From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luwei Kang Subject: [PATCH v13 05/12] perf/x86/intel/pt: add new capability for Intel PT Date: Wed, 24 Oct 2018 16:05:09 +0800 Message-ID: <1540368316-12998-6-git-send-email-luwei.kang@intel.com> References: <1540368316-12998-1-git-send-email-luwei.kang@intel.com> Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, pbonzini@redhat.com, rkrcmar@redhat.com, joro@8bytes.org, songliubraving@fb.com, peterz@infradead.org, alexander.shishkin@linux.intel.com, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, thomas.lendacky@amd.com, konrad.wilk@oracle.com, mattst88@gmail.com, Janakarajan.Natarajan@amd.com, dwmw@amazon.co.uk, jpoimboe@redhat.com, marcorr@google.com, ubizjak@gmail.com, sean.j.christopherson@intel.com, jmattson@google.com, linux-kernel@vger.kernel.org, Luwei Kang To: kvm@vger.kernel.org, x86@kernel.org Return-path: In-Reply-To: <1540368316-12998-1-git-send-email-luwei.kang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org This adds support for "output to Trace Transport subsystem" capability of Intel PT. It means that PT can output its trace to an MMIO address range rather than system memory buffer. Acked-by: Song Liu 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 53e481a..9597ea6 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 00f4afb..634f99b 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