Yongrong Wang
aa567d43f6
This commit fixes a memory alignment issue in the rpmsg subsystem. The previous implementation used a flexible array member (rdev[0]) in struct rpmsg_s, but due to automatic 8-byte padding, rpmsg->rdev could differ from the transport layer's rdev address (e.g., rpmsg_virtio->rvdev.rdev), causing potential memory corruption. Changes: - Remove rdev[0] flexible array member from struct rpmsg_s - Add rpmsg_get_rdev_by_rpmsg() inline helper to calculate rdev address as (rpmsg + 1), ensuring correct pointer arithmetic - Update all rpmsg->rdev references to use the new helper function - Fix rpmsg_virtio_notify_wait() to use correct container_of macro Signed-off-by: Yongrong Wang <wangyongrong@xiaomi.com>
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
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