On 2018-Dec-30, at 21:01, Jonathan Chen <jonc at chen.org.nz> wrote: > On Mon, 31 Dec 2018 at 14:34, Mark Millard via freebsd-ports > <freebsd-ports_at_freebsd.org> wrote: >> >> [Removing __packed did make the size and offsets match armv7 >> and the build worked based on the reconstructed qemu-arm-static.] > > Thanks for the analysis Mark! I've been suffering quite a few hangups > with my ports crossbuilds on amd64->armv7 on 12-STABLE, and I'll be > trying your suggestions to see whether it resolves the issue. If you have something like a kqread state for a hang-up consistently in the same place, then Mikael Urankar 's fix (or any other way of getting the right sizes and field offsets for kevent) has a chance of fixing what you have observed. But if you have a form of hang-up that shows no sign of being tied to kevent or hangs-up only sometimes, I'd be surprised if the __packed change(s) would fix the issue. I've seen such racy hang-ups from lld's creation of (#cpu)+2 threads, as FreeBSD counts cpus. I've selectively forced -Wl,--no-threads at times in specific contexts to avoid that. binutils ld does not tolerate the option. ports does not appear to have an equivalent of: LDFLAGS.lld+= -Wl,--no-threads that would be lld specific. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)Received on Mon Dec 31 2018 - 07:05:46 UTC
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