From owner-freebsd-current Sun Feb 21 7:31:12 1999 Delivered-To: freebsd-current@freebsd.org Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.26.10.9]) by hub.freebsd.org (Postfix) with ESMTP id CCCE7111D2 for ; Sun, 21 Feb 1999 07:30:52 -0800 (PST) (envelope-from bde@godzilla.zeta.org.au) Received: (from bde@localhost) by godzilla.zeta.org.au (8.8.7/8.8.7) id CAA15265; Mon, 22 Feb 1999 02:30:50 +1100 Date: Mon, 22 Feb 1999 02:30:50 +1100 From: Bruce Evans Message-Id: <199902211530.CAA15265@godzilla.zeta.org.au> To: bde@zeta.org.au, green@unixhelp.org Subject: Re: one SysV bug/fix, how many more Cc: current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >> spl is for blocking interrupts. Process-related things shouldn't be and >> mostly aren't touched by interrupts. >But without an spl, couldn't multiple processes do Very Bad Things in a >partially shared proc context? They can do that with or without an spl if they don't lock things properly spl can give improper giant locking as a side effect, but it doesn't necessarily prevent other processes running, since tsleep() isn't locked by spls. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message