Joonas Lahtinen writes:
> Quoting Joonas Lahtinen (2024-12-11 14:59:33)
>> Quoting Christian König (2024-12-10 16:03:14)
>
>
>
>> > If you really want to expose an interface to userspace which walks the
>> > process
>> > page table, installs an MMU notifier, kmaps the resulting page and then
>
Quoting Joonas Lahtinen (2024-12-11 14:59:33)
> Quoting Christian König (2024-12-10 16:03:14)
> > If you really want to expose an interface to userspace which walks the
> > process
> > page table, installs an MMU notifier, kmaps the resulting page and then
> > memcpy
> > to/from it then you ab
On Thu, Dec 12, 2024 at 11:12:39AM +0100, Simona Vetter wrote:
> On Thu, Dec 12, 2024 at 09:49:24AM +0100, Thomas Hellström wrote:
> > On Mon, 2024-12-09 at 16:31 +0100, Simona Vetter wrote:
> > > On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> > > > Am 09.12.24 um 14:33 schrieb
On Thu, Dec 12, 2024 at 09:49:24AM +0100, Thomas Hellström wrote:
> On Mon, 2024-12-09 at 16:31 +0100, Simona Vetter wrote:
> > On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> > > Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> > > > From: Andrzej Hajda
> > > >
> > > > Debugger n
On Mon, 2024-12-09 at 16:31 +0100, Simona Vetter wrote:
> On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> > Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> > > From: Andrzej Hajda
> > >
> > > Debugger needs to read/write program's vmas including
> > > userptr_vma.
> > > Since hmm
First of all, do appreciate taking the time to explain your positions
much more verbosely this time.
Quoting Christian König (2024-12-10 16:03:14)
> Am 10.12.24 um 12:57 schrieb Joonas Lahtinen:
>
> Quoting Christian König (2024-12-10 12:00:48)
>
> Am 10.12.24 um 10:33 schrieb Joonas
Am 10.12.24 um 12:57 schrieb Joonas Lahtinen:
Quoting Christian König (2024-12-10 12:00:48)
Am 10.12.24 um 10:33 schrieb Joonas Lahtinen:
Quoting Christian König (2024-12-09 17:42:32)
Am 09.12.24 um 16:31 schrieb Simona Vetter:
On Mon, Dec 09, 2024 at 03:03:04PM +01
Quoting Christian König (2024-12-10 12:00:48)
> Am 10.12.24 um 10:33 schrieb Joonas Lahtinen:
>
> Quoting Christian König (2024-12-09 17:42:32)
>
> Am 09.12.24 um 16:31 schrieb Simona Vetter:
>
> On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
>
>
On Mon, Dec 09, 2024 at 04:42:32PM +0100, Christian König wrote:
> Am 09.12.24 um 16:31 schrieb Simona Vetter:
> > On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> > > Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> > > > From: Andrzej Hajda
> > > >
> > > > Debugger needs to read/
Am 10.12.24 um 10:33 schrieb Joonas Lahtinen:
Quoting Christian König (2024-12-09 17:42:32)
Am 09.12.24 um 16:31 schrieb Simona Vetter:
On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
From: Andrzej Hajda
Debugger needs to read/writ
Quoting Christian König (2024-12-09 17:42:32)
> Am 09.12.24 um 16:31 schrieb Simona Vetter:
> > On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> >> Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> >>> From: Andrzej Hajda
> >>>
> >>> Debugger needs to read/write program's vmas includ
On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
> Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> > From: Andrzej Hajda
> >
> > Debugger needs to read/write program's vmas including userptr_vma.
> > Since hmm_range_fault is used to pin userptr vmas, it is possible
> > to map those
Am 09.12.24 um 16:42 schrieb Christian König:
Am 09.12.24 um 16:31 schrieb Simona Vetter:
On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
From: Andrzej Hajda
Debugger needs to read/write program's vmas including userptr_vma.
Since
Am 09.12.24 um 16:31 schrieb Simona Vetter:
On Mon, Dec 09, 2024 at 03:03:04PM +0100, Christian König wrote:
Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
From: Andrzej Hajda
Debugger needs to read/write program's vmas including userptr_vma.
Since hmm_range_fault is used to pin userptr vmas, it
(+ Thomas and Matt B who this was reviewed with as a concept)
Quoting Christian König (2024-12-09 16:03:04)
> Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
> > +int xe_vm_userptr_access(struct xe_userptr_vma *uvma, u64 offset,
> > + void *buf, u64 len, bool write)
> > +{
> >
Am 09.12.24 um 14:33 schrieb Mika Kuoppala:
From: Andrzej Hajda
Debugger needs to read/write program's vmas including userptr_vma.
Since hmm_range_fault is used to pin userptr vmas, it is possible
to map those vmas from debugger context.
Oh, this implementation is extremely questionable as we
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