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Tue, 7 Jul 2020 21:39:59 +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 HGbXudXT8yoR; Tue, 7 Jul 2020 21:39:53 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by belindir.nask.net.pl (Postfix) with ESMTP id 9964922427; Tue, 7 Jul 2020 21:39:53 +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 10026) with ESMTP id gZ2uXSNp0qxh; Tue, 7 Jul 2020 21:39:53 +0200 (CEST) Received: from mq-desktop.cert.pl (unknown [195.187.238.217]) by belindir.nask.net.pl (Postfix) with ESMTPSA id 510622236E; Tue, 7 Jul 2020 21:39:53 +0200 (CEST) X-Inumbo-ID: b7bf1741-c089-11ea-8de3-12813bfff9fa X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" X-Virus-Scanned: amavisd-new at bagnar.nask.net.pl X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" X-Quarantine-ID: X-Virus-Scanned: amavisd-new at belindir.nask.net.pl X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" From: =?UTF-8?q?Micha=C5=82=20Leszczy=C5=84ski?= To: xen-devel@lists.xenproject.org Subject: [PATCH v6 03/11] x86/vmx: add IPT cpu feature Date: Tue, 7 Jul 2020 21:39:42 +0200 Message-Id: <4d6eac657d082efaa0e7d141b5c9a07791b31f94.1594150543.git.michal.leszczynski@cert.pl> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: 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: Julien Grall , Kevin Tian , Stefano Stabellini , luwei.kang@intel.com, Jun Nakajima , Wei Liu , Andrew Cooper , Michal Leszczynski , Ian Jackson , George Dunlap , Jan Beulich , tamas.lengyel@intel.com, =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Michal Leszczynski Check if Intel Processor Trace feature is supported by current processor. Define vmtrace_supported global variable. Signed-off-by: Michal Leszczynski Reviewed-by: Roger Pau Monn=C3=A9 --- xen/arch/x86/hvm/vmx/vmcs.c | 15 ++++++++++++++- xen/common/domain.c | 2 ++ xen/include/asm-x86/cpufeature.h | 1 + xen/include/asm-x86/hvm/vmx/vmcs.h | 1 + xen/include/public/arch-x86/cpufeatureset.h | 1 + xen/include/xen/domain.h | 2 ++ 6 files changed, 21 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c index ca94c2bedc..3a53553f10 100644 --- a/xen/arch/x86/hvm/vmx/vmcs.c +++ b/xen/arch/x86/hvm/vmx/vmcs.c @@ -291,6 +291,20 @@ static int vmx_init_vmcs_config(void) _vmx_cpu_based_exec_control &=3D ~(CPU_BASED_CR8_LOAD_EXITING | CPU_BASED_CR8_STORE_EXITING); =20 + rdmsrl(MSR_IA32_VMX_MISC, _vmx_misc_cap); + + /* Check whether IPT is supported in VMX operation. */ + if ( !smp_processor_id() ) + vmtrace_supported =3D cpu_has_ipt && + (_vmx_misc_cap & VMX_MISC_PROC_TRACE); + else if ( vmtrace_supported && + !(_vmx_misc_cap & VMX_MISC_PROC_TRACE) ) + { + printk("VMX: IPT capabilities fatally differ between CPU%u and CPU= 0\n", + smp_processor_id()); + return -EINVAL; + } + if ( _vmx_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTRO= LS ) { min =3D 0; @@ -305,7 +319,6 @@ static int vmx_init_vmcs_config(void) SECONDARY_EXEC_ENABLE_VIRT_EXCEPTIONS | SECONDARY_EXEC_XSAVES | SECONDARY_EXEC_TSC_SCALING); - rdmsrl(MSR_IA32_VMX_MISC, _vmx_misc_cap); if ( _vmx_misc_cap & VMX_MISC_VMWRITE_ALL ) opt |=3D SECONDARY_EXEC_ENABLE_VMCS_SHADOWING; if ( opt_vpid_enabled ) diff --git a/xen/common/domain.c b/xen/common/domain.c index 7cc9526139..a45cf023f7 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -82,6 +82,8 @@ struct vcpu *idle_vcpu[NR_CPUS] __read_mostly; =20 vcpu_info_t dummy_vcpu_info; =20 +bool vmtrace_supported __read_mostly; + static void __domain_finalise_shutdown(struct domain *d) { struct vcpu *v; diff --git a/xen/include/asm-x86/cpufeature.h b/xen/include/asm-x86/cpufeat= ure.h index f790d5c1f8..555f696a26 100644 --- a/xen/include/asm-x86/cpufeature.h +++ b/xen/include/asm-x86/cpufeature.h @@ -104,6 +104,7 @@ #define cpu_has_clwb boot_cpu_has(X86_FEATURE_CLWB) #define cpu_has_avx512er boot_cpu_has(X86_FEATURE_AVX512ER) #define cpu_has_avx512cd boot_cpu_has(X86_FEATURE_AVX512CD) +#define cpu_has_ipt boot_cpu_has(X86_FEATURE_PROC_TRACE) #define cpu_has_sha boot_cpu_has(X86_FEATURE_SHA) #define cpu_has_avx512bw boot_cpu_has(X86_FEATURE_AVX512BW) #define cpu_has_avx512vl boot_cpu_has(X86_FEATURE_AVX512VL) diff --git a/xen/include/asm-x86/hvm/vmx/vmcs.h b/xen/include/asm-x86/hvm/v= mx/vmcs.h index 906810592f..6153ba6769 100644 --- a/xen/include/asm-x86/hvm/vmx/vmcs.h +++ b/xen/include/asm-x86/hvm/vmx/vmcs.h @@ -283,6 +283,7 @@ extern u32 vmx_secondary_exec_control; #define VMX_VPID_INVVPID_SINGLE_CONTEXT_RETAINING_GLOBAL 0x80000000000ULL extern u64 vmx_ept_vpid_cap; =20 +#define VMX_MISC_PROC_TRACE 0x00004000 #define VMX_MISC_CR3_TARGET 0x01ff0000 #define VMX_MISC_VMWRITE_ALL 0x20000000 =20 diff --git a/xen/include/public/arch-x86/cpufeatureset.h b/xen/include/publ= ic/arch-x86/cpufeatureset.h index fe7492a225..2c91862f2d 100644 --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -217,6 +217,7 @@ XEN_CPUFEATURE(SMAP, 5*32+20) /*S Supervisor = Mode Access Prevention */ XEN_CPUFEATURE(AVX512_IFMA, 5*32+21) /*A AVX-512 Integer Fused Multiply= Add */ XEN_CPUFEATURE(CLFLUSHOPT, 5*32+23) /*A CLFLUSHOPT instruction */ XEN_CPUFEATURE(CLWB, 5*32+24) /*A CLWB instruction */ +XEN_CPUFEATURE(PROC_TRACE, 5*32+25) /* Processor Tracing feature */ XEN_CPUFEATURE(AVX512PF, 5*32+26) /*A AVX-512 Prefetch Instructions = */ XEN_CPUFEATURE(AVX512ER, 5*32+27) /*A AVX-512 Exponent & Reciprocal = Instrs */ XEN_CPUFEATURE(AVX512CD, 5*32+28) /*A AVX-512 Conflict Detection Ins= trs */ diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h index 7e51d361de..61ebc6c24d 100644 --- a/xen/include/xen/domain.h +++ b/xen/include/xen/domain.h @@ -130,4 +130,6 @@ struct vnuma_info { =20 void vnuma_destroy(struct vnuma_info *vnuma); =20 +extern bool vmtrace_supported; + #endif /* __XEN_DOMAIN_H__ */ --=20 2.17.1