Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
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 v2 0/3] xtensa: add division by zero exception handler
Date:   Fri, 13 May 2022 20:34:34 -0700
Message-Id: <20220514033437.4182899-1-jcmvbkbc@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Hello,

this series adds handlers for hardware and artificial division by zero
exceptions and improves call0 ABI probing in the presence of unrelated
illegal instructions.

Changes v1->v2:

- split ABI probing improvement from the artificial division by 0
- don't limit artificial division by 0 pattern detection to
  configurations without HW division opcodes, do it always

Max Filippov (3):
  xtensa: add trap handler for division by zero
  xtensa: support artificial division by 0 exception
  xtensa: improve call0 ABI probing

 arch/xtensa/include/asm/thread_info.h |  4 +++
 arch/xtensa/kernel/asm-offsets.c      |  3 ++
 arch/xtensa/kernel/entry.S            |  5 +++
 arch/xtensa/kernel/traps.c            | 50 ++++++++++++++++++++++++++-
 4 files changed, 61 insertions(+), 1 deletion(-)

-- 
2.30.2