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Date: Fri, 15 Sep 1995 16:49:25 -0700
From: David Greenman <davidg>
Message-Id: <199509152349.QAA16172@freefall.freebsd.org>
To: CVS-commiters, cvs-sys
Subject: cvs commit: src/sys/i386/i386 mem.c
Sender: owner-cvs-sys@FreeBSD.org
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davidg      95/09/15 16:49:24

  Modified:    sys/i386/i386  mem.c
  Log:
  Check for page being resident when doing I/O with /dev/kmem and return
  EFAULT if it is not resident. This prevents the system from manufacturing
  a zero-fill page for unused but allocated areas of the kernel's VM. This
  should fix the "CMAP busy" panic that some people saw during system
  startup.