On 04/05/2018 02:25 PM, Peter Maydell wrote:
> Currently our PMSAv7 and ARMv7M MPU implementation cannot handle
> MPU region sizes smaller than our TARGET_PAGE_SIZE. However we
> report that in a slightly confusing way:
>
> DRSR[3]: No support for MPU (sub)region alignment of 9 bits. Minimum is 10
>
> The problem is not the alignment of the region, but its size;
> tweak the error message to say so:
> DRSR[3]: No support for MPU (sub)region size of 512 bytes. Minimum is 1024.
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> This doesn't really need to go into 2.12, but as a cleanup to a warning
> message it's pretty harmless.
>
> target/arm/helper.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/target/arm/helper.c b/target/arm/helper.c
> index dcb8476d9e..b14fdab140 100644
> --- a/target/arm/helper.c
> +++ b/target/arm/helper.c
> @@ -9625,9 +9625,9 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
> }
> if (rsize < TARGET_PAGE_BITS) {
> qemu_log_mask(LOG_UNIMP,
> - "DRSR[%d]: No support for MPU (sub)region "
> - "alignment of %" PRIu32 " bits. Minimum is %d\n",
> - n, rsize, TARGET_PAGE_BITS);
> + "DRSR[%d]: No support for MPU (sub)region size of"
> + " %" PRIu32 " bytes. Minimum is %d.\n",
> + n, (1 << rsize), TARGET_PAGE_SIZE);
> continue;
> }
> if (srdis) {
>