Date: Fri, 21 Jun 2024 04:47:50 -0700 From: Colin Percival <cperciva@freebsd.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: Re: git: 00d061855deb - main - Garbage-collect ACPI-safe timer and friends Message-ID: <01aa02dd-f7e9-40f8-965f-9ce78a8c6437@freebsd.org> In-Reply-To: <202406210738.45L7cA2e007446@critter.freebsd.dk> References: <202406210719.45L7JU1H020535@gitrepo.freebsd.org> <202406210738.45L7cA2e007446@critter.freebsd.dk>
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On 6/21/24 00:38, Poul-Henning Kamp wrote: > -------- > Colin Percival writes: > >> commit 00d061855deb93df5d709c8a794985ebb55012f8 >> >> Garbage-collect ACPI-safe timer and friends >> >> In 2001 when the ACPI timer was introduced, it included code to check >> for a bug present in some Pentium II and Pentium III chipsets; > > Boy, does that bring back memories... > > Apologies for not taking this out behind the barn myself, I had totally > forgotten about it. I only became aware of this in 2021 when I noticed that every time we booted we spent 140 ms checking if we had this chipset bug. The workaround could probably have stuck around for another 20 years if it had been faster. ;-) -- Colin Percival FreeBSD Release Engineering Lead & EC2 platform maintainer Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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