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From: Haozhong Zhang <haozhong.zhang@intel.com>
To: Joao Martins <joao.m.martins@oracle.com>
Cc: Kevin Tian <kevin.tian@intel.com>, Keir Fraser <keir@xen.org>,
	Jan Beulich <jbeulich@suse.com>,
	Jun Nakajima <jun.nakajima@intel.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	xen-devel@lists.xen.org,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH v2 06/14] x86/time.c: Scale host TSC in pvclock properly
Date: Wed, 30 Dec 2015 09:07:01 +0800	[thread overview]
Message-ID: <20151230010701.GA16809@hz-desktop.sh.intel.com> (raw)
In-Reply-To: <5682CF74.1070901@oracle.com>

On 12/29/15 18:22, Joao Martins wrote:
> 
> 
> On 12/10/2015 11:56 AM, Joao Martins wrote:
> > 
> > 
> > On 12/10/2015 12:23 AM, Haozhong Zhang wrote:
> >> On 12/08/15 14:21, Boris Ostrovsky wrote:
> >>> On 12/07/2015 08:52 PM, Haozhong Zhang wrote:
> >>>> On 12/07/15 13:14, Boris Ostrovsky wrote:
> >>>>> On 12/06/2015 03:58 PM, Haozhong Zhang wrote:
> >>>>>> This patch makes the pvclock return the scaled host TSC and
> >>>>>> corresponding scaling parameters to HVM domains if guest TSC is not
> >>>>>> emulated and TSC scaling is enabled.
> >>>>>>
> >>>>>> Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
> >>>>> +Joao who has been staring at this code.
> >>>>>
> > Apologies for late response but I was out in the beginning of the week and was
> > still catching up.
> > 
> >>>>> Joao, can you run this series through your test with non-native frequency?
> >>>>> (http://lists.xenproject.org/archives/html/xen-devel/2015-12/msg00683.html
> >>>>> provides an interface to set it in config file).
> >>>>>
> > OK, I will run it through my time warp tests.
> I have using these for a while now and so far I got no issues with a non-native
> frequency [I don't have a Skylake processor in my possession to test it
> natively]. In addition I rebased my vdso tests on top of your series and no
> warps too. But will raise out any flags if I found anything wrong.
>

Thanks for the test!

Haozhong

  reply	other threads:[~2015-12-30  1:07 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-06 20:58 [PATCH v2 00/14] Add VMX TSC scaling support Haozhong Zhang
2015-12-06 20:58 ` [PATCH v2 01/14] svm: Fix incorrect TSC scaling Haozhong Zhang
2015-12-07 16:49   ` Boris Ostrovsky
2015-12-06 20:58 ` [PATCH v2 02/14] x86/time.c: Fix domain type check in tsc_set_info() Haozhong Zhang
2015-12-07 16:49   ` Boris Ostrovsky
2015-12-06 20:58 ` [PATCH v2 03/14] x86/time.c: Use correct guest TSC frequency " Haozhong Zhang
2015-12-07 16:57   ` Boris Ostrovsky
2015-12-08  0:30     ` Haozhong Zhang
2015-12-06 20:58 ` [PATCH v2 04/14] x86/time.c: Use correct guest TSC frequency in tsc_get_info() Haozhong Zhang
2015-12-07 17:53   ` Boris Ostrovsky
2015-12-08  1:08     ` Haozhong Zhang
2015-12-08 18:26       ` Boris Ostrovsky
2015-12-10  0:14         ` Haozhong Zhang
2015-12-06 20:58 ` [PATCH v2 05/14] x86/hvm: Scale host TSC when setting/getting guest TSC Haozhong Zhang
2015-12-07 17:54   ` Boris Ostrovsky
2015-12-06 20:58 ` [PATCH v2 06/14] x86/time.c: Scale host TSC in pvclock properly Haozhong Zhang
2015-12-07 18:14   ` Boris Ostrovsky
2015-12-08  1:52     ` Haozhong Zhang
2015-12-08 19:21       ` Boris Ostrovsky
2015-12-10  0:23         ` Haozhong Zhang
2015-12-10 11:56           ` Joao Martins
2015-12-29 18:22             ` Joao Martins
2015-12-30  1:07               ` Haozhong Zhang [this message]
2015-12-06 20:58 ` [PATCH v2 07/14] svm: Remove redundant TSC scaling in svm_set_tsc_offset() Haozhong Zhang
2015-12-07 18:25   ` Boris Ostrovsky
2015-12-08  1:54     ` Haozhong Zhang
2015-12-06 20:58 ` [PATCH v2 08/14] x86/hvm: Collect information of TSC scaling ratio Haozhong Zhang
2015-12-07 18:31   ` Boris Ostrovsky
2015-12-10 10:19   ` Tian, Kevin
2015-12-10 10:27     ` Zhang, Haozhong
2015-12-06 20:58 ` [PATCH v2 09/14] x86/hvm: Setup " Haozhong Zhang
2015-12-07 18:42   ` Boris Ostrovsky
2015-12-08  1:58     ` Haozhong Zhang
2015-12-10 10:27   ` Tian, Kevin
2015-12-10 10:37     ` Zhang, Haozhong
2015-12-06 20:58 ` [PATCH v2 10/14] x86/hvm: Replace architecture TSC scaling by a common function Haozhong Zhang
2015-12-07 18:55   ` Boris Ostrovsky
2015-12-08  2:06     ` Haozhong Zhang
2015-12-10 10:29   ` Tian, Kevin
2015-12-06 20:58 ` [PATCH v2 11/14] x86/hvm: Move saving/loading vcpu's TSC to common code Haozhong Zhang
2015-12-07 18:56   ` Boris Ostrovsky
2015-12-10 10:30   ` Tian, Kevin
2015-12-06 20:58 ` [PATCH v2 12/14] x86/hvm: Detect TSC scaling through hvm_funcs Haozhong Zhang
2015-12-07 18:58   ` Boris Ostrovsky
2015-12-10 10:31   ` Tian, Kevin
2015-12-06 20:58 ` [PATCH v2 13/14] vmx: Add VMX RDTSC(P) scaling support Haozhong Zhang
2015-12-10 10:33   ` Tian, Kevin
2015-12-06 20:58 ` [PATCH v2 14/14] docs: Add descriptions of TSC scaling in xl.cfg and tscmode.txt Haozhong Zhang
2015-12-10 10:40   ` Tian, Kevin
2015-12-10 10:56     ` Zhang, Haozhong
2015-12-06 21:14 ` [PATCH v2 00/14] Add VMX TSC scaling support Haozhong Zhang
2015-12-07  9:03   ` Egger, Christoph
2015-12-07 10:16     ` Haozhong Zhang
2015-12-07 17:04       ` Andrew Cooper
2015-12-08  2:13         ` Haozhong Zhang
2015-12-10 10:43         ` Tian, Kevin
2015-12-10 11:13           ` Haozhong Zhang
2015-12-11  7:35             ` Tian, Kevin
2015-12-11 10:09               ` Andrew Cooper
2015-12-07 10:37   ` Jan Beulich
2015-12-07 10:56     ` Haozhong Zhang

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