From: Olaf Hering <olaf@aepfle.de>
To: Jan Beulich <JBeulich@suse.com>
Cc: "Tim Deegan" <tim@xen.org>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Wei Liu" <wei.liu2@citrix.com>,
"George Dunlap" <George.Dunlap@eu.citrix.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Ian Jackson" <ian.jackson@eu.citrix.com>,
"Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>,
xen-devel@lists.xen.org, "Julien Grall" <julien.grall@arm.com>
Subject: Re: [PATCH v5] new config option vtsc_tolerance_khz to avoid TSC emulation
Date: Thu, 29 Mar 2018 10:17:56 +0200 [thread overview]
Message-ID: <20180329081755.GG30726@aepfle.de> (raw)
In-Reply-To: <5ABCBA3502000078001B7055@prv1-mh.provo.novell.com>
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On Thu, Mar 29, Jan Beulich wrote:
> >>> On 27.03.18 at 11:26, <olaf@aepfle.de> wrote:
> > + khz_diff = cpu_khz > gtsc_khz ?
> > + cpu_khz - gtsc_khz : gtsc_khz - cpu_khz;
> abs() (or some variant of it, like __builtin_absl(), seeing that we
> don't appear to have any abstraction right now)?
I see no other usage of *abs*. Really optimize that one-shot function?
> d%d
A for an unsigned type? But I see it is done elsewhere, so it must be
correct.
Olaf
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next prev parent reply other threads:[~2018-03-29 8:17 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-27 9:26 [PATCH v5] new config option vtsc_tolerance_khz to avoid TSC emulation Olaf Hering
2018-03-28 16:27 ` Wei Liu
2018-03-28 16:49 ` George Dunlap
2018-03-28 16:52 ` Wei Liu
2018-03-28 17:07 ` George Dunlap
2018-03-28 17:13 ` Wei Liu
2018-03-29 8:04 ` Jan Beulich
2018-03-29 8:17 ` Olaf Hering [this message]
2018-03-29 8:35 ` Jan Beulich
2018-03-29 9:23 ` Olaf Hering
2018-03-29 9:56 ` Jan Beulich
2018-03-29 10:05 ` Olaf Hering
2018-03-29 10:36 ` Jan Beulich
2018-03-29 8:25 ` Roger Pau Monné
2018-03-29 8:32 ` Olaf Hering
2018-03-29 8:53 ` Jan Beulich
2018-03-29 8:58 ` Olaf Hering
2018-03-29 9:06 ` Roger Pau Monné
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