From: "Alex Bennée" <alex.bennee@linaro.org>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org,
Richard Henderson <richard.henderson@linaro.org>,
Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [PATCH v2] target/arm/cpu64: Use 32-bit GDBstub when running in 32-bit KVM mode
Date: Mon, 10 Jan 2022 10:22:28 +0000 [thread overview]
Message-ID: <87lezndh5i.fsf@linaro.org> (raw)
In-Reply-To: <20220108150952.1483911-1-ardb@kernel.org>
Ard Biesheuvel <ardb@kernel.org> writes:
> When running under KVM, we may decide to run the CPU in 32-bit mode, by
> setting the 'aarch64=off' CPU option. In this case, we need to switch to
> the 32-bit version of the GDB stub too, so that GDB has the correct view
> of the CPU state. Without this, GDB debugging does not work at all, and
> errors out upon connecting to the target with a mysterious 'g' packet
> length error.
>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Alex Bennee <alex.bennee@linaro.org>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
--
Alex Bennée
WARNING: multiple messages have this Message-ID (diff)
From: "Alex Bennée" <alex.bennee@linaro.org>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Peter Maydell <peter.maydell@linaro.org>,
qemu-arm@nongnu.org,
Richard Henderson <richard.henderson@linaro.org>,
qemu-devel@nongnu.org
Subject: Re: [PATCH v2] target/arm/cpu64: Use 32-bit GDBstub when running in 32-bit KVM mode
Date: Mon, 10 Jan 2022 10:22:28 +0000 [thread overview]
Message-ID: <87lezndh5i.fsf@linaro.org> (raw)
In-Reply-To: <20220108150952.1483911-1-ardb@kernel.org>
Ard Biesheuvel <ardb@kernel.org> writes:
> When running under KVM, we may decide to run the CPU in 32-bit mode, by
> setting the 'aarch64=off' CPU option. In this case, we need to switch to
> the 32-bit version of the GDB stub too, so that GDB has the correct view
> of the CPU state. Without this, GDB debugging does not work at all, and
> errors out upon connecting to the target with a mysterious 'g' packet
> length error.
>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Alex Bennee <alex.bennee@linaro.org>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
--
Alex Bennée
next prev parent reply other threads:[~2022-01-10 10:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-08 15:09 [PATCH v2] target/arm/cpu64: Use 32-bit GDBstub when running in 32-bit KVM mode Ard Biesheuvel
2022-01-08 15:09 ` Ard Biesheuvel
2022-01-08 18:39 ` Richard Henderson
2022-01-08 18:39 ` Richard Henderson
2022-01-08 21:48 ` Philippe Mathieu-Daudé
2022-01-10 10:22 ` Alex Bennée [this message]
2022-01-10 10:22 ` Alex Bennée
2022-01-11 14:10 ` Peter Maydell
2022-01-11 14:10 ` Peter Maydell
2022-01-11 14:38 ` Ard Biesheuvel
2022-01-11 14:38 ` Ard Biesheuvel
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