lkml.org 
[lkml]   [2020]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] drm/shmem: drop pgprot_decrypted()
From
Date
On 2/28/20 11:47 AM, Gerd Hoffmann wrote:
> Was added by commit 95cf9264d5f3 ("x86, drm, fbdev: Do not specify
> encrypted memory for video mappings"), then it was kept through various
> changes.
>
> While vram actually needs decrypted mappings this is not correct for
> shmem gem objects which live in main memory not io memory, so remove the
> call.
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
> drivers/gpu/drm/drm_gem_shmem_helper.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index aad9324dcf4f..df31e5782eed 100644
> --- a/drivers/gpu/drm/drm_gem_shmem_helper.c
> +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
> @@ -548,7 +548,6 @@ int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
> vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
> if (!shmem->map_cached)
> vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
> - vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);
> vma->vm_ops = &drm_gem_shmem_vm_ops;
>
> return 0;

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>

Thanks,

Thomas


\
 
 \ /
  Last update: 2020-02-28 12:16    [W:0.217 / U:1.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site