Re: [RFC PATCH] target/arm: add RAZ/WI handling for DBGDTR[TX|RX]

[Peter Maydell]

On Tue, 16 May 2023 at 11:44, Alex Bennée <alex.bennee@linaro.org> 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.

Applied to target-arm.next, thanks.

(In theory we could implement the DCC and wire it up to a
chardev, which might be a cute way of getting early debug.)

-- PMM