On Tue, Nov 17 2020 at 09:42, Alexandre Chartre wrote:
> On 11/17/20 12:06 AM, Andy Lutomirski wrote:
> The PTI stack does have guard pages because it maps only a part of the task
> stack into the user page-table, so pages around the PTI stack are not mapped
> into the user-pagetable (the page
On Tue, Nov 17, 2020 at 12:42 AM Alexandre Chartre
wrote:
>
>
> On 11/17/20 12:06 AM, Andy Lutomirski wrote:
> > On Mon, Nov 16, 2020 at 12:18 PM Alexandre Chartre
> > wrote:
> >>
> >>
> >> On 11/16/20 8:48 PM, Andy Lutomirski wrote:
> >>> On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
> >>>
On 11/17/20 12:06 AM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 12:18 PM Alexandre Chartre
wrote:
On 11/16/20 8:48 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
wrote:
Extend PTI user mappings so that more kernel entry code can be executed
with the
On Mon, Nov 16, 2020 at 12:18 PM Alexandre Chartre
wrote:
>
>
> On 11/16/20 8:48 PM, Andy Lutomirski wrote:
> > On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
> > wrote:
> >>
> >> Extend PTI user mappings so that more kernel entry code can be executed
> >> with the user page-table. To do so,
On 11/16/20 8:48 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
wrote:
Extend PTI user mappings so that more kernel entry code can be executed
with the user page-table. To do so, we need to map syscall and interrupt
entry code, per cpu offsets
On Mon, Nov 16, 2020 at 6:49 AM Alexandre Chartre
wrote:
>
> Extend PTI user mappings so that more kernel entry code can be executed
> with the user page-table. To do so, we need to map syscall and interrupt
> entry code, per cpu offsets (__per_cpu_offset, which is used some in
> entry code), the
Extend PTI user mappings so that more kernel entry code can be executed
with the user page-table. To do so, we need to map syscall and interrupt
entry code, per cpu offsets (__per_cpu_offset, which is used some in
entry code), the stack canary, and the PTI stack (which is defined per
task).
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