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Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
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From:
Rene Herman <rene.herman@...>
To: H. Peter Anvin <hpa@...>
Cc: David Newall <david@...>, Krzysztof Halasa <khc@...>, Pavel Machek <pavel@...>, Andi Kleen <andi@...>, Alan Cox <alan@...>, David P. Reed <dpreed@...>, <linux-kernel@...>, Thomas Gleixner <tglx@...>, Ingo Molnar <mingo@...>
Subject:
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
Date: Tuesday, December 11, 2007 - 2:54 am
On 11-12-07 02:25, H. Peter Anvin wrote:
quoted text
> David Newall wrote: >> Where did the 8us delay come from? The documentation and source is >> careful not to say how long the delay is. Would changing it to, say >> 1us, be technically wrong? Is code that requires 8us correct? > > I think a single ISA bus transaction is 1 µs, so two of them back to > back should be 2 µs, not 8 µs...
Sigh. And now where do these _two_ transactions come from? (and yes, see Alan's folowups, a transaction on a spec bus is 1 us). Rene. --
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Messages in current thread:
RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64...
, David P. Reed
, (Thu Dec 6, 6:38 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Fri Dec 7, 6:44 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Fri Dec 7, 12:04 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Sun Dec 9, 8:54 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Sun Dec 9, 12:59 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Sun Dec 9, 5:25 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Mon Dec 10, 12:17 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Krzysztof Halasa
, (Mon Dec 10, 7:30 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David Newall
, (Mon Dec 10, 9:10 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Mon Dec 10, 9:25 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 2:54 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Tue Dec 11, 1:01 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David Newall
, (Mon Dec 10, 9:42 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Tue Dec 11, 9:14 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Tue Dec 11, 9:32 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Tue Dec 11, 9:47 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Tue Dec 11, 9:50 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Ingo Molnar
, (Fri Dec 14, 9:33 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Paul Rolland
, (Tue Dec 11, 3:40 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 5:50 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David Newall
, (Tue Dec 11, 8:08 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 9:16 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David Newall
, (Tue Dec 11, 9:50 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, linux-os (Dick Johnson)
, (Tue Dec 11, 11:41 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Tue Dec 11, 12:30 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 12:50 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Tue Dec 11, 3:16 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 4:00 pm)
More info on port 80 symptoms on MCP51 machine.
, David P. Reed
, (Wed Dec 12, 4:07 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, Rene Herman
, (Wed Dec 12, 4:26 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, Rene Herman
, (Wed Dec 12, 4:58 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, H. Peter Anvin
, (Wed Dec 12, 5:05 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, Chuck Ebbert
, (Fri Dec 14, 6:05 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, Rene Herman
, (Sat Dec 15, 3:22 am)
Re: More info on port 80 symptoms on MCP51 machine.
, Alan Cox
, (Wed Dec 12, 5:01 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, H. Peter Anvin
, (Wed Dec 12, 5:12 pm)
RE: More info on port 80 symptoms on MCP51 machine.
, Allen Martin
, (Sat Dec 15, 6:34 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, H. Peter Anvin
, (Sat Dec 15, 6:46 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, Alan Cox
, (Wed Dec 12, 5:29 pm)
Re: More info on port 80 symptoms on MCP51 machine.
, David P. Reed
, (Wed Dec 12, 4:37 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 4:00 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 3:59 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 3:59 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Tue Dec 11, 1:00 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 1:04 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Tue Dec 11, 3:18 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 1:27 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Tue Dec 11, 10:25 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David Newall
, (Wed Dec 12, 6:18 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Wed Dec 12, 7:00 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Thu Dec 13, 9:13 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Thu Dec 13, 9:21 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Thu Dec 13, 9:50 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Fri Dec 14, 11:16 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 10:14 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Paul Rolland
, (Tue Dec 11, 9:32 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 10:15 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 11:28 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, John Stoffel
, (Tue Dec 11, 12:32 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 12:40 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Paul Rolland
, (Tue Dec 11, 11:37 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 11:53 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Tue Dec 11, 12:58 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Tue Dec 11, 1:32 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Tue Dec 11, 3:19 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, linux-os (Dick Johnson)
, (Tue Dec 11, 4:27 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Tue Dec 11, 7:56 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, linux-os (Dick Johnson)
, (Wed Dec 12, 9:11 am)
Attitude problems.
, David P. Reed
, (Wed Dec 12, 3:42 pm)
Re: Attitude problems.
, linux-os (Dick Johnson)
, (Wed Dec 12, 4:31 pm)
Re: Attitude problems.
, linux-os (Dick Johnson)
, (Fri Dec 14, 12:01 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Wed Dec 12, 12:12 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Ingo Molnar
, (Fri Dec 14, 10:33 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 4:34 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Tue Dec 11, 5:03 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Tue Dec 11, 4:16 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Tue Dec 11, 3:36 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Tue Dec 11, 1:05 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Tue Dec 11, 1:01 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Mon Dec 10, 9:51 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Mon Dec 10, 9:46 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Ondrej Zary
, (Mon Dec 10, 2:02 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Mon Dec 10, 8:08 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Sun Dec 9, 6:29 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Sun Dec 9, 7:22 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Mon Dec 10, 8:02 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Ondrej Zary
, (Sun Dec 9, 11:54 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Dr. David Alan Gilbert
, (Sun Dec 9, 9:41 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Sat Dec 8, 3:25 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Lennart Sorensen
, (Tue Dec 11, 11:14 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Sun Dec 9, 9:22 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Sun Dec 9, 1:04 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Sat Dec 8, 4:26 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Tue Dec 11, 1:58 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Sat Dec 8, 3:50 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Sat Dec 8, 4:47 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Sat Dec 8, 5:04 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Fri Dec 7, 12:31 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Fri Dec 7, 1:19 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Fri Dec 7, 2:45 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Fri Dec 7, 2:42 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Fri Dec 7, 3:25 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Fri Dec 7, 5:45 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, David P. Reed
, (Fri Dec 7, 10:50 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Pavel Machek
, (Wed Dec 5, 7:10 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Fri Dec 7, 8:21 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Andi Kleen
, (Fri Dec 7, 10:54 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Tue Dec 11, 1:53 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Fri Dec 7, 11:43 am)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Rene Herman
, (Fri Dec 7, 12:28 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, H. Peter Anvin
, (Mon Dec 10, 8:31 pm)
Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern A...
, Alan Cox
, (Thu Dec 6, 8:15 pm)
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