[U-Boot] [PATCH v2 02/12] x86: Add an accelerated memmove() function

[Bin Meng]

Hi Simon,

On Sat, Oct 8, 2016 at 10:25 AM, Bin Meng <bmeng.cn at gmail.com> wrote:
> Hi Simon,
>
> On Thu, Oct 6, 2016 at 10:42 AM, Simon Glass <sjg at chromium.org> wrote:
>> Bring in a faster memmove() from Linux 4.7. This speeds up scrolling on the
>> display.
>>
>> Signed-off-by: Simon Glass <sjg at chromium.org>
>> ---
>>
>> Changes in v2:
>> - Move the code into string.c
>> - Fix multi-line comments that should not be
>>
>>  arch/x86/include/asm/string.h |   2 +-
>>  arch/x86/lib/string.c         | 161 ++++++++++++++++++++++++++++++++++++++++++
>>  2 files changed, 162 insertions(+), 1 deletion(-)
>>
>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
>
> Tested on Crown Bay with an external PCIe graphics card
> Tested-by: Bin Meng <bmeng.cn at gmail.com>
>
> However, I did not see significant speed up on screen scrolling...
>

Crown Bay is still using cfb_console.c, which is the legacy driver
that does not use memmove(). Looks the new console_xxx driver is using
memmove(). I guess I will need convert Crown Bay to use DM video.

Regards,
Bin