linux-kernel - [RFC 0/2] cgroup: New misc cgroup controller

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: <20210218195549.1696769-1-vipinsh@google.com>
Date:   Thu, 18 Feb 2021 11:55:47 -0800
From:   Vipin Sharma <vipinsh@...gle.com>
To:     tj@...nel.org, thomas.lendacky@....com, brijesh.singh@....com,
        jon.grimm@....com, eric.vantassell@....com, pbonzini@...hat.com,
        hannes@...xchg.org, frankja@...ux.ibm.com, borntraeger@...ibm.com
Cc:     corbet@....net, seanjc@...gle.com, vkuznets@...hat.com,
        wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        gingell@...gle.com, rientjes@...gle.com, dionnaglaze@...gle.com,
        kvm@...r.kernel.org, x86@...nel.org, cgroups@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vipin Sharma <vipinsh@...gle.com>
Subject: [RFC 0/2] cgroup: New misc cgroup controller

Hello,

This patch is creating a new misc cgroup controller for allocation and
tracking of resources which are not abstract like other cgroup
controllers.

This controller was initially proposed as encryption_id but after
the feedbacks, it is now changed to misc cgroup.
https://lore.kernel.org/lkml/20210108012846.4134815-2-vipinsh@google.com/

Changes from the encryption_id controller are:
1. There are only 3 files misc.{capacity, max, current} for all
   resources compared to each resource having their own 3 files in
   encryption_id cgroup.
2. If a resource capacity is 0 then it is considered inactive and won't
   show up in control files.
2. This is a lockless implementation similar to page counter APIs
   compared to single lock implementation in encryption_id cgroup.

Please provide any feedback for this RFC or if it is good for
merging then I can send a patch for merging.

Thanks

Vipin Sharma (2):
  cgroup: sev: Add misc cgroup controller
  cgroup: sev: Miscellaneous cgroup documentation.

 Documentation/admin-guide/cgroup-v1/misc.rst |   1 +
 Documentation/admin-guide/cgroup-v2.rst      |  64 ++-
 arch/x86/kvm/svm/sev.c                       |  60 ++-
 arch/x86/kvm/svm/svm.h                       |   1 +
 include/linux/cgroup_subsys.h                |   4 +
 include/linux/misc_cgroup.h                  |  75 +++
 init/Kconfig                                 |  14 +
 kernel/cgroup/Makefile                       |   1 +
 kernel/cgroup/misc.c                         | 456 +++++++++++++++++++
 9 files changed, 664 insertions(+), 12 deletions(-)
 create mode 100644 Documentation/admin-guide/cgroup-v1/misc.rst
 create mode 100644 include/linux/misc_cgroup.h
 create mode 100644 kernel/cgroup/misc.c

-- 
2.30.0.617.g56c4b15f3c-goog