Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.


* Rene Herman <rene.herman@xxxxxxxxx> wrote:

--- a/init/main.c
+++ b/init/main.c
@@ -229,10 +229,9 @@ static int __init obsolete_checksetup(char *line)
}

/*
- * This should be approx 2 Bo*oMips to start (note initial shift), and will
- * still work even if initially too large, it will just take slightly longer
+ * Initial value roughly corresponds to a 1 GHz CPU
*/
-unsigned long loops_per_jiffy = (1<<12);
+unsigned long loops_per_jiffy = 1000000000 / HZ;

EXPORT_SYMBOL(loops_per_jiffy);

this is a factor of ~2400 increase - this will take an eternity to boot
on any older CPU.

Ingo
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