On Wed, Aug 23, 2006 at 07:39:22PM +0530, Rajat Jain wrote: > Hi, > > I'm trying to read & display the GDT contents in kernel space. Is this > permissible? I used the "sgdt" assembly instruction to load the GDT > register, and found out the address & length of GDT from that (It is > "0000c248") . Is this the physical or the virtual address? I quickly looked at the Intel Instruction Set Reference for SGDT, and it says that the stored value is 6 bytes long. "The 16-bit limit field of the register is stored in the low 2 bytes of the memory location and the 32-bit base address is stored in the high 4 bytes." 0xc248xxxx looks like a valid address, so my guess is that you are off by 2 bytes :) Hope this helps, Josef "Jeff" Sipek. -- Once you have their hardware. Never give it back. (The First Rule of Hardware Acquisition) -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
