From: Richard Henderson <richard.henderson@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>, qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org, Anders Roxell <anders.roxell@linaro.org>,
Evgeny Iakovlev <eiakovlev@linux.microsoft.com>,
Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [RFC PATCH] target/arm: add RAZ/WI handling for DBGDTR[TX|RX]
Date: Tue, 16 May 2023 13:15:22 -0700 [thread overview]
Message-ID: <91729126-1e70-2d80-88f4-c636199dba6a@linaro.org> (raw)
In-Reply-To: <20230516104420.407912-1-alex.bennee@linaro.org>
On 5/16/23 03:44, Alex Bennée wrote:
> The commit b3aa2f2128 (target/arm: provide stubs for more external
> debug registers) was added to handle HyperV's unconditional usage of
> Debug Communications Channel. It turns out that Linux will similarly
> break if you enable CONFIG_HVC_DCC "ARM JTAG DCC console".
>
> Extend the registers we RAZ/WI set to avoid this.
>
> Cc: Anders Roxell<anders.roxell@linaro.org>
> Cc: Evgeny Iakovlev<eiakovlev@linux.microsoft.com>
> Signed-off-by: Alex Bennée<alex.bennee@linaro.org>
> ---
> target/arm/debug_helper.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2023-05-16 20:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-16 10:44 [RFC PATCH] target/arm: add RAZ/WI handling for DBGDTR[TX|RX] Alex Bennée
2023-05-16 20:15 ` Richard Henderson [this message]
2023-05-18 10:10 ` Peter Maydell
2023-05-18 11:09 ` Alex Bennée
2023-05-18 11:43 ` Peter Maydell
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