Date: Sun, 05 Mar 2017 16:27:56 +0000 From: Andrew Gierth <andrew@tao11.riddles.org.uk> To: Mark Millard <markmi@dsl-only.net> Cc: "freebsd-arm\@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Is CPUTYPE=cortex-A7 supposed to work? Message-ID: <87tw77iwx6.fsf@news-spur.riddles.org.uk> In-Reply-To: <70AE704A-C9FF-4742-88E9-147CD5B77BE8@dsl-only.net> (Mark Millard's message of "Sun, 5 Mar 2017 03:02:24 -0800") References: <871suc3nv8.fsf@news-spur.riddles.org.uk> <CANCZdfq4EwH%2B_9FVNai8s6Y-gdTjHJ8dNkJwSrnF%2BSAkdwvYdg@mail.gmail.com> <87tw7820fc.fsf@news-spur.riddles.org.uk> <644D1F49-BF5D-409D-BFC4-4F7E6E73085B@dsl-only.net> <87lgsk1udz.fsf@news-spur.riddles.org.uk> <9677298B-5A5E-44BF-928E-28DDDADB310A@dsl-only.net> <87h93814rb.fsf@news-spur.riddles.org.uk> <70AE704A-C9FF-4742-88E9-147CD5B77BE8@dsl-only.net>
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Here's another issue that seems to go away as a result of removing the cortex-a7 option: On the cortex-a7 build (world and all packages built with CPUTYPE set): emacs-25.1,3 built with x11 support and running in graphical mode is unstable; crashes randomly either with a mutex assertion (enqueue_mutex complaining that the mutex is already owned) or with SEGV. Running in text mode, it doesn't crash, but hitting pagedown in some buffers (where there are many similar lines) _reliably_ produces incorrect display output in which some characters are displaced by 4: drwxr-xr-x 2 root wheel 512 Feb 18 09:35 isp drwxr-xr-x 2 root wheel 512 Feb 18 09:40 ispfw drwxr-xr-x 2 root wheel 512 20 10:31 iwi et drwxr-xr-x 2 root wheel 1024 Feb 18 09:38 iwm in place of drwxr-xr-x 2 root wheel 512 Feb 18 09:35 isp drwxr-xr-x 2 root wheel 512 Feb 18 09:40 ispfw drwxr-xr-x 2 root wheel 512 Feb 20 10:31 iwi drwxr-xr-x 2 root wheel 1024 Feb 18 09:38 iwm (the "et" is what was displayed at that point on the previous page) (by "reliably" I mean that for given buffer contents and sequence of scroll movements that exhibit the problem, it always happens at the same place in the same way) On the non-CPUTYPE build, I can't reproduce either of the issues (though it's a bit early yet to tell regarding the random-crashes one). Investigation continues... -- Andrew. (Clarke's second law: to discover the limits of the possible, one must venture past them into the realm of the impossible)
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