develop driver to read cpu MSRs
in [Device Drivers]
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From: Oniel... on 26 Jan 2010 18:10 Hello, need a starting point to develop driver to access ring 0 to read/write MSR. I have VS 2008 and WDK 6001.18002. I am having difficulty finding a starting point. This would be my first attempt to develop a driver. Any information would be greatly appreciated to assist me with this project. Thanks...
From: Maxim S. Shatskih on 26 Jan 2010 20:08 KMDF WDK samples. -- Maxim S. Shatskih Windows DDK MVP maxim(a)storagecraft.com http://www.storagecraft.com "Oniel..." <Oniel(a)discussions.microsoft.com> wrote in message news:048B3A82-C68A-4937-89C9-DF16488214E9(a)microsoft.com... > Hello, need a starting point to develop driver to access ring 0 to read/write > MSR. I have VS 2008 and WDK 6001.18002. I am having difficulty finding a > starting point. This would be my first attempt to develop a driver. Any > information would be greatly appreciated to assist me with this project. > Thanks...
From: alberto on 27 Jan 2010 13:14 Depending on what the driver will be used for, I would probably just write a legacy wdm driver because of the level of user-level control it gives me. Or maybe I might lift it from Walter Oney's book, he has a minimal driver in there, just add the code to read and write MSRs and interface it to a couple of IoControls. Or, even simpler, maybe write a tiny Linux driver and run it under Hyper-V, VMWare or VirtualBox if you really want it to work in a Windows environment. You don't need much more than the few lines of code in Rubini's book's first driver, and the virtualizers are free. Alberto. On Jan 26, 6:10 pm, Oniel... <On...(a)discussions.microsoft.com> wrote: > Hello, need a starting point to develop driver to access ring 0 to read/write > MSR. I have VS 2008 and WDK 6001.18002. I am having difficulty finding a > starting point. This would be my first attempt to develop a driver. Any > information would be greatly appreciated to assist me with this project. > Thanks...
From: Don Burn on 27 Jan 2010 13:24 Since you cannot protect against others using the registers you have a small problem. Accepting that just use a legacy driver since there is no need to reserve hardware. Take a look at the example in src\general\event\wdm for a simple legacy driver to start with. -- Don Burn (MVP, Windows DKD) Windows Filesystem and Driver Consulting Website: http://www.windrvr.com Blog: http://msmvps.com/blogs/WinDrvr Remove StopSpam to reply "Oniel..." <Oniel(a)discussions.microsoft.com> wrote in message news:048B3A82-C68A-4937-89C9-DF16488214E9(a)microsoft.com... > Hello, need a starting point to develop driver to access ring 0 to > read/write > MSR. I have VS 2008 and WDK 6001.18002. I am having difficulty finding a > starting point. This would be my first attempt to develop a driver. Any > information would be greatly appreciated to assist me with this project. > Thanks... > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 4808 (20100126) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > __________ Information from ESET NOD32 Antivirus, version of virus signature database 4810 (20100127) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
From: Kalle Olavi Niemitalo on 27 Jan 2010 17:11
alberto <amoreira(a)ieee.org> writes: > Or, even simpler, maybe write a tiny Linux driver and run it under > Hyper-V, VMWare or VirtualBox if you really want it to work in a > Windows environment. Linux 2.6 has such a driver already; see arch/x86/kernel/msr.c. It provides both read and write access. I don't know though whether those virtualizers pass the MSR accesses through to the actual CPU. |