Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-08 Thread Rob Clark
On Mon, Aug 8, 2022 at 7:56 AM Christian König wrote: > > Am 08.08.22 um 15:26 schrieb Rob Clark: > > On Mon, Aug 8, 2022 at 4:22 AM Christian König > > wrote: > > > > [SNIP] > If the virtio/virtgpu UAPI was build around the idea that this is > possible then it is most likely

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-08 Thread Christian König
Am 08.08.22 um 15:26 schrieb Rob Clark: On Mon, Aug 8, 2022 at 4:22 AM Christian König wrote: [SNIP] If the virtio/virtgpu UAPI was build around the idea that this is possible then it is most likely fundamental broken. How else can you envision mmap'ing to guest userspace working? Well long

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-08 Thread Rob Clark
On Mon, Aug 8, 2022 at 4:22 AM Christian König wrote: > > Am 07.08.22 um 21:10 schrieb Rob Clark: > > On Sun, Aug 7, 2022 at 11:05 AM Christian König > > wrote: > >> Am 07.08.22 um 19:56 schrieb Rob Clark: > >>> On Sun, Aug 7, 2022 at 10:38 AM Christian König > >>> wrote: > [SNIP] >

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-08 Thread Christian König
Am 07.08.22 um 21:10 schrieb Rob Clark: On Sun, Aug 7, 2022 at 11:05 AM Christian König wrote: Am 07.08.22 um 19:56 schrieb Rob Clark: On Sun, Aug 7, 2022 at 10:38 AM Christian König wrote: [SNIP] And exactly that was declared completely illegal the last time it came up on the mailing list.

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Rob Clark
On Sun, Aug 7, 2022 at 11:05 AM Christian König wrote: > > Am 07.08.22 um 19:56 schrieb Rob Clark: > > On Sun, Aug 7, 2022 at 10:38 AM Christian König > > wrote: > >> [SNIP] > >> And exactly that was declared completely illegal the last time it came > >> up on the mailing list. > >> > >> Daniel

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Christian König
Am 07.08.22 um 19:56 schrieb Rob Clark: On Sun, Aug 7, 2022 at 10:38 AM Christian König wrote: [SNIP] And exactly that was declared completely illegal the last time it came up on the mailing list. Daniel implemented a whole bunch of patches into the DMA-buf layer to make it impossible for KVM

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Rob Clark
On Sun, Aug 7, 2022 at 10:38 AM Christian König wrote: > > Am 07.08.22 um 19:35 schrieb Rob Clark: > > On Sun, Aug 7, 2022 at 10:14 AM Christian König > > wrote: > >> Am 07.08.22 um 19:02 schrieb Rob Clark: > >>> On Sun, Aug 7, 2022 at 9:09 AM Christian König > >>> wrote: > Am 29.07.22 um

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Christian König
Am 07.08.22 um 19:35 schrieb Rob Clark: On Sun, Aug 7, 2022 at 10:14 AM Christian König wrote: Am 07.08.22 um 19:02 schrieb Rob Clark: On Sun, Aug 7, 2022 at 9:09 AM Christian König wrote: Am 29.07.22 um 19:07 schrieb Rob Clark: From: Rob Clark This is a fairly narrowly focused

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Rob Clark
On Sun, Aug 7, 2022 at 10:14 AM Christian König wrote: > > Am 07.08.22 um 19:02 schrieb Rob Clark: > > On Sun, Aug 7, 2022 at 9:09 AM Christian König > > wrote: > >> Am 29.07.22 um 19:07 schrieb Rob Clark: > >>> From: Rob Clark > >>> > >>> This is a fairly narrowly focused interface, providing

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Christian König
Am 07.08.22 um 19:02 schrieb Rob Clark: On Sun, Aug 7, 2022 at 9:09 AM Christian König wrote: Am 29.07.22 um 19:07 schrieb Rob Clark: From: Rob Clark This is a fairly narrowly focused interface, providing a way for a VMM in userspace to tell the guest kernel what pgprot settings to use when

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Rob Clark
On Sun, Aug 7, 2022 at 9:09 AM Christian König wrote: > > Am 29.07.22 um 19:07 schrieb Rob Clark: > > From: Rob Clark > > > > This is a fairly narrowly focused interface, providing a way for a VMM > > in userspace to tell the guest kernel what pgprot settings to use when > > mapping a buffer to

Re: [Linaro-mm-sig] [PATCH 1/3] dma-buf: Add ioctl to query mmap info

2022-08-07 Thread Christian König
Am 29.07.22 um 19:07 schrieb Rob Clark: From: Rob Clark This is a fairly narrowly focused interface, providing a way for a VMM in userspace to tell the guest kernel what pgprot settings to use when mapping a buffer to guest userspace. For buffers that get mapped into guest userspace,