Author: pfg Date: Sat Dec 21 02:40:40 2019 New Revision: 355968 URL: https://svnweb.freebsd.org/changeset/base/355968
Log: MFC r355828: Double the size of ARG_MAX on LP64 platforms. As modern software keeps growing in size, we get requests to update the value of ARG_MAX in order to link the resulting object files. Other OSs have much higher values but increasiong ARG_MAX has a multiplied effect on KVA, so just bumping this value is dangerous in some archs like ARM32 that can exhaust KVA rather easily. While it would be better to have a unique value for all archs, other OSs (Illumos in particular) can have different ARG_MAX limits depending on the platform, For now we want to be really conservative so we are avoidng the change on ILP32 and in the alternative case we only double it since that seems to work well enough for recent Code Aster. Bump the _FreeBSD_version for this change. PR: 241710 Modified: stable/12/sys/sys/param.h stable/12/sys/sys/syslimits.h Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/sys/param.h ============================================================================== --- stable/12/sys/sys/param.h Fri Dec 20 23:08:10 2019 (r355967) +++ stable/12/sys/sys/param.h Sat Dec 21 02:40:40 2019 (r355968) @@ -60,7 +60,7 @@ * in the range 5 to 9. */ #undef __FreeBSD_version -#define __FreeBSD_version 1201505 /* Master, propagated to newvers */ +#define __FreeBSD_version 1201506 /* Master, propagated to newvers */ /* * __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD, Modified: stable/12/sys/sys/syslimits.h ============================================================================== --- stable/12/sys/sys/syslimits.h Fri Dec 20 23:08:10 2019 (r355967) +++ stable/12/sys/sys/syslimits.h Sat Dec 21 02:40:40 2019 (r355968) @@ -48,7 +48,11 @@ * Do not add any new variables here. (See the comment at the end of * the file for why.) */ -#define ARG_MAX 262144 /* max bytes for an exec function */ +#ifndef __ILP32__ +#define ARG_MAX (2 * 256 * 1024) /* max bytes for an exec function */ +#else +#define ARG_MAX (256 * 1024) /* max bytes for KVA-starved archs */ +#endif #ifndef CHILD_MAX #define CHILD_MAX 40 /* max simultaneous processes */ #endif _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
