diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-08-26 09:20:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-26 09:20:01 +0200 |
| commit | 3cb9bc85029f2ceb7a5babadcab445c7cb861da8 (patch) | |
| tree | 6453e9ebb9ad3b3cab07ff31dc9a90ea9f7951bc /drivers/video | |
| parent | f1a5b53570001b1bcbf890ac6c4be1db99f8cc28 (diff) | |
| parent | 413d63d71b222108d19703f3fd5cf9108652a730 (diff) | |
Merge branch 'x86/mm' into efi/core, to pick up dependencies
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/core/fbmem.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 7a42238db446..25e862c487f6 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -32,6 +32,7 @@ #include <linux/device.h> #include <linux/efi.h> #include <linux/fb.h> +#include <linux/mem_encrypt.h> #include <asm/fb.h> @@ -1396,6 +1397,12 @@ fb_mmap(struct file *file, struct vm_area_struct * vma) mutex_lock(&info->mm_lock); if (fb->fb_mmap) { int res; + + /* + * The framebuffer needs to be accessed decrypted, be sure + * SME protection is removed ahead of the call + */ + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); res = fb->fb_mmap(info, vma); mutex_unlock(&info->mm_lock); return res; @@ -1421,6 +1428,11 @@ fb_mmap(struct file *file, struct vm_area_struct * vma) mutex_unlock(&info->mm_lock); vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + /* + * The framebuffer needs to be accessed decrypted, be sure + * SME protection is removed + */ + vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); fb_pgprotect(file, vma, start); return vm_iomap_memory(vma, start, len); |