[PATCH] powerpc/kexec_file: Fix division by zero in extra size estimation

[Michael Ellerman]

On Mon, 30 Jan 2023 12:47:07 +1100, Michael Ellerman wrote:
> In kexec_extra_fdt_size_ppc64() there's logic to estimate how much
> extra space will be needed in the device tree for some memory related
> properties.
> 
> That logic uses the size of RAM divided by drmem_lmb_size() to do the
> estimation. However drmem_lmb_size() can be zero if the machine has no
> hotpluggable memory configured, which is the case when booting with qemu
> and no maxmem=x parameter is passed (the default).
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc/kexec_file: Fix division by zero in extra size estimation
      https://git.kernel.org/powerpc/c/7294194b47e994753a86eee8cf1c61f3f36458a3

cheers