Re: address space layout of x86_64?
Re: address space layout of x86_64?
- Subject: Re: address space layout of x86_64?
- From: Andrew Gallatin <email@hidden>
- Date: Fri, 1 Dec 2006 14:42:04 -0500 (EST)
Michael Smith writes:
> Andrew Gallatin wrote:
> > What is the address space layout of 64-bit applications
> > on x86_64? Is the address space below 4GB reserved
> > for kernel mappings?
> >
>
> It's my recollection that, on EM64T systems the 64-bit user process
> memory map leaves the virtual range 0-0xffffffff unmapped as a mechanism
> for catching application (and originally kernel) bugs.
Thanks.. for verifying this. Sick hacks, here I come. Sigh..
Drew
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