Found the answer in ptrace.h -- the answer is no. never mind.
Jeff
On 10/24/15, Jeffrey Merkey <jeffmer...@gmail.com> wrote:
> I am updating the mdb kernel debugger on 4.2.4 and I noticed that
> user_mode_vm has been removed from the kernel sources for detecting
> user space memory addresses for purposes of loading the SS pointer. I
> am using __KERNEL_DS presently.
>
> old code:
>
> if (user_mode_vm(regs))
> {
> sf->tSS = regs->ss;
> sf->tSP = regs->sp;
> } else {
> sf->tSS = __KERNEL_DS;
> sf->tSP = kernel_stack_pointer(regs);
> }
>
> is SS always assumed to be __KERNEL_DS in 4.2.4 for userspace stack
> addresses passed by pt_regs?
>
>
> Thanks
>
> Jeff
>
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