Date: Thu, 9 Jun 2016 16:09:40 -0400 From: Justin Hibbits <jhibbits@freebsd.org> To: Doug Rabson <dfr@rabson.org> Cc: FreeBSD Arch <freebsd-arch@freebsd.org> Subject: Re: PowerPC 64-bit time_t Message-ID: <8CD57763-E623-480F-A2E4-3145A3C22F86@freebsd.org> In-Reply-To: <CACA0VUijv4bo%2BYQoLZudor7z7GW6pFi0sv%2B7ZGFo1HDq4P%2BWag@mail.gmail.com> References: <3FB65E20-0376-4041-86DE-F8CAB7F37314@freebsd.org> <CACA0VUijv4bo%2BYQoLZudor7z7GW6pFi0sv%2B7ZGFo1HDq4P%2BWag@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This would only be needed if syscall ABI compatibility is required, right? Considering the current support state and userbase of powerpc, a simple binary option of 32 vs 64 should be sufficient, I believe. For i386 it's a different story, since it's much more widely used (and tier1) so backwards compatibility is 100% necessary. - Justin On Jun 9, 2016, at 3:37 PM, Doug Rabson wrote: > Well you have to maintain the kernel's syscall ABI, which basically > means adding new syscalls for anything which is affected. > > On 9 June 2016 at 13:41, Justin Hibbits <jhibbits@freebsd.org> wrote: > At the devsummit earlier today I mentioned for FreeBSD 12 wanting 64- > bit time_t across the board. It was pointed out that the only ones > with 32-bit time_t are i386 and powerpc (32-bit). I've made the > changes necessary for at least kernel (world is still building right > now), but it's obviously an ABI and KBI incompatible change. > Addressing KBI is a nonissue, as that's expected to break at major > releases. ABI is another issue. I'm unsure how to properly address > ABI breakage -- bumping libc's .so version, or reversion all symbols > that use something with time_t, or something else. If I can address > it before the code freeze, it could be done for FreeBSD 11, which > leaves about 6 hours from now. > > Any thoughts? > > - Justin > _______________________________________________ > freebsd-arch@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to "freebsd-arch- > unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8CD57763-E623-480F-A2E4-3145A3C22F86>