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Re: New kernel interface for sys_tz and timewarp?
- From: "Theodore Y. Ts'o" <tytso at mit dot edu>
- To: Arnd Bergmann <arnd at arndb dot de>
- Cc: "H. Peter Anvin" <hpa at zytor dot com>, David Laight <David dot Laight at aculab dot com>, Linus Torvalds <torvalds at linux-foundation dot org>, Linux Kernel Mailing List <linux-kernel at vger dot kernel dot org>, Thomas Gleixner <tglx at linutronix dot de>, John Stultz <john dot stultz at linaro dot org>, Alexandre Belloni <alexandre dot belloni at bootlin dot com>, Stephen Boyd <sboyd at kernel dot org>, Florian Weimer <fweimer at redhat dot com>, Palmer Dabbelt <palmer at dabbelt dot com>, Alistair Francis <alistair dot francis at wdc dot com>, GNU C Library <libc-alpha at sourceware dot org>, Karel Zak <kzak at redhat dot com>, Lennart Poettering <lennart at poettering dot net>, OGAWA Hirofumi <hirofumi at mail dot parknet dot co dot jp>
- Date: Thu, 15 Aug 2019 11:05:30 -0400
- Subject: Re: New kernel interface for sys_tz and timewarp?
- References: <CAK8P3a0VxM1BkjY1D2FfHi6L-ho_NH3v3+gBu45EfpjLF5NU5w@mail.gmail.com> <CAHk-=wiO2CWONDBud4nxoPgUJN1JEewFWhHa5wAqY8G5rrTXRQ@mail.gmail.com> <20190814000622.GB20365@mit.edu> <342565604d704b6ebaf2e9ec28d3e109@AcuMS.aculab.com> <0089C4CC-DD85-48A1-869B-A9D71852BEC7@zytor.com> <CAK8P3a0VQ1F5xnRNmfeg-rAWbKb64u_8xfQjFNahNRoAHTMJ3g@mail.gmail.com>
On Thu, Aug 15, 2019 at 03:22:45PM +0200, Arnd Bergmann wrote:
> If 64-bit Windows relies on a working EFI RTC implementation, we could
> decide to leave the driver enabled on 64-bit and only disable it for
> 32-bit EFI. That way, future distros would no longer have to worry about
> the localtime hack, at least the ones that have dropped support for
> 32-bit x86 kernels.
... and who have also dropped support for legacy (non-UEFI) 64-bit
boot. Keep in mind that even for distributions which may install with
UEFI by default, if people have been upgrading from (for example)
Debian Jessie to Stretch to Buster, they may still be using non-UEFI
boot. This might be especially true on small Linode servers (such as,
for example, the one which is currently running my mail smarthost....)
- Ted