Messages in this thread | | | Date | Mon, 10 Dec 2007 16:31:08 -0800 | From | "H. Peter Anvin" <> | Subject | Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops |
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Rene Herman wrote: > > By the way, David, it would be interesting if you could test 0xed. If > your problem is some piece of hardware getting upset at LPC bus aborts > it's not going to matter and we'd know an outb delay is just not an > option on your system at least. You said you could quickly reproduce the > problem with port 0x80? >
I tried 0xED for a few versions (1.31-1.37) of SYSLINUX. It broke on a lot of hardware (Phoenix BIOS uses 0xED by default, but BIOSes don't have to work on arbitrary hardware.)
-hpa
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