From: Luis Machado <luis.machado@linaro.org>
To: Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Keno Fischer <keno@juliacomputing.com>,
kernel-team@android.com
Subject: Re: [PATCH v2 0/4] arm64: Fix single-step handling
Date: Fri, 3 Jul 2020 07:52:34 -0300 [thread overview]
Message-ID: <598bb1fd-c475-53b6-ef6a-bb2838f4be25@linaro.org> (raw)
In-Reply-To: <20200702212618.17800-1-will@kernel.org>
Hi Will,
On 7/2/20 6:26 PM, Will Deacon wrote:
> Hi all,
>
> This is version two of the patches I previously posted here:
>
> v1: https://lore.kernel.org/linux-arm-kernel/20200603151033.11512-1-will@kernel.org/
>
> Thanks to Keno for a bunch of helpful feedback on that, which has led to
> the following major changes for v2:
>
> - Use pseudo-step traps for both entering a signal handler and exiting a
> system call.
>
> - Document our weird x7 behaviour with PTRACE_SYSCALL.
>
> It has to be said that I'm a bit nervous about these changes. I played
> around with GDB and things seemed ok, but I would really appreciate it
> if Luis could run the GDB testsuite with these changes applied.
Thanks for working on this. I'll need some time to give this a go. I'll
let you know what the results are.
Do I only need to exercise the AArch64 state? Or would this impact
AArch32 as well?
Regards,
Luis
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next prev parent reply other threads:[~2020-07-03 10:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 21:26 [PATCH v2 0/4] arm64: Fix single-step handling Will Deacon
2020-07-02 21:26 ` [PATCH v2 1/4] arm64: ptrace: Add a comment describing our syscall entry/exit trap ABI Will Deacon
2020-07-02 21:26 ` [PATCH v2 2/4] arm64: ptrace: Consistently use pseudo-singlestep exceptions Will Deacon
2020-07-10 14:02 ` Sasha Levin
2020-07-02 21:26 ` [PATCH v2 3/4] arm64: Override SPSR.SS when single-stepping is enabled Will Deacon
2020-07-10 14:02 ` Sasha Levin
2020-07-02 21:26 ` [PATCH v2 4/4] arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP Will Deacon
2020-07-03 10:52 ` Luis Machado [this message]
2020-07-03 11:49 ` [PATCH v2 0/4] arm64: Fix single-step handling Will Deacon
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