Re: [PATCH v2 2/3] kho: skip zero-sized lowmem and global bootmem areas

[Pasha Tatashin]

On Wed, 04 Nov 2026 18:50:10 +0200, Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx> wrote:
> The lowmem and the global bootmem areas can have zero size, for example
> when none or all of the memory is below ARCH_LOW_ADDRESS_LIMIT, or when
> either of those areas is explicitly set to zero with kho_bootmem=.
> 
> For a zero-sized allocation memblock returns an address without reserving
> anything, and that empty area is recorded in kho_bootmem. If there is no
> memory below ARCH_LOW_ADDRESS_LIMIT, allocation of the empty lowmem area
> fails and KHO gets disabled.
> 
> [...]

Reviewed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>

-- 
Pasha