linux-kernel - [PATCH v3 0/3] Serialize execution environment changes for MHI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1612815062-4738-1-git-send-email-bbhatt@codeaurora.org>
Date:   Mon,  8 Feb 2021 12:10:59 -0800
From:   Bhaumik Bhatt <bbhatt@...eaurora.org>
To:     manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, hemantk@...eaurora.org,
        jhugo@...eaurora.org, linux-kernel@...r.kernel.org,
        loic.poulain@...aro.org, carl.yin@...ctel.com,
        naveen.kumar@...ctel.com, Bhaumik Bhatt <bbhatt@...eaurora.org>
Subject: [PATCH v3 0/3] Serialize execution environment changes for MHI

v3:
-Update commit text to accurately reflect changes and reasoning based on reviews

v2:
-Add patch to clear devices when moving execution environments

During full boot chain firmware download, the PM state worker downloads the AMSS
image after waiting for the SBL execution environment change in PBL mode itself.
Since getting rid of the firmware load worker thread, this design needs to
change and MHI host must download the AMSS image from the SBL mode of PM state
worker thread instead of blocking waits for SBL EE in PBL transition processing.

Ensure that EE changes are handled only from appropriate places and occur
one after another and handle only PBL or RDDM EE changes as critical events
directly from the interrupt handler and the status callback is given to the
controller drivers promptly.

When moving from SBL to AMSS EE, clear SBL specific client devices by calling
remove callbacks for them so they are not left opened in a different execution
environment.

Bhaumik Bhatt (3):
  bus: mhi: core: Clear devices when moving execution environments
  bus: mhi: core: Download AMSS image from appropriate function
  bus: mhi: core: Process execution environment changes serially

 drivers/bus/mhi/core/boot.c     | 44 ++++++++++++++++++++---------------------
 drivers/bus/mhi/core/internal.h |  1 +
 drivers/bus/mhi/core/main.c     | 36 +++++++++++++++++++++++----------
 drivers/bus/mhi/core/pm.c       | 10 ++++++++--
 4 files changed, 56 insertions(+), 35 deletions(-)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project