On 3 August 2017 at 21:28, Richard Henderson wrote:
> While looking at this, I think there's an error in helper_wfi. The early exit
> for cpu_has_work should happen after the exception check.
No, that's deliberate; as Edgar says, the trap only
happens "if the instruction would otherwise have cau
On 08/02/2017 09:43 AM, Peter Maydell wrote:
> M profile cores can never trap on WFI or WFE instructions. Check for
> M profile in check_wfx_trap() to ensure this.
>
> The existing code will do the right thing for v7M cores because
> the hcr_el2 and scr_el3 registers will be all-zeroes and so we
>
On Wed, Aug 02, 2017 at 05:43:48PM +0100, Peter Maydell wrote:
> M profile cores can never trap on WFI or WFE instructions. Check for
> M profile in check_wfx_trap() to ensure this.
>
> The existing code will do the right thing for v7M cores because
> the hcr_el2 and scr_el3 registers will be all-
M profile cores can never trap on WFI or WFE instructions. Check for
M profile in check_wfx_trap() to ensure this.
The existing code will do the right thing for v7M cores because
the hcr_el2 and scr_el3 registers will be all-zeroes and so we
won't attempt to trap, but when we start setting ARM_FEA
