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#1
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Who is PAT?
I am examining the system log for one of my applications and it states
"PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. Mark. -- Mark Hobley Linux User: #370818 http://markhobley.yi.org/ |
#2
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Who is PAT?
On Sun, 18 Jan 2009 15:08:12 +0000, Mark Hobley wrote:
I am examining the system log for one of my applications and it states "PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. Assuming your application is some kind of audio program..., it's probably this: http://www.birds-eye.net/definition/...?id=1162798192 P.S. - Know how long it took me to find that with Google? About 20 seconds. Might want to try it for yourself sometime. -- "Ubuntu" -- an African word, meaning "Slackware is too hard for me". The Usenet Improvement Project: http://improve-usenet.org Ahhhhhhh!: http://brandybuck.site40.net/pics/relieve.jpg |
#3
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Who is PAT?
Mark Hobley wrote:
I am examining the system log for one of my applications and it states "PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. You don't mean PAE, Physical Address Extension, do you? Bye, Jojo |
#4
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Who is PAT?
In comp.os.linux.misc Dan C wrote:
P.S. - Know how long it took me to find that with Google? About 20 seconds. Might want to try it for yourself sometime. Yeah I found the same definition also. It's don't think it is the right definition in this contex, but maybe you are right. I thought that maybe it meant "Page Allocation Table", which I found after a lot more googling. Anyhow, whether it is a "Page Allocation Table", a "Program Association Table", or something else, I need to know which processors have this and which do not. I think that some of my computers have it, and others do not, because not all of my computers have the same processor, even though they are all supposed to be compatible. I don't seem to be able to find a list of processors that do and do not support this. Does an 80486 have a PAT? What about a traditional Pentium 120? What about a Pentium MMX? Cyrix 686? AMD K5? AMD K6? I looked both of my assembly langauge reference books, and there is no reference to either a PAT, a Page Allocation Table,or a Program Association Table. I am trying to integrate a device driver into a kernel that will be used across a wide range of machines, and I need more information about this PAT. Mark. -- Mark Hobley Linux User: #370818 http://markhobley.yi.org/ |
#5
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Who is PAT?
Mark Hobley wrote:
I am examining the system log for one of my applications and it states "PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. Page Attribute Table. It redefines the original PWD and PCT bits in the page tables to allow for more fine-grained control over caching (much like the MTTRs but on a page-by-page basis). I don't know exactly when it was introduced, probably Pentium 3 or so. It's documented (of course) in the System Programming Guide[1], section 10.12. [1] http://download.intel.com/design/pro...als/253668.pdf -- Huibert "The Commercial Channel! All commercials all the time. An eternity of useless products to rot your skeevy little mind, forever!" -- Mike the TV (Reboot) |
#6
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Who is PAT?
I demand that Huibert Bol may or may not have written...
Mark Hobley wrote: I am examining the system log for one of my applications and it states "PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. Page Attribute Table. It redefines the original PWD and PCT bits in the page tables to allow for more fine-grained control over caching (much like the MTRRs but on a page-by-page basis). I don't know exactly when it was introduced, probably Pentium 3 or so. Pentium II, at the latest; I have two here, at least one of which has hardware bugs affecting PAT which the Linux kernel knows about, so it's stuck with using plain MTRRs. I've not tried yet on the other, but I will when I next upgrade its kernel. [snip] -- | Darren Salt | linux or ds at | nr. Ashington, | Toon | RISC OS, Linux | youmustbejoking,demon,co,uk | Northumberland | Army | + Output *more* particulate pollutants. BUFFER AGAINST GLOBAL WARMING. You plan things that you do not even attempt because of your extreme caution. |
#7
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Who is PAT?
Mark Hobley wrote: I am examining the system log for one of my applications and it states "PAT not supported by CPU". Does anyone know what PAT is? My computer is IBM compatible and has an 80486 compatible processor. I am using a Linux derivative kernel. Mark. -- Mark Hobley Linux User: #370818 http://markhobley.yi.org/ Performance Acceleration Technology. Something which came with Intel 875 chipset. |
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