Re: signal 8 (floating point exception) upon resume
Jung-uk Kim <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2014-03-04 11:24:04 -0500, John Baldwin wrote: > On Monday, March 03, 2014 6:49:08 pm Adrian Chadd wrote: >> I'll try this soon. >> >> I had it fail back to newcons, rather than Xorg normally dying >> without restoring state. It wouldn't let me spawn a shell. >> Logging in worked fine, but normal shell exec would eventually >> and quickly lead to failure, dropping me back to the login >> prompt. > > If you have set CPUTYPE in /etc/src.conf such that your userland > binaries are built with SSE, etc. then I expect most things to > break because the FPU is in a funky state without this patch. I > suspect if you don't set CPUTYPE so that your userland binaries do > not use the FPU, you can probably resume just fine without this > fix. > >> -a >> >> >> On 3 March 2014 11:11, John Baldwin <[email protected]> wrote: >>> On Friday, February 28, 2014 9:00:57 pm Adrian Chadd wrote: >>>> On 28 February 2014 15:35, Adrian Chadd <[email protected]> >>>> wrote: >>>>> ... how'd this ever work in the past then? >>>>> >>>> >>>> .. and I've submitted it as a PR: >>>> >>>> kern/187152 >>> >>> Complete stab in the dark (not compile tested) here: >>> >>> http://www.FreeBSD.org/~jhb/patches/i386_fpu_suspend.patch The patch for sys/amd64/amd64/cpu_switch.S is committed: http://svnweb.freebsd.org/changeset/base/262746 i386 patches may be reviewed by the original author (CC'ed). Jung-uk Kim -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) iQEcBAEBAgAGBQJTFi3RAAoJEHyflib82/FGnboH/3qrAp+Eq/0eebEP/9wU0Ke/ y4y4yvw9nDVexKZ+c5VuTxyWvK9O0w2b+r3f5kuHWferOm22NaJCctt3E/OA5Ly2 1p3ZPvqD5cRZfkdh68AwEeJv93lg84VMSUqNUfS9rsrIU+WpHpPR46sdLpq5KxSP cY2522npmoPrwk+PaTJS4uBQeaX/3vnj5996zxavwVqwlYyR+Zqgi6FhGj+F2RJ1 Ry+9icyNx/8lUfRTLCPsCBRjlUKUk/p/8bfbQK4mSef5Gd8ZAiqdyKqgdMBUYhNA ZplkpijJjvlIIc0dYSwg8gMKmaB6amgw/LJGQit9nTkBU2bOd6L05f1dCpYAxDE= =x0sS -----END PGP SIGNATURE----- _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"