Re: [PATCH v4 3/5] firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation

On Wed, May 20, 2026 at 08:49:46PM +0000, Mostafa Saleh wrote:

From: Sebastian Ene sebastianene@google.com

Use the descriptor's `ep_mem_offset` to calculate the start of the endpoint memory access array and to comply with the FF-A spec instead of defaulting to `sizeof(struct ffa_mem_region)`. This requires moving `ffa_mem_region_additional_setup()` earlier in the setup flow. Also, add sanity checks to ensure the calculated descriptor offsets do not exceed `max_fragsize`.

Core change remains same as v3 except improved error checking, so my review still applies.

Reviewed-by: Sudeep Holla sudeep.holla@kernel.org