Re: [PATCH v4 08/10] arm64: kdump: exclude non-dumpable reserved memory regions from vmcore

From: Pratyush Yadav

Date: Tue Jun 30 2026 - 07:19:47 EST


On Tue, Jun 30 2026, Wandun Chen wrote:

> From: Wandun Chen <chenwandun@xxxxxxxxxxx>
>
> Reserved memory regions are excluded from vmcore by default unless
> marked dumpable. Honor the dumpable flag to filter out device firmware
> regions (e.g., GPU, DSP, modem) reserved via device tree, since they
> typically contain data not useful for kernel crash analysis and can
> significantly increase vmcore size.
>
> Use of_reserved_mem_kdump_exclude() to perform the exclusion, and
> pre-size the crash_mem array via of_reserved_mem_kdump_nr_ranges().
>
> Signed-off-by: Wandun Chen <chenwandun@xxxxxxxxxxx>
> Tested-by: Meijing Zhao <zhaomeijing@xxxxxxxxxxx>
> Acked-by: Will Deacon <will@xxxxxxxxxx>

Acked-by: Pratyush Yadav <pratyush@xxxxxxxxxx>

[...]

--
Regards,
Pratyush Yadav