[v3,0/9] Add missing features to FastRPC driver

Message

Ekansh Gupta May 30, 2024, 10:20 a.m. UTC

This patch series adds the listed features that have been missing
in upstream fastRPC driver.
- Add missing bug fixes.
- Add static PD restart support for audio and sensors PD using
  PDR framework.
- Redesign and improve remote heap management.
- Add fixes for unsigned PD. Unsigned PD can be enabled
  using userspace API:
  https://git.codelinaro.org/linaro/qcomlt/fastrpc/-/blob/master/src/fastrpc_apps_user.c?ref_type=heads#L1173
- Add check for untrusted applications and allow trusted processed to
  offload to system unsigned PD.
  https://git.codelinaro.org/srinivas.kandagatla/fastrpc-qcom/-/commit/dfd073681d6a02efa080c5066546ff80c609668a

Changes in v2:
- Added separate patch to add newlines in dev_err.
- Added a bug fix in fastrpc capability function.
- Added a new patch to save and restore interrupted context.
- Fixed config dependency for PDR support.

Changes in v3:
- Dropped interrupted context patch.
- Splitted few of the bug fix patches.
- Added Fixes tag wherever applicable.
- Updated proper commit message for few of the patches.

Ekansh Gupta (9):
  misc: fastrpc: Add missing dev_err newlines
  misc: fastrpc: Fix DSP capabilities request
  misc: fastrpc: Fix memory corruption in DSP capabilities
  misc: fastrpc: Add static PD restart support
  misc: fastrpc: Redesign remote heap management
  misc: fastrpc: Fix unsigned PD support
  misc: fastrpc: Restrict untrusted app to attach to privileged PD
  misc: fastrpc: Restrict untrusted app to spawn signed PD
  misc: fastrpc: Add system unsigned PD support

 drivers/misc/Kconfig        |   2 +
 drivers/misc/fastrpc.c      | 635 +++++++++++++++++++++++++++++-------
 include/uapi/misc/fastrpc.h |   2 +
 3 files changed, 526 insertions(+), 113 deletions(-)