Date: Mon, 7 Aug 2000 15:50:02 -0700 (PDT) From: Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/11287: rfork(RFMEM...) doesn't share LDTs set byi386_set_ldt, breaking wine Message-ID: <200008072250.PAA15907@freefall.freebsd.org>
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The following reply was made to PR kern/11287; it has been noted by GNATS. From: Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> To: freebsd-gnats-submit@freebsd.org, freebsd-ports@freebsd.org Cc: =?ISO-8859-1?Q?J=FCrgen_Lock?= <nox@jelal.kn-bremen.de>, Luoqi Chen <luoqi@chen.ml.org> Subject: Re: kern/11287: rfork(RFMEM...) doesn't share LDTs set byi386_set_ldt, breaking wine Date: Tue, 8 Aug 2000 00:47:22 +0200 (CEST) Unfortunately, I have not heard back from Jürgen or Luoqi, so I'm going to analyse this piece by piece. Please remove ports/emulators/wine/files/patch-3.3-sys-ldtshare and install the patch at the end of this message. (patch...ldtshare has been part of at least two FreeBSD releases now: 4.0, and 4.1, and it was not necessary for most Wine applications I tried, so I don't see a point in keeping it.) Gerald Index: README.patch =================================================================== RCS file: /sw/FreeBSD/CVSUP/ports/emulators/wine/files/README.patch,v retrieving revision 1.3 diff -u -r1.3 README.patch --- README.patch 2000/02/08 09:26:18 1.3 +++ README.patch 2000/08/07 22:40:58 @@ -3,11 +3,6 @@ They unfortunately didn't make it into the base distribution in time for the 3.3 release code freeze... -patch-3.3-sys-ldtshare: -make kernel threads (rfork(), which wine uses) share one LDT instead of -each having its own. this fixes the same problem that wine also had on -linux kernels before 2.2. - patch-3.3-sys-sigtrap: stop wine's SIGTRAP handler from being called in the sigreturn syscall, causing problems for wine's internal debugger. (it would still @@ -29,7 +24,6 @@ Apply as follows: - (cd /usr/src/sys && patch ) <patch-3.3-sys-ldtshare (cd /usr/src/sys && patch ) <patch-3.3-sys-sigtrap And if you don't already have it: @@ -39,27 +33,6 @@ then build a new kernel. (don't forget to include the options USER_LDT, SYSVSHM, SYSVSEM, and SYSVMSG, wine needs these.) -A note about local patches and ctm, cvsup and friends... -(if you don't know what those are good for see for example -http://www.freebsd.org/handbook/stable.html) -ctm cannot deal with local patches (unless you use it to mirror -the cvs tree of course, instead of the sources directly), with -cvsup i'm not sure but in any case the workaround is simple: use -patch -R to un-apply any local patches before the update (feeding -it the patches again as above on stdin), then when the update is -finished apply them again. Should they fail on the updated sources -(and you cannot fix it yourself), look for new versions of the -patches at the place where you got them, or in this case you -can also look in my current wine port tree at -http://www.jelal.kn-bremen.de/freebsd/ports/emulators/wine/files/ - -current users: -A LDT patch for -current is at http://people.FreeBSD.org/~luoqi/ -(well in a recent posting on the -current list, -http://www.freebsd.org/cgi/mid.cgi?db=&id=199911150745.CAA27884@lor.watermarkgroup.com -he said that version is outdated, seems you have to mail him to -get a current one), the sigtrap patch looks like it could also -apply to -current but i haven't tried. And the fs/gs patch of course -already is in -current. -Late note: the LDT sharing fix just seems to have been committed now... -(to -current that is.) +The sigtrap patch looks like it could also apply to -current but i haven't +tried. And the fs/gs patch of course already is in -current. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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