Date: Mon, 5 Jun 2017 15:58:56 -0700 From: Mark Millard <markmi@dsl-only.net> To: Justin Hibbits <jhibbits@freebsd.org> Cc: ppc@freebsd.org Subject: Re: 64-bit time_t on 32-bit powerpc Message-ID: <B5D57905-7DCB-450A-B414-D27D9D979EDD@dsl-only.net> In-Reply-To: <CAHSQbTDbQaK2k_q0OkpoCEwQF1v-XRrA8kg%2BPzYyhBY=UTQExQ@mail.gmail.com> References: <CAHSQbTC9UgCnpbpMj5dukY%2BGMwOpDy5FQACHGmb8EmU%2BdyQOuw@mail.gmail.com> <CAHSQbTDbQaK2k_q0OkpoCEwQF1v-XRrA8kg%2BPzYyhBY=UTQExQ@mail.gmail.com>
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On 2017-Jun-5, at 1:54 PM, Justin Hibbits <jhibbits@freebsd.org> wrote: > On Fri, Jun 2, 2017 at 11:45 PM, Justin Hibbits <jhibbits@freebsd.org> wrote: >> Calling all powerpc(32) users, >> >> Attached is a patch which changes the size of time_t from 32-bit to 64-bit >> on powerpc. ARM and MIPS already use 64-bit time_t, the only other holdout >> is i386, which cannot be changed. I want to get this in soon so there's >> plenty of soak time before 12 is branched. It works well enough for my >> cases, but I want others to poke, prod, and try to break it. Especially try >> your favorite ports builds, and make sure things still a) build, and b) work >> as expected. >> >> Almost forgot, too... With powerpc64 users, the compat32 has been updated as >> well, obviously. So, some testing of that is needed, too. >> >> - Justin > > I was just informed I forgot a very crucial part of the patch -- the > update to UPDATING: > > 20170612: > The FreeBSD/powerpc platform now uses a 64-bit type for time_t. This is > a very major incompatible change, so users of FreeBSD/powerpc must be > careful when performing source upgrades. It is best to run 'make > installworld' from an alternate root system, either a live CD/memory > stick, or a temporary root partition. Additionally, all ports must be > recompiled. > > In short: Do _not_ try to reboot to the new kernel with existing > userland. Boot to an alternate userland and install from there. What timing as far as live-update contexts go. . . ino64 requires a new kernel boot with an old world still in use: world must not have been updated first. So it appears one should not try to jump from pre-ino64 to post-powerpc-64-bit-time_t in one step via a live-system update sequence. > Also, shortly after I sent out the patch, I realized I hadn't tested > with TARGET_ARCH=powerpc64, which broke. I'll send out an updated > patch later tonight. === Mark Millard markmi at dsl-only.nethome | help
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