From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZq7qa2hbVXOdwzDVCmoo11HK/GjCtG31Fy3DaNTs1u5RFE1+Ts/amXZM6o6hdFMjS8qbwoe ARC-Seal: i=1; a=rsa-sha256; t=1526288589; cv=none; d=google.com; s=arc-20160816; b=TIOERhjm9ZrZgtwqXnjGx3s5zaUEUrIRGJBWK7qu3dgC5uU1W0aIwskDEURKviNsy+ /bPU/dhyaWWZQ3WH4Scczq08AQqg1q5R6X/WeOvxd66GNXSsjg5LbHfmgsB5fJRCWL8l bj9zMgs+y8XNj/2AtBliXCiKANFn2yKFrlEGiUDk6FnYG49k70iBGvAzVvqJPc1Zk+Qh kWiqZAuSYlFWHs0YKriW3wV+enzobUEyHkUcEEKG7E0kbNI3n/v305LYNow7TA14aOIH V+1Z6G6u6UPHdrpQn9xKbLVUeo2DQ3aYO0kVm9YsZVjLk7sc+Ir/Tg88rBSARWT/aQVe jW5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=oSARMHova8ckAQXE+qqZL+iAS6nh8fBZNoiR3BUv6yc=; b=FWo2t9CT4Ewvj1yTDLyLVO2t/hp/lOVmUadCDnW5Y9I0TNoPXVaLfjKsXOwdBDdF8s m/Yafje59LnqRFv1MD4q8B3FIm6AgvULABvMc09Fxflhf5nEcS+w9Z3iCeZAMXgEgkcn P/VcDn55fn2335fqBs/dcYOkZz6sejMe8SF3JtB7Yv93IkH0zfxUEegr07ZhusnuWfae UCata86YoJvqwmAzW0X3RDX8fnhS0Awx6s7jEWZuiRPiRXSW2lxh1Hs+LpGL27cH+xA3 LX/fWd+so1NqNb3m3x++J5KtXIY0rdAah67pPabqFuLrYsZ6uqEunWkDnJ+6jxsOblwm m/fA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of luwei.kang@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=luwei.kang@intel.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of luwei.kang@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=luwei.kang@intel.com X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,399,1520924400"; d="scan'208";a="39701872" From: Luwei Kang To: kvm@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, chao.p.peng@linux.intel.com, thomas.lendacky@amd.com, bp@suse.de, Kan.liang@intel.com, Janakarajan.Natarajan@amd.com, dwmw@amazon.co.uk, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, peterz@infradead.org, mathieu.poirier@linaro.org, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, pbonzini@redhat.com, rkrcmar@redhat.com, david@redhat.com, bsd@redhat.com, yu.c.zhang@linux.intel.com, joro@8bytes.org, Luwei Kang Subject: [PATCH v8 04/12] perf/x86/intel/pt: add new capability for Intel PT Date: Mon, 14 May 2018 18:57:04 +0800 Message-Id: <1526295432-20640-5-git-send-email-luwei.kang@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1526295432-20640-1-git-send-email-luwei.kang@intel.com> References: <1526295432-20640-1-git-send-email-luwei.kang@intel.com> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1600429584242007561?= X-GMAIL-MSGID: =?utf-8?q?1600429584242007561?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: CPUID(EAX=14H,ECX=0):EBX[bit 3] = 1 indicates support of output to Trace Transport subsystem. MSR IA32_RTIT_CTL.FabricEn[bit 6] is reserved if CPUID.(EAX=14H, ECX=0):ECX[bit 3] = 0. This is use for emulate IA32_RTIT_CTL MSR read/write in KVM. KVM guest write IA32_RTIT_CTL will trap to root mode and a #GP would be injected to guest if set IA32_RTIT_CTL.FabricEn with CPUID.(EAX=14H, ECX=0):ECX[bit 3] = 0. Signed-off-by: Luwei Kang --- arch/x86/events/intel/pt.c | 1 + arch/x86/include/asm/intel_pt.h | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c index c80e2f5..f65f97a 100644 --- a/arch/x86/events/intel/pt.c +++ b/arch/x86/events/intel/pt.c @@ -68,6 +68,7 @@ PT_CAP(topa_output, 0, CPUID_ECX, BIT(0)), PT_CAP(topa_multiple_entries, 0, CPUID_ECX, BIT(1)), PT_CAP(single_range_output, 0, CPUID_ECX, BIT(2)), + PT_CAP(output_subsys, 0, CPUID_ECX, BIT(3)), PT_CAP(payloads_lip, 0, CPUID_ECX, BIT(31)), PT_CAP(num_address_ranges, 1, CPUID_EAX, 0x3), PT_CAP(mtc_periods, 1, CPUID_EAX, 0xffff0000), diff --git a/arch/x86/include/asm/intel_pt.h b/arch/x86/include/asm/intel_pt.h index 4270421..2de4db0 100644 --- a/arch/x86/include/asm/intel_pt.h +++ b/arch/x86/include/asm/intel_pt.h @@ -16,6 +16,7 @@ enum pt_capabilities { PT_CAP_topa_output, PT_CAP_topa_multiple_entries, PT_CAP_single_range_output, + PT_CAP_output_subsys, PT_CAP_payloads_lip, PT_CAP_num_address_ranges, PT_CAP_mtc_periods, -- 1.8.3.1