From: Wei Liu <wei.liu2@citrix.com>
To: Luwei Kang <luwei.kang@intel.com>
Cc: kevin.tian@intel.com, sstabellini@kernel.org,
wei.liu2@citrix.com, jbeulich@suse.com,
George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
tim@xen.org, xen-devel@lists.xen.org, jun.nakajima@intel.com
Subject: Re: [PATCH RESEND v1 1/7] x86: add a flag to enable Intel processor trace
Date: Thu, 26 Apr 2018 13:09:09 +0100 [thread overview]
Message-ID: <20180426120909.6miciqgzuvxfxpyy@citrix.com> (raw)
In-Reply-To: <1516039953-2988-2-git-send-email-luwei.kang@intel.com>
On Tue, Jan 16, 2018 at 02:12:27AM +0800, Luwei Kang wrote:
> This patch add a flag to enable Intel PT (Intel processor trace).
> Default value is 1 (enabled).
>
> Signed-off-by: Luwei Kang <luwei.kang@intel.com>
> ---
> docs/misc/xen-command-line.markdown | 7 +++++++
> xen/arch/x86/cpu/Makefile | 1 +
> xen/arch/x86/cpu/intel_pt.c | 27 +++++++++++++++++++++++++++
> xen/include/asm-x86/intel_pt.h | 26 ++++++++++++++++++++++++++
> 4 files changed, 61 insertions(+)
> create mode 100644 xen/arch/x86/cpu/intel_pt.c
> create mode 100644 xen/include/asm-x86/intel_pt.h
>
> diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown
> index 781110d..95411cf 100644
> --- a/docs/misc/xen-command-line.markdown
> +++ b/docs/misc/xen-command-line.markdown
> @@ -1009,6 +1009,13 @@ debug hypervisor only).
> ### idle\_latency\_factor
> > `= <integer>`
>
> +### intel\_pt
> +> `= <boolean>`
> +
> +> Default: `true`
> +
After reading the manual a bit I think this option needs to be more
sophisticated.
The series only implements guest-only tracing, while in the future we might
want host-only tracing and system wide tracing.
Even the other modes aren't implemented yet we should leave room for
them.
Wei.
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next prev parent reply other threads:[~2018-04-26 12:09 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-15 18:12 [PATCH RESEND v1 0/7] Intel Processor Trace virtulization enabling Luwei Kang
2018-01-15 18:12 ` [PATCH RESEND v1 1/7] x86: add a flag to enable Intel processor trace Luwei Kang
2018-03-09 16:53 ` Wei Liu
2018-03-12 9:25 ` Kang, Luwei
2018-04-26 12:09 ` Wei Liu [this message]
2018-04-27 8:22 ` Kang, Luwei
2018-04-27 8:32 ` Wei Liu
2018-04-27 13:03 ` Jan Beulich
2018-04-27 23:16 ` Kang, Luwei
2018-04-26 12:29 ` Jan Beulich
2018-04-27 9:01 ` Kang, Luwei
2018-04-27 12:15 ` Jan Beulich
2018-04-27 23:18 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 2/7] x86: configure vmcs for Intel processor trace virtualization Luwei Kang
2018-04-26 12:34 ` Jan Beulich
2018-04-28 1:07 ` Kang, Luwei
2018-04-30 7:42 ` Jan Beulich
2018-05-02 7:22 ` Kang, Luwei
2018-05-02 9:09 ` Jan Beulich
2018-05-02 9:22 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 3/7] x86: add intel proecessor trace support for cpuid Luwei Kang
2018-04-30 15:43 ` Konrad Rzeszutek Wilk
2018-05-02 7:32 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 4/7] x86: add intel processor trace context Luwei Kang
2018-04-26 12:11 ` Wei Liu
2018-04-26 12:59 ` Jan Beulich
2018-04-28 1:26 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 5/7] x86: Implement Intel Processor Trace context switch Luwei Kang
2018-04-26 12:11 ` Wei Liu
2018-04-27 8:53 ` Kang, Luwei
2018-05-02 15:19 ` Wei Liu
2018-05-02 15:43 ` Jan Beulich
2018-05-02 16:15 ` Wei Liu
2018-05-02 16:51 ` Andrew Cooper
2018-05-03 7:27 ` Jan Beulich
2018-05-03 7:26 ` Jan Beulich
2018-05-03 7:51 ` Wei Liu
2018-04-26 13:12 ` Jan Beulich
2018-04-28 2:56 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 6/7] x86: Implement Intel Processor Trace MSRs read/write Luwei Kang
2018-04-26 13:20 ` Jan Beulich
2018-04-27 12:26 ` Jan Beulich
2018-05-03 5:22 ` Kang, Luwei
2018-05-03 7:33 ` Jan Beulich
2018-05-03 9:40 ` Kang, Luwei
2018-05-03 11:36 ` Jan Beulich
2018-05-04 3:53 ` Kang, Luwei
2018-05-04 12:06 ` Jan Beulich
2018-05-10 9:06 ` Kang, Luwei
2018-01-15 18:12 ` [PATCH RESEND v1 7/7] x86: Disable Intel Processor Trace when VMXON in L1 guest Luwei Kang
2018-01-16 8:41 ` [PATCH RESEND v1 0/7] Intel Processor Trace virtulization enabling Jan Beulich
2018-01-16 9:02 ` Kang, Luwei
2018-01-16 9:30 ` Jan Beulich
2018-01-16 9:45 ` Kang, Luwei
2018-04-26 12:12 ` Wei Liu
2018-05-03 4:06 ` Kang, Luwei
2018-05-03 5:55 ` Razvan Cojocaru
2018-05-03 8:06 ` Wei Liu
2018-05-04 4:10 ` Kang, Luwei
2018-05-03 9:49 ` Kang, Luwei
2018-05-03 10:01 ` Andrew Cooper
2018-05-04 3:08 ` Kang, Luwei
2018-05-10 9:26 ` Kang, Luwei
2018-05-10 9:56 ` Andrew Cooper
2018-05-15 2:50 ` Kang, Luwei
2018-04-30 15:42 ` Konrad Rzeszutek Wilk
2018-05-02 7:27 ` Kang, Luwei
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