[PATCH] x86: Handle 64bit framebuffer memory address properly

Kairui Song kasong at redhat.com
Fri May 31 02:38:32 PDT 2019


On Fri, May 31, 2019 at 5:29 PM Simon Horman <horms at verge.net.au> wrote:
>
> On Fri, Nov 23, 2018 at 05:26:33PM +0800, Kairui Song wrote:
> > 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 at redhat.com>
>
> Sorry for letting this slip through the cracks.
> Please let me know if this is still relevant.

Hi Simon, I checked kexec-tools repo and this patch is merged already,
maybe you replied the wrong mail?


--
Best Regards,
Kairui Song



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