_1194 (ZimbraWebClient - GC83 (Win)/8.6.0_GA_1194) Thread-Topic: Implement support for external IPT monitoring Thread-Index: fAatEklvenYpYrSWj77J6AQD/dj+xA== X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Kevin Tian , Stefano Stabellini , Julien Grall , Jun Nakajima , Wei Liu , Andrew Cooper , Ian Jackson , George Dunlap , "Kang, Luwei" , Jan Beulich , Anthony PERARD , Tamas K Lengyel , Roger Pau =?utf-8?b?TW9ubsOp?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Intel Processor Trace is an architectural extension available in modern Intel family CPUs. It allows recording the detailed trace of activity while the processor executes the code. One might use the recorded trace to reconstruct the code flow. It means, to find out the executed code paths, determine branches taken, and so forth. The abovementioned feature is described in Intel(R) 64 and IA-32 Architectures Software Developer's Manual Volume 3C: System Programming Guide, Part 3, Chapter 36: "Intel Processor Trace." This patch series implements an interface that Dom0 could use in order to enable IPT for particular vCPUs in DomU, allowing for external monitoring. Such a feature has numerous applications like malware monitoring, fuzzing, or performance testing. Also thanks to Tamas K Lengyel for a few preliminary hints before first version of this patch was submitted to xen-devel. Changed since v1: * MSR_RTIT_CTL is managed using MSR load lists * other PT-related MSRs are modified only when vCPU goes out of context * trace buffer is now acquired as a resource * added vmtrace_pt_size parameter in xl.cfg, the size of trace buffer must be specified in the moment of domain creation * trace buffers are allocated on domain creation, destructed on domain destruction * HVMOP_vmtrace_ipt_enable/disable is limited to enabling/disabling PT these calls don't manage buffer memory anymore * lifted 32 MFN/GFN array limit when acquiring resources * minor code style changes according to review Changed since v2: * trace buffer is now allocated on domain creation (in v2 it was allocated when hvm param was set) * restored 32-item limit in mfn/gfn arrays in acquire_resource and instead implemented hypercall continuations * code changes according to Jan's and Roger's review Michal Leszczynski (7): memory: batch processing in acquire_resource() x86/vmx: add Intel PT MSR definitions x86/vmx: add IPT cpu feature x86/vmx: add do_vmtrace_op tools/libxc: add xc_vmtrace_* functions tools/libxl: add vmtrace_pt_size parameter tools/proctrace: add proctrace tool docs/man/xl.cfg.5.pod.in | 10 + tools/golang/xenlight/helpers.gen.go | 2 + tools/golang/xenlight/types.gen.go | 1 + tools/libxc/Makefile | 1 + tools/libxc/include/xenctrl.h | 39 +++ tools/libxc/xc_vmtrace.c | 94 ++++++ tools/libxl/libxl_create.c | 1 + tools/libxl/libxl_types.idl | 2 + tools/proctrace/COPYING | 339 ++++++++++++++++++++ tools/proctrace/Makefile | 50 +++ tools/proctrace/proctrace.c | 158 +++++++++ tools/xl/xl_parse.c | 4 + xen/arch/x86/hvm/hvm.c | 168 ++++++++++ xen/arch/x86/hvm/vmx/vmcs.c | 7 +- xen/arch/x86/hvm/vmx/vmx.c | 31 ++ xen/arch/x86/mm.c | 28 ++ xen/common/domain.c | 3 + xen/common/memory.c | 32 +- xen/include/asm-x86/cpufeature.h | 1 + xen/include/asm-x86/hvm/hvm.h | 9 + xen/include/asm-x86/hvm/vmx/vmcs.h | 4 + xen/include/asm-x86/hvm/vmx/vmx.h | 14 + xen/include/asm-x86/msr-index.h | 37 +++ xen/include/public/arch-x86/cpufeatureset.h | 1 + xen/include/public/domctl.h | 1 + xen/include/public/hvm/hvm_op.h | 26 ++ xen/include/public/hvm/params.h | 2 +- xen/include/public/memory.h | 1 + xen/include/xen/sched.h | 4 + xen/include/xlat.lst | 1 + 30 files changed, 1066 insertions(+), 5 deletions(-) create mode 100644 tools/libxc/xc_vmtrace.c create mode 100644 tools/proctrace/COPYING create mode 100644 tools/proctrace/Makefile create mode 100644 tools/proctrace/proctrace.c