Re: [PATCH] target/arm: Catch illegal-exception-return from EL3 with bad NSE/NS

[Richard Henderson]

On 8/7/23 08:06, Peter Maydell wrote:
> The architecture requires (R_TYTWB) that an attempt to return from EL3
> when SCR_EL3.{NSE,NS} are {1,0} is an illegal exception return. (This
> enforces that the CPU can't ever be executing below EL3 with the
> NSE,NS bits indicating an invalid security state.)
>
> We were missing this check; add it.
>
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/arm/tcg/helper-a64.c | 9 +++++++++
>   1 file changed, 9 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~