On Fri, May 01, 2026 at 12:42:47AM +0530, Mukesh Ojha wrote:
> This series is a collection of misc fixes for the Qualcomm PAS remoteproc
> driver and its supporting SCM/MDT loader infrastructure.
>
> - Fix sparse __iomem warnings in qcom_adsp, qcom_pas and qcom_wcnss by
> annotating mem_region fields with __iomem and using __force at call sites.
> - Guard the DTB metadata release in qcom_pas_load() with a dtb_pas_id check,
> consistent with all other release sites in the driver.
> - Move PAS context allocation from probe into qcom_pas_alloc_memory_region()
> so the DTB context is only created for subsystems that actually use it.
> - Map/unmap the subsystem memory region on demand around firmware load and
> coredump, avoiding potential XPU violations on EL2 platforms where the
> region may be handed off to the remote side.
> - Drop the now-unused dtb_mem_region field from struct qcom_pas.
> - Add a keep_mdt_buf flag to struct qcom_scm_pas_context to make metadata
> buffer retention explicit rather than implicit.
Reminder for review and if they look fine, can this be picked up?
>
> Changes in v4:
> https://lore.kernel.org/lkml/20260331183957.2015440-1-mukesh.ojha@oss.qualcomm.com/
> https://lore.kernel.org/lkml/20260331191210.2019758-2-mukesh.ojha@oss.qualcomm.com/
>
> - Last series mistakenly divided two series cause laptop shutdown.
> - Some minor refactor common code rest is same a rebased on latest
> kernel.
> - Added new 6/6 to the series.
>
> Mukesh Ojha (6):
> remoteproc: qcom: fix sparse warnings for __iomem annotated mem_region
> remoteproc: qcom: pas: Guard dtb metadata release with dtb_pas_id
> check
> remoteproc: qcom: pas: Fix the PAS context creation placement
> remoteproc: qcom: pas: Map/unmap subsystem region before
> auth_and_reset
> remoteproc: qcom: pas: Drop unused dtb_mem_region field
> firmware: qcom: scm: introduce keep_mdt_buf flag in PAS context
>
> drivers/firmware/qcom/qcom_scm.c | 21 +++++-
> drivers/remoteproc/qcom_q6v5_adsp.c | 6 +-
> drivers/remoteproc/qcom_q6v5_pas.c | 99 +++++++++++++++-----------
> drivers/remoteproc/qcom_wcnss.c | 6 +-
> drivers/soc/qcom/mdt_loader.c | 18 +++--
> include/linux/firmware/qcom/qcom_scm.h | 1 +
> include/linux/soc/qcom/mdt_loader.h | 4 +-
> 7 files changed, 99 insertions(+), 56 deletions(-)
>
> --
> 2.53.0
>
--
-Mukesh Ojha