Re: [Qemu-devel] [PATCH 12/19] nvic: In escalation to HardFault, support HF not being priority -1

[Richard Henderson]

On 09/12/2017 01:13 PM, Peter Maydell wrote:
> When escalating to HardFault, we must go into Lockup if we
> can't take the synchronous HardFault because the current
> execution priority is already at or below the priority of
> HardFault. In v7M HF is always priority -1 so a simple < 0
> comparison sufficed; in v8M the priority of HardFault can
> vary depending on whether it is a Secure or NonSecure
> HardFault, so we must check against the priority of the
> HardFault exception vector we're about to use.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  hw/intc/armv7m_nvic.c | 23 ++++++++++++-----------
>  1 file changed, 12 insertions(+), 11 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>

r~