On Sat, 3 Jun 2023 at 05:52, Richard Henderson <richard.hender...@linaro.org> wrote: > > On 6/2/23 14:43, Zhuojia Shen wrote: > > Accessing EL0-accessible Debug Communication Channel (DCC) registers in > > user mode emulation is currently enabled. However, it does not match > > Linux behavior as Linux sets MDSCR_EL1.TDCC on startup to disable EL0 > > access to DCC (see __cpu_setup() in arch/arm64/mm/proc.S). > > > > This patch fixes access_tdcc() to check MDSCR_EL1.TDCC for EL0 and sets > > MDSCR_EL1.TDCC for user mode emulation to match Linux. > > > > Signed-off-by: Zhuojia Shen <chaosdefinit...@hotmail.com> > > It would be nice to define the fields of MDSCR properly but either way, > > Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Applied to target-arm.next, thanks. -- PMM
