Hi Daniel,
On 2021-10-13 18:08, Daniel Vetter wrote:
On Wed, Oct 13, 2021 at 10:36:54AM -0400, Alyssa Rosenzweig wrote:
From: Robin Murphy
drm_gem_cma_mmap() cannot assume every implementation of dma_mmap_wc()
will end up calling remap_pfn_range() (which happens to set the relevant
vma flag,
> > From: Robin Murphy
> >
> > drm_gem_cma_mmap() cannot assume every implementation of dma_mmap_wc()
> > will end up calling remap_pfn_range() (which happens to set the relevant
> > vma flag, among others), so in order to make sure expectations around
> > VM_DONTEXPAND are met, let it explicitly
On Wed, Oct 13, 2021 at 10:36:54AM -0400, Alyssa Rosenzweig wrote:
> From: Robin Murphy
>
> drm_gem_cma_mmap() cannot assume every implementation of dma_mmap_wc()
> will end up calling remap_pfn_range() (which happens to set the relevant
> vma flag, among others), so in order to make sure expecta
From: Robin Murphy
drm_gem_cma_mmap() cannot assume every implementation of dma_mmap_wc()
will end up calling remap_pfn_range() (which happens to set the relevant
vma flag, among others), so in order to make sure expectations around
VM_DONTEXPAND are met, let it explicitly set the flag like most
