Re: [PATCH v5 0/3] kdump: Enable LUKS-encrypted dump target support in ARM64 and PowerPC

On Wed, 25 Feb 2026 14:03:43 +0800 Coiby Xu [off-list ref] wrote:

CONFIG_CRASH_DM_CRYPT has been introduced to support LUKS-encrypted
device dump target by addressing two challenges [1],
 - Kdump kernel may not be able to decrypt the LUKS partition. For some
   machines, a system administrator may not have a chance to enter the
   password to decrypt the device in kdump initramfs after the 1st kernel
   crashes

 - LUKS2 by default use the memory-hard Argon2 key derivation function
   which is quite memory-consuming compared to the limited memory reserved
   for kdump.

To also enable this feature for ARM64 and PowerPC, we need to add a
device tree property dmcryptkeys [2] as similar to elfcorehdr to pass
the memory address of the stored info of dm-crypt keys to the kdump
kernel.

We don't have any ack/review tags for this series.  Could someone
please help out?