On Wed, Jun 26, 2019 at 09:59:58AM +0800, Linus Torvalds wrote:
> On Tue, Jun 25, 2019 at 1:31 PM Peter Xu wrote:
> >
> > Yes that sounds reasonable to me, and that matches perfectly with
> > TASK_INTERRUPTIBLE and TASK_KILLABLE. The only thing that I am a bit
> > uncertain is whether we should
On Tue, Jun 25, 2019 at 1:31 PM Peter Xu wrote:
>
> Yes that sounds reasonable to me, and that matches perfectly with
> TASK_INTERRUPTIBLE and TASK_KILLABLE. The only thing that I am a bit
> uncertain is whether we should define FAULT_FLAG_INTERRUPTIBLE as a
> new bit or make it simply a
On Mon, Jun 24, 2019 at 09:31:42PM +0800, Linus Torvalds wrote:
> On Mon, Jun 24, 2019 at 3:43 PM Peter Xu wrote:
> >
> > Should we still be able to react on signal_pending() as part of fault
> > handling (because that's what this patch wants to do, at least for an
> > user-mode page fault)?
On Mon, Jun 24, 2019 at 3:43 PM Peter Xu wrote:
>
> Should we still be able to react on signal_pending() as part of fault
> handling (because that's what this patch wants to do, at least for an
> user-mode page fault)? Please kindly correct me if I misunderstood...
I think that with this patch
On Sat, Jun 22, 2019 at 11:02:48AM -0700, Linus Torvalds wrote:
> So I still think this all *may* ok, but at a minimum some of the
> comments are misleading, and we need more docs on what happens with
> normal signals.
>
> I'm picking on just the first one I noticed, but I think there were
>
So I still think this all *may* ok, but at a minimum some of the
comments are misleading, and we need more docs on what happens with
normal signals.
I'm picking on just the first one I noticed, but I think there were
other architectures with this too:
On Wed, Jun 19, 2019 at 7:20 PM Peter Xu
The idea comes from the upstream discussion between Linus and Andrea:
https://lkml.org/lkml/2017/10/30/560
A summary to the issue: there was a special path in handle_userfault()
in the past that we'll return a VM_FAULT_NOPAGE when we detected
non-fatal signals when waiting for userfault
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