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From: Jan Beulich <jbeulich@suse.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Wei Liu" <wl@xen.org>, "Roger Pau Monné" <roger.pau@citrix.com>
Subject: [Xen-devel] [PATCH 0/4] x86: reduce errors in frequency calculations / unrelated cleanup
Date: Fri, 13 Mar 2020 10:23:51 +0100	[thread overview]
Message-ID: <60130f14-3fc5-e40d-fec6-2448fefa6fc4@suse.com> (raw)

While looking into ways to increase the accuracy of the clock speeds
we work with (in particular by possibly obtaining information from
hardware rather than measuring), I first of all noticed some
avoidable rounding errors in some of our calculations. That's what
patches 2 and 3 are intended to deal with. Patch 1 is preparatory
cleanup, while patch 4 simply addresses something I got annoyed by
yet another time while doing this investigation.

1: APIC: adjust types and comments in calibrate_APIC_clock()
2: time: reduce rounding errors in calculations
3: APIC: reduce rounding errors in calculations
4: APIC: restrict certain messages to BSP

Jan

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             reply	other threads:[~2020-03-13  9:24 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-13  9:23 Jan Beulich [this message]
2020-03-13  9:25 ` [Xen-devel] [PATCH 1/4] x86/APIC: adjust types and comments in calibrate_APIC_clock() Jan Beulich
2020-03-13 14:46   ` Andrew Cooper
2020-03-13  9:25 ` [Xen-devel] [PATCH 2/4] x86/time: reduce rounding errors in calculations Jan Beulich
2020-03-13 15:14   ` Andrew Cooper
2020-03-16  8:58     ` Jan Beulich
2020-03-16 13:27       ` Andrew Cooper
2020-03-13  9:26 ` [Xen-devel] [PATCH 3/4] x86/APIC: " Jan Beulich
2020-03-13 15:50   ` Andrew Cooper
2020-03-16  9:07     ` Jan Beulich
2020-03-16 13:28       ` Andrew Cooper
2020-03-13  9:26 ` [Xen-devel] [PATCH 4/4] x86/APIC: restrict certain messages to BSP Jan Beulich
2020-03-13 16:18   ` Andrew Cooper
2020-03-16  9:10     ` Jan Beulich
2020-04-02  7:55       ` Ping: " Jan Beulich
2020-04-02 17:55   ` Andrew Cooper
2020-04-03  7:32     ` Jan Beulich
2020-05-14 10:01   ` Roger Pau Monné
2020-05-14 12:31     ` Jan Beulich
2020-05-14 13:12       ` Roger Pau Monné

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