Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops | KernelTrap

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

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From: Alan Cox

Subject: Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

Date: Thursday, December 6, 2007 - 5:15 pm

> Changing the delay instruction sequence from the outb to short jumps 
quoted text> might be the safe thing.  But Linus, et al. may have experience with 
> that on other architectures like older Pentiums etc.

Post boot we can use udelay() for this. Earlier I guess we could use
udelay and make sure it starts "safe" before we know the timing.

Alan
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Messages in current thread:

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Wed Dec 5, 4:10 am)

RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD ..., David P. Reed, (Thu Dec 6, 3:38 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Thu Dec 6, 5:15 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Fri Dec 7, 3:44 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Fri Dec 7, 7:50 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Fri Dec 7, 7:54 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Fri Dec 7, 8:43 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Fri Dec 7, 9:04 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Fri Dec 7, 9:28 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Fri Dec 7, 9:31 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Fri Dec 7, 10:19 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Fri Dec 7, 11:42 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Fri Dec 7, 11:45 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Fri Dec 7, 12:25 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Fri Dec 7, 2:45 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Fri Dec 7, 5:21 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Sat Dec 8, 12:25 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Sat Dec 8, 12:50 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Sat Dec 8, 1:26 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Sat Dec 8, 1:47 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Sat Dec 8, 2:04 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Sat Dec 8, 10:04 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Sun Dec 9, 5:54 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Sun Dec 9, 6:22 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Dr. David Alan Gilbert, (Sun Dec 9, 6:41 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Ondrej Zary, (Sun Dec 9, 8:54 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Sun Dec 9, 9:59 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Sun Dec 9, 2:25 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Sun Dec 9, 3:29 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Sun Dec 9, 4:22 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Sun Dec 9, 9:17 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Krzysztof Halasa, (Mon Dec 10, 4:30 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Mon Dec 10, 5:02 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Mon Dec 10, 5:08 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Ondrej Zary, (Mon Dec 10, 11:02 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 5:31 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David Newall, (Mon Dec 10, 6:10 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 6:25 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David Newall, (Mon Dec 10, 6:42 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 6:46 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 6:51 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 10:53 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Mon Dec 10, 10:58 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Mon Dec 10, 11:54 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Paul Rolland, (Tue Dec 11, 12:40 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David Newall, (Tue Dec 11, 5:08 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Tue Dec 11, 6:14 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 6:16 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Paul Rolland, (Tue Dec 11, 6:32 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Tue Dec 11, 6:32 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Tue Dec 11, 6:47 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Tue Dec 11, 6:50 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David Newall, (Tue Dec 11, 6:50 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 7:15 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Tue Dec 11, 7:25 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Lennart Sorensen, (Tue Dec 11, 8:14 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 8:28 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Paul Rolland, (Tue Dec 11, 8:37 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., linux-os (Dick Johnson), (Tue Dec 11, 8:41 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 8:53 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Andi Kleen, (Tue Dec 11, 9:30 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 9:40 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 9:50 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Tue Dec 11, 9:58 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Tue Dec 11, 10:00 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Tue Dec 11, 10:01 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 10:04 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., H. Peter Anvin, (Tue Dec 11, 10:05 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 10:27 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Tue Dec 11, 10:32 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Tue Dec 11, 12:16 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Tue Dec 11, 12:18 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Tue Dec 11, 12:19 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Pavel Machek, (Tue Dec 11, 12:36 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 12:59 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 12:59 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 1:00 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Tue Dec 11, 1:16 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., linux-os (Dick Johnson), (Tue Dec 11, 1:27 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Rene Herman, (Tue Dec 11, 1:34 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Tue Dec 11, 4:56 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., linux-os (Dick Johnson), (Wed Dec 12, 6:11 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Wed Dec 12, 9:12 am)

More info on port 80 symptoms on MCP51 machine., David P. Reed, (Wed Dec 12, 1:07 pm)

Re: More info on port 80 symptoms on MCP51 machine., Rene Herman, (Wed Dec 12, 1:26 pm)

Re: Attitude problems., linux-os (Dick Johnson), (Wed Dec 12, 1:31 pm)

Re: More info on port 80 symptoms on MCP51 machine., David P. Reed, (Wed Dec 12, 1:37 pm)

Re: More info on port 80 symptoms on MCP51 machine., Alan Cox, (Wed Dec 12, 2:01 pm)

Re: More info on port 80 symptoms on MCP51 machine., H. Peter Anvin, (Wed Dec 12, 2:05 pm)

Re: More info on port 80 symptoms on MCP51 machine., Alan Cox, (Wed Dec 12, 2:29 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David Newall, (Wed Dec 12, 3:18 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Wed Dec 12, 4:00 pm)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., Alan Cox, (Thu Dec 13, 6:21 am)

Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern ..., David P. Reed, (Thu Dec 13, 6:50 pm)

Re: Attitude problems., linux-os (Dick Johnson), (Fri Dec 14, 9:01 am)

Re: More info on port 80 symptoms on MCP51 machine., Chuck Ebbert, (Fri Dec 14, 3:05 pm)

Re: More info on port 80 symptoms on MCP51 machine., Rene Herman, (Sat Dec 15, 12:22 am)

RE: More info on port 80 symptoms on MCP51 machine., Allen Martin, (Sat Dec 15, 3:34 pm)

Re: More info on port 80 symptoms on MCP51 machine., H. Peter Anvin, (Sat Dec 15, 3:46 pm)

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