From: Max Filippov <jcmvbkbc@gmail.com>
To: linux-xtensa@linux-xtensa.org
Cc: Chris Zankel <chris@zankel.net>,
linux-kernel@vger.kernel.org, Max Filippov <jcmvbkbc@gmail.com>
Subject: [PATCH 0/2] xtensa: cache aliasing fixes
Date: Mon, 16 Nov 2020 02:30:56 -0800 [thread overview]
Message-ID: <20201116103058.5461-1-jcmvbkbc@gmail.com> (raw)
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
next reply other threads:[~2020-11-16 11:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-16 10:30 Max Filippov [this message]
2020-11-16 10:30 ` [PATCH 1/2] xtensa: fix TLBTEMP area placement Max Filippov
2020-11-16 10:30 ` [PATCH 2/2] xtensa: disable preemption around cache alias management calls Max Filippov
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