RE: possible CPU bug and request for Intel contacts

>-Original Message- >From: Ingo Molnar [mailto:[EMAIL PROTECTED] >Sent: Sunday, February 13, 2005 12:10 PM >To: Seth, Rohit >Cc: Kirill Korotaev; Linus Torvalds; Saxena, Sunil; Pallipadi, >Venkatesh; Andrey Savochkin; linux-kernel@vger.kernel.org >Subject: Re:

Re: possible CPU bug and request for Intel contacts

* Seth, Rohit <[EMAIL PROTECTED]> wrote: > On a little different note, while running the 4G-4G kernel on our > machine, we saw occasional hangs. Those are root caused to the fact > that this kernel was first chaging the stack pointer from virtual > stack to kernel and then changing the CR3 to th

RE: possible CPU bug and request for Intel contacts

Kirill Korotaev wrote on Tuesday, January 25, 2005 6:12 AM: > Hello Rohit, > >>> BTW, can you explain why making pages non-global is the cure? Is it >>> safe workaround for this bug? >> There is a boundary condition that can have non-global pages >> containing the CR3

Re: possible CPU bug and request for Intel contacts

Hello Rohit, BTW, can you explain why making pages non-global is the cure? Is it safe workaround for this bug? There is a boundary condition that can have non-global pages containing the CR3 load to also hit this issue on affected PIII. Though for this to happen, mov to cr3 has to be the very last

RE: possible CPU bug and request for Intel contacts

Kirill Korotaev wrote on Monday, January 24, 2005 1:51 AM: > Hello Rohit, > >> Thanks for sending the detailed information. Based on our experiments >> and analysis, we believe at this point that this is a known E80 issue >> mentioned in the PIII spec update at this loc

RE: possible CPU bug and request for Intel contacts

Pavel Machek wrote on Saturday, January 22, 2005 2:03 AM: > Hi! > >> Here are the details about CPU bug I mentioned in my previous post. >> Though it turned out later that it happens on P-III systems only I >> still hope it can be of interest. > > What about Pentium-M?

Re: possible CPU bug and request for Intel contacts

Hello Rohit, Thanks for sending the detailed information. Based on our experiments and analysis, we believe at this point that this is a known E80 issue mentioned in the PIII spec update at this location (http://www.intel.com/design/pentiumiii/specupdt/24445351.pdf) Could you please try one of the

Re: possible CPU bug and request for Intel contacts

Hi! > Here are the details about CPU bug I mentioned in my previous post. > Though it turned out later that it happens on P-III systems only I still > hope it can be of interest. What about Pentium-M? They are based on P-III and are certainly *very* interesting.

RE: possible CPU bug and request for Intel contacts

Hello Kirill, Thanks for sending the detailed information. Based on our experiments and analysis, we believe at this point that this is a known E80 issue mentioned in the PIII spec update at this location (http://www.intel.com/design/pentiumiii/specupdt/24445351.pdf) Could you please try one of t

Re: possible CPU bug and request for Intel contacts

Hello, Here are the details about CPU bug I mentioned in my previous post. Though it turned out later that it happens on P-III systems only I still hope it can be of interest. Brief description ~ This issue was found by Vasily Averin ([EMAIL PROTECTED]) when playing with uselib s