On Thu, Nov 19 2020 at 20:55, Alexandre Chartre wrote:
> On 11/19/20 8:10 PM, Thomas Gleixner wrote:
> Sorry I mixed up a few thing; I got confused with my own code which is not a
> good sign...
>
> It's not sleeping with the user page-table which, as you mentioned, doesn't
> make sense, it's sleep
On 11/19/20 8:10 PM, Thomas Gleixner wrote:
On Mon, Nov 16 2020 at 19:10, Alexandre Chartre wrote:
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
When executing more code in the kernel, we are likely to reach a point
where we need to sle
On Mon, Nov 16 2020 at 19:10, Alexandre Chartre wrote:
> On 11/16/20 5:57 PM, Andy Lutomirski wrote:
>> On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
>> wrote:
> When executing more code in the kernel, we are likely to reach a point
> where we need to sleep while we are using the user page-tab
On 11/19/20 5:06 PM, Andy Lutomirski wrote:
On Thu, Nov 19, 2020 at 4:06 AM Alexandre Chartre
wrote:
On 11/19/20 9:05 AM, Alexandre Chartre wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the per-cpu trampoline stack. Like the trampoline stack,
the PTI
On Thu, Nov 19, 2020 at 4:06 AM Alexandre Chartre
wrote:
>
>
>
> On 11/19/20 9:05 AM, Alexandre Chartre wrote:
> >
> > When entering the kernel from userland, use the per-task PTI stack
> > instead of the per-cpu trampoline stack. Like the trampoline stack,
> > the
On 11/19/20 9:05 AM, Alexandre Chartre wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the per-cpu trampoline stack. Like the trampoline stack,
the PTI stack is mapped both in the kernel and in the user page-table.
Using a per-task stack which is mapped in
On 11/19/20 2:49 AM, Andy Lutomirski wrote:
On Tue, Nov 17, 2020 at 8:59 AM Alexandre Chartre
wrote:
On 11/17/20 4:52 PM, Andy Lutomirski wrote:
On Tue, Nov 17, 2020 at 7:07 AM Alexandre Chartre
wrote:
On 11/16/20 7:34 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 10:10 AM Ale
On Tue, Nov 17, 2020 at 8:59 AM Alexandre Chartre
wrote:
>
>
>
> On 11/17/20 4:52 PM, Andy Lutomirski wrote:
> > On Tue, Nov 17, 2020 at 7:07 AM Alexandre Chartre
> > wrote:
> >>
> >>
> >>
> >> On 11/16/20 7:34 PM, Andy Lutomirski wrote:
> >>> On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
>
On 11/17/20 4:52 PM, Andy Lutomirski wrote:
On Tue, Nov 17, 2020 at 7:07 AM Alexandre Chartre
wrote:
On 11/16/20 7:34 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
wrote:
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alex
On Tue, Nov 17, 2020 at 7:07 AM Alexandre Chartre
wrote:
>
>
>
> On 11/16/20 7:34 PM, Andy Lutomirski wrote:
> > On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
> > wrote:
> >>
> >>
> >> On 11/16/20 5:57 PM, Andy Lutomirski wrote:
> >>> On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
> >>>
On 11/16/20 7:34 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
wrote:
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the p
On 11/16/20 10:24 PM, David Laight wrote:
From: Alexandre Chartre
Sent: 16 November 2020 18:10
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the per-cpu tra
From: Alexandre Chartre
> Sent: 16 November 2020 18:10
>
> On 11/16/20 5:57 PM, Andy Lutomirski wrote:
> > On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
> > wrote:
> >>
> >> When entering the kernel from userland, use the per-task PTI stack
> >> instead of the per-cpu trampoline stack. Like t
On 11/16/20 7:34 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
wrote:
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the p
On Mon, Nov 16, 2020 at 10:10 AM Alexandre Chartre
wrote:
>
>
> On 11/16/20 5:57 PM, Andy Lutomirski wrote:
> > On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
> > wrote:
> >>
> >> When entering the kernel from userland, use the per-task PTI stack
> >> instead of the per-cpu trampoline stack. L
On 11/16/20 5:57 PM, Andy Lutomirski wrote:
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
When entering the kernel from userland, use the per-task PTI stack
instead of the per-cpu trampoline stack. Like the trampoline stack,
the PTI stack is mapped both in the kernel and in the us
On Mon, Nov 16, 2020 at 6:47 AM Alexandre Chartre
wrote:
>
> When entering the kernel from userland, use the per-task PTI stack
> instead of the per-cpu trampoline stack. Like the trampoline stack,
> the PTI stack is mapped both in the kernel and in the user page-table.
> Using a per-task stack wh
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