Re: Cross-device and cross-driver HMM support

2024-04-09 Thread Thomas Hellström
Hi, On Wed, 2024-04-03 at 12:09 -0300, Jason Gunthorpe wrote: > On Wed, Apr 03, 2024 at 04:06:11PM +0200, Christian König wrote: > > [UGH html emails, try to avoid those they don't get archived!] > > >    The problem with that isn't the software but the hardware. > >    At least on the AMD GPUs

Re: Cross-device and cross-driver HMM support

2024-04-03 Thread Jason Gunthorpe
On Wed, Apr 03, 2024 at 04:06:11PM +0200, Christian König wrote: [UGH html emails, try to avoid those they don't get archived!] >The problem with that isn't the software but the hardware. >At least on the AMD GPUs and Intels Xe accelerators we have seen so far >page faults are not fas

Re: Cross-device and cross-driver HMM support

2024-04-03 Thread Christian König
Am 03.04.24 um 14:57 schrieb Jason Gunthorpe: On Wed, Apr 03, 2024 at 11:16:36AM +0200, Christian König wrote: Am 03.04.24 um 00:57 schrieb Dave Airlie: On Wed, 27 Mar 2024 at 19:52, Thomas Hellström wrote: Hi! With our SVM mirror work we'll soon start looking at HMM cross-device support. T

Re: Cross-device and cross-driver HMM support

2024-04-03 Thread Jason Gunthorpe
On Wed, Apr 03, 2024 at 11:16:36AM +0200, Christian König wrote: > Am 03.04.24 um 00:57 schrieb Dave Airlie: > > On Wed, 27 Mar 2024 at 19:52, Thomas Hellström > > wrote: > > > Hi! > > > > > > With our SVM mirror work we'll soon start looking at HMM cross-device > > > support. The identified need

Re: Cross-device and cross-driver HMM support

2024-04-03 Thread Christian König
Am 03.04.24 um 00:57 schrieb Dave Airlie: On Wed, 27 Mar 2024 at 19:52, Thomas Hellström wrote: Hi! With our SVM mirror work we'll soon start looking at HMM cross-device support. The identified needs are 1) Instead of migrating foreign device memory to system when the current device is faulti

Re: Cross-device and cross-driver HMM support

2024-04-02 Thread Dave Airlie
On Wed, 27 Mar 2024 at 19:52, Thomas Hellström wrote: > > Hi! > > With our SVM mirror work we'll soon start looking at HMM cross-device > support. The identified needs are > > 1) Instead of migrating foreign device memory to system when the > current device is faulting, leave it in place... > 1a)