coherence-problem on the mapped memory buffer

2010-07-29 Thread Alexander Fiveg
Hello hackers, while working on the "ringmap"-project I've faced a problem of "no coherency in the memory regions mapped from kernel into the user-space". Details: While integrating ringmap with the ixgbe-driver, I've made some changes to the ixgbe: 1. The mbufs for received packets will be

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Andriy Gapon
on 29/07/2010 17:13 Alexander Fiveg said the following: > P.S. Details about hardware and used software: > 1. /var/run/dmesg.boot : > ... > CPU: Dual Core AMD Opteron(tm) Processor 865 (1800.01-MHz 686-class CPU) > Origin = "AuthenticAMD" Id = 0x20f10 Family = f Model = 21 Stepping = 0 > >

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Alexander Fiveg
On Thursday 29 July 2010 18:13:23 Andriy Gapon wrote: > on 29/07/2010 17:13 Alexander Fiveg said the following: > > P.S. Details about hardware and used software: > > 1. /var/run/dmesg.boot : > > ... > > CPU: Dual Core AMD Opteron(tm) Processor 865 (1800.01-MHz 686-class CPU) > > Origin = "Authen

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Andriy Gapon
on 29/07/2010 19:13 Andriy Gapon said the following: > on 29/07/2010 17:13 Alexander Fiveg said the following: >> P.S. Details about hardware and used software: >> 1. /var/run/dmesg.boot : >> ... >> CPU: Dual Core AMD Opteron(tm) Processor 865 (1800.01-MHz 686-class CPU) >> Origin = "AuthenticAMD

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Andriy Gapon
on 29/07/2010 19:45 Alexander Fiveg said the following: > On Thursday 29 July 2010 18:13:23 Andriy Gapon wrote: >> on 29/07/2010 17:13 Alexander Fiveg said the following: >>> P.S. Details about hardware and used software: >>> 1. /var/run/dmesg.boot : >>> ... >>> CPU: Dual Core AMD Opteron(tm) Proce

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Andriy Gapon
on 29/07/2010 23:02 Sergey Babkin said the following: > Jul 29, 2010 12:58:07 PM, a...@icyb.net.ua wrote: > >> on 29/07/2010 19:13 Andriy Gapon said the following: >>> on 29/07/2010 17:13 Alexander Fiveg said the following: >> In fact I have a suspicion that the problem might have to do with multi

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Alexander Fiveg
On Thursday 29 July 2010 22:16:24 Andriy Gapon wrote: > on 29/07/2010 23:02 Sergey Babkin said the following: > > Jul 29, 2010 12:58:07 PM, a...@icyb.net.ua wrote: > >> on 29/07/2010 19:13 Andriy Gapon said the following: > >>> on 29/07/2010 17:13 Alexander Fiveg said the following: > >> > >> In fa

Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Andriy Gapon
on 30/07/2010 00:41 Alexander Fiveg said the following: > Thanks a lot for your answers. But i am afraid i do not have enough > experience to solve these tasks. Could you please provide me with helpful > information how to: > - get access to the pages associated with a certain memory-buffer ?

Re: Re: coherence-problem on the mapped memory buffer

2010-07-29 Thread Sergey Babkin
Jul 29, 2010 12:58:07 PM, a...@icyb.net.ua wrote: >on 29/07/2010 19:13 Andriy Gapon said the following: >> on 29/07/2010 17:13 Alexander Fiveg said the following: >In fact I have a suspicion that the problem might have to do with multiple >mappings of the shared pages, but far from sure... >Take a