* Ingo Molnar <[email protected]> wrote:
> * eliad lubovsky <[email protected]> wrote:
>
> > I am trying to handle page faults exceptions in the kernel using the
> > task gate mechanism. I succeeded to transfer the execution to my page
> > fault handler using a new TSS and updates to the GDT and IDT tables
> > (similar to the double fault mechanism in 2.6). After handling the
> > fault and allocating the physical page I use the iret instruction to
> > switch back to the previous task. The problem is that I got a double
> > fault with the same address that cause the fault (although the
> > physical page is allocated and mapped). Any clues?
>
> are you clearing the 'nested task' (NT) flag of the new TSS once you
> have switched to it?
correction - i meant the 'busy' bit in the TSS descriptor. It's being
set by TSS-switch operations, and needs to be cleared.
Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]