linux-kernel - [PATCH v4 0/3] openrisc: Add cacheinfo support and introduce new utility functions

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: <20250328202632.72809-1-sahilcdq@proton.me>
Date: Sat, 29 Mar 2025 01:56:29 +0530
From: Sahil Siddiq <icegambit91@...il.com>
To: jonas@...thpole.se,
	stefan.kristiansson@...nalahti.fi,
	shorne@...il.com
Cc: sahilcdq@...ton.me,
	linux-openrisc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/3] openrisc: Add cacheinfo support and introduce new utility functions

Hi,

The main purpose of this series is to expose CPU cache attributes for
OpenRISC in sysfs using the cacheinfo API. The core implementation
to achieve this is in patch #3. Patch #1 and #2 add certain enhancements
to simplify the implementation of cacheinfo support.

Patch #1 removes duplication of cache-related data members in struct
cpuinfo_or1k.

Patch #2 introduces several utility functions. One set of functions is
used to check if the cache components and SPRs exist before attempting
to use them. The other set provides a convenient interface to flush or
invalidate a range of cache blocks.

This version addresses review comments posted in response to v3. In
commit #2, I chose not to make "cache_loop_page()" inline after reading
point 15 in the coding style doc [1]. Let me know if it should be made
inline.

Thanks,
Sahil

[1] https://www.kernel.org/doc/html/latest/process/coding-style.html

Sahil Siddiq (3):
  openrisc: Refactor struct cpuinfo_or1k to reduce duplication
  openrisc: Introduce new utility functions to flush and invalidate
    caches
  openrisc: Add cacheinfo support

 arch/openrisc/include/asm/cacheflush.h |  17 ++++
 arch/openrisc/include/asm/cpuinfo.h    |  31 ++++++--
 arch/openrisc/kernel/Makefile          |   2 +-
 arch/openrisc/kernel/cacheinfo.c       | 104 +++++++++++++++++++++++++
 arch/openrisc/kernel/dma.c             |  18 +----
 arch/openrisc/kernel/setup.c           |  45 +----------
 arch/openrisc/mm/cache.c               |  87 +++++++++++++++++++--
 arch/openrisc/mm/init.c                |   5 +-
 8 files changed, 235 insertions(+), 74 deletions(-)
 create mode 100644 arch/openrisc/kernel/cacheinfo.c

base-commit: ea1413e5b53a8dd4fa7675edb23cdf828bbdce1e
-- 
2.48.1