From mboxrd@z Thu Jan  1 00:00:00 1970
From: ality@pbrane.org (Anthony Martin)
Date: Fri, 18 Mar 2011 03:31:31 -0700
Subject: [9fans] off by one in the pc kaddr
Message-ID: <20110318103131.GA9432@dinah>
Topicbox-Message-UUID: bcaafe56-ead6-11e9-9d60-3106f5b1d025

I've read through the MMU code more than
a few times and never noticed this.  Who
reads past tmpunmap anyways? ;)

  Anthony

diff -c /sys/src/9/pc/mmu.c /tmp/mmu.c
/sys/src/9/pc/mmu.c:934,940 - /tmp/mmu.c:934,940
  void*
  kaddr(ulong pa)
  {
- 	if(pa > (ulong)-KZERO)
+ 	if(pa >= (ulong)-KZERO)
  		panic("kaddr: pa=%#.8lux", pa);
  	return (void*)(pa+KZERO);
  }