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Revision 3c92c2ba33cd7d666c5f83cc32aa590e794e91b0 authored by Andi Kleen on 10 October 2005, 23:28:33 UTC, committed by Linus Torvalds on 10 October 2005, 23:34:09 UTC 
[PATCH] i386: Don't discard upper 32bits of HWCR on K8
 
Need to use long long, not long when RMWing a MSR. I think
it's harmless right now, but still should be better fixed
if AMD adds any bits in the upper 32bit of HWCR.

Bug was introduced with the TLB flush filter fix for i386

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 421c7ce
Raw File
extract-ikconfig 
#!/bin/sh
# extracts .config info from a [b]zImage file
# uses: binoffset (new), dd, zcat, strings, grep
# $arg1 is [b]zImage filename

binoffset="./scripts/binoffset"

IKCFG_ST="0x49 0x4b 0x43 0x46 0x47 0x5f 0x53 0x54"
IKCFG_ED="0x49 0x4b 0x43 0x46 0x47 0x5f 0x45 0x44"
function dump_config {
    typeset file="$1"

    start=`$binoffset $file $IKCFG_ST 2>/dev/null`
    [ "$?" != "0" ] && start="-1"
    if [ "$start" -eq "-1" ]; then
	return
    fi
    end=`$binoffset $file $IKCFG_ED 2>/dev/null`

    let start="$start + 8"
    let size="$end - $start"

    head --bytes="$end" "$file" | tail --bytes="$size" | zcat

    clean_up
    exit 0
}


usage()
{
	echo "  usage: extract-ikconfig [b]zImage_filename"
}

clean_up()
{
	if [ "$TMPFILE" != "" ]; then
		rm -f $TMPFILE
	fi
}

if [ $# -lt 1 ]
then
	usage
	exit 1
fi

TMPFILE="/tmp/ikconfig-$$"
image="$1"

# vmlinux: Attempt to dump the configuration from the file directly
dump_config "$image"

GZHDR1="0x1f 0x8b 0x08 0x00"
GZHDR2="0x1f 0x8b 0x08 0x08"

# vmlinux.gz: Check for a compressed images
off=`$binoffset "$image" $GZHDR1 2>/dev/null`
[ "$?" != "0" ] && off="-1"
if [ "$off" -eq "-1" ]; then
	off=`$binoffset "$image" $GZHDR2 2>/dev/null`
	[ "$?" != "0" ] && off="-1"
fi
if [ "$off" -eq "0" ]; then
	zcat <"$image" >"$TMPFILE"
	dump_config "$TMPFILE"
elif [ "$off" -ne "-1" ]; then
	(dd ibs="$off" skip=1 count=0 && dd bs=512k) <"$image" 2>/dev/null | \
		zcat >"$TMPFILE"
	dump_config "$TMPFILE"
fi

echo "ERROR: Unable to extract kernel configuration information."
echo "       This kernel image may not have the config info."

clean_up
exit 1
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