Date: Tue, 19 Sep 2023 17:28:31 +0200 From: Sebastian Huber <sebastian.huber@embedded-brains.de> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: hackers@freebsd.org Subject: Re: Remove timecounter tc_counter_mask member? Message-ID: <d3e9e071-f4f9-40a9-b656-92a8853ddb08@embedded-brains.de> In-Reply-To: <202309162044.38GKi7RZ022115@critter.freebsd.dk> References: <bc1a7b28-5e7b-4ee6-aae8-f95adc65fc76@embedded-brains.de> <202309162044.38GKi7RZ022115@critter.freebsd.dk>
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On 16.09.23 22:44, Poul-Henning Kamp wrote: > Sebastian Huber writes: >=20 >> the timecounter structure contains a tc_counter_mask which enables >> support for time counters implementing less than 32-bits: >> Is the sys/x86/isa/clock.c still used? Are there chips on the market >> with 24-bit ACPI timers? > ... and are there any FreeBSD platforms using narrow timecounters > outside the src-tree ? >=20 > My personal gut feeling, is that we can get away with it, once i386 > is out of the picture. If it is in principle acceptable to remove the tc_counter_mask at some=20 point in time, would it make sense to issue a warning if a timecounter=20 is installed with a mask not equal to 0xffffffff? --=20 embedded brains GmbH Herr Sebastian HUBER Dornierstr. 4 82178 Puchheim Germany email: sebastian.huber@embedded-brains.de phone: +49-89-18 94 741 - 16 fax: +49-89-18 94 741 - 08 Registergericht: Amtsgericht M=C3=BCnchen Registernummer: HRB 157899 Vertretungsberechtigte Gesch=C3=A4ftsf=C3=BChrer: Peter Rasmussen, Thomas= D=C3=B6rfler Unsere Datenschutzerkl=C3=A4rung finden Sie hier: https://embedded-brains.de/datenschutzerklaerung/
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