Re: [PATCH v23 5/6] of: Support more than one crash kernel regions for kexec -s

Rob Herring
2022-05-05T20:03:13Z

On Thu, 05 May 2022 17:18:44 +0800, Zhen Lei wrote:
> When "crashkernel=X,high" is used, there may be two crash regions:
> high=crashk_res and low=crashk_low_res. But now the syscall
> kexec_file_load() only add crashk_res into "linux,usable-memory-range",
> this may cause the second kernel to have no available dma memory.
>
> Fix it like kexec tool do for option -c, add both 'high' and 'low' regions
> into the dtb.
>
> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
> ---
> drivers/of/kexec.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>

Acked-by: Rob Herring <robh@kernel.org>