On 07/09/2018 05:45 AM, Peter Maydell wrote: > For M-profile exception returns, the mmu index to use for exception > return unstacking is supposed to be that of wherever we are returning to: > * if returning to handler mode, privileged > * if returning to thread mode, privileged or unprivileged depending on > CONTROL.nPRIV for the destination security state > > We were passing the wrong thing as the 'priv' argument to > arm_v7m_mmu_idx_for_secstate_and_priv(). The effect was that guests > which programmed the MPU to behave differently for privileged and > unprivileged code could get spurious MemManage Unstack exceptions. > > Reported-by: Adithya Baglody <adithya.nagaraj.bagl...@intel.com> > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > --- > target/arm/helper.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
