x86: Handle 64bit framebuffer memory address properly

In a EFI system, the frame buffer address is 64bit, so currently
if the address is beyound 4G, kexec will set wrong address due to
truncate.

Linux kernel commit ae2ee627dc87 ('efifb: Add support for 64-bit
frame buffer addresses') added support for 64bit frame buffer
address, an 'ext_lfb_base' field is added as the upper 32-bits of
the frame buffer, and introduced a new capability flag
'VIDEO_TYPE_CAPABILITY_64BIT_BASE' to indicate if the extend field is
used.

This patch adopts this change, set proper extent address and capability
flag when the address is beyound 4G.

Signed-off-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

0 files changed, 0 insertions, 0 deletions