[PATCH] apple_m1_defconfig: Bump CONFIG_LMB_MAX_REGIONS to 64
trini at konsulko.com
Fri Mar 17 17:43:16 CET 2023
On Mon, Mar 13, 2023 at 03:31:32PM +0100, Mark Kettenis wrote:
> > From: Janne Grunau <j at jannau.net>
> > Date: Mon, 13 Mar 2023 14:54:32 +0100
> > Apple silicon SoCs have numerous embedded co-processors with pre-loaded
> > firmware. The co-processors text and data sections need to be mapped via
> > DART iommus controlled by the main processor. Those sections are
> > exported as reserved-memory. Bump CONFIG_LMB_MAX_REGIONS from 8 to 64 to
> > deal with the large amount of reserved-memory regions.
> We recently bumped the default for CONFIG_LMB_MAX_REGIONS from 8 to
> 16, but 64 would be a safer value for this platform as there are more
> co-processor drivers in the pipeline that may add reserved-memory
> regions. These machines have plenty of memory.
> > Signed-off-by: Janne Grunau <j at jannau.net>
> Reviewed-by: Mark Kettenis <kettenis at openbsd.org>
Does this mean it's a fix we need for v2023.04, or v2023.07 is OK?
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