Messages in this thread | | | Date | Fri, 3 May 2019 15:54:26 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH RFC] bpf: Add support for reading user pointers |
| |
On Fri, May 03, 2019 at 09:49:35AM -0400, Joel Fernandes wrote: > In > particular, we learnt with extensive discussions that user/kernel pointers > are not necessarily distinguishable purely based on their address.
This is correct; a number of architectures have a completely separate user and kernel address space. Much like how the old i386 4G:4G patches worked.
| |