From: Sumit Garg <sumit.garg@linaro.org>
To: linux-arm-kernel@lists.infradead.org, dianders@chromium.org,
will@kernel.org, liwei391@huawei.com
Cc: catalin.marinas@arm.com, mark.rutland@arm.com,
mhiramat@kernel.org, daniel.thompson@linaro.org,
jason.wessel@windriver.com, maz@kernel.org,
linux-kernel@vger.kernel.org, Sumit Garg <sumit.garg@linaro.org>
Subject: [PATCH v2 0/2] arm64: Fix pending single-step debugging issues
Date: Wed, 13 Apr 2022 12:24:56 +0530 [thread overview]
Message-ID: <20220413065458.88541-1-sumit.garg@linaro.org> (raw)
This patch-set reworks pending fixes from Wei's series [1] to make
single-step debugging via kgdb/kdb on arm64 work as expected. There was
a prior discussion on ML [2] regarding if we should keep the interrupts
enabled during single-stepping. So patch #1 follows suggestion from Will
[3] to not disable interrupts during single stepping but rather skip
single stepping within interrupt handler.
[1] https://lore.kernel.org/all/20200509214159.19680-1-liwei391@huawei.com/
[2] https://lore.kernel.org/all/CAD=FV=Voyfq3Qz0T3RY+aYWYJ0utdH=P_AweB=13rcV8GDBeyQ@mail.gmail.com/
[3] https://lore.kernel.org/all/20200626095551.GA9312@willie-the-truck/
Changes in v2:
- Replace patch #1 to rather follow Will's suggestion.
Sumit Garg (2):
arm64: entry: Skip single stepping interrupt handlers
arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step
arch/arm64/include/asm/debug-monitors.h | 1 +
arch/arm64/kernel/debug-monitors.c | 5 +++++
arch/arm64/kernel/entry-common.c | 18 +++++++++++++++++-
arch/arm64/kernel/kgdb.c | 2 ++
4 files changed, 25 insertions(+), 1 deletion(-)
--
2.25.1
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next reply other threads:[~2022-04-13 6:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-13 6:54 Sumit Garg [this message]
2022-04-13 6:54 ` [PATCH v2 1/2] arm64: entry: Skip single stepping interrupt handlers Sumit Garg
2022-05-06 16:06 ` Daniel Thompson
2022-05-09 7:55 ` Sumit Garg
2022-05-09 9:25 ` Daniel Thompson
2022-05-10 5:11 ` Sumit Garg
2022-04-13 6:54 ` [PATCH v2 2/2] arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step Sumit Garg
2022-05-06 16:12 ` Daniel Thompson
2022-05-09 7:56 ` Sumit Garg
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