linux-kernel - [PATCH 0/2] xtensa: cache aliasing fixes

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: <20201116103058.5461-1-jcmvbkbc@gmail.com>
Date:   Mon, 16 Nov 2020 02:30:56 -0800
From:   Max Filippov <jcmvbkbc@...il.com>
To:     linux-xtensa@...ux-xtensa.org
Cc:     Chris Zankel <chris@...kel.net>, linux-kernel@...r.kernel.org,
        Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH 0/2] xtensa: cache aliasing fixes

Hello,

this series changes TLBTEMP region placement and disables preemption
around all cache alias management calls. This fixes TLB miss and
multihit issues in the TLBTEMP area seen on cores with aliasing cache.

Max Filippov (2):
  xtensa: fix TLBTEMP area placement
  xtensa: disable preemption around cache alias management calls

 Documentation/xtensa/mmu.rst      |  9 ++++++---
 arch/xtensa/include/asm/pgtable.h |  2 +-
 arch/xtensa/mm/cache.c            | 14 ++++++++++++++
 3 files changed, 21 insertions(+), 4 deletions(-)

-- 
2.20.1