[PATCH] lmb: prohibit allocations above ram_top even from same bank

[Andreas Schwab]

On Dez 02 2024, Sughosh Ganu wrote:

> There are platforms which set the value of ram_top based on certain
> restrictions that the platform might have in accessing memory above
> ram_top, even when the memory region is in the same DRAM bank. So,
> even though the LMB allocator works as expected, when trying to
> allocate memory above ram_top, prohibit this by marking all memory
> above ram_top as reserved, even if the said memory region is from the
> same bank.

This fixes the boot failure on the VisionFive2 board as reported in
<mvm8qtnv310.fsf at suse.de>.

Tested-by: Andreas Schwab <schwab at suse.de>

-- 
Andreas Schwab, SUSE Labs, schwab at suse.de
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