[PATCH 28/33] arm_mpam: Consider overflow in bandwidth counter state
Jonathan Cameron
jonathan.cameron at huawei.com
Mon Nov 10 09:32:59 PST 2025
On Fri, 7 Nov 2025 12:34:45 +0000
Ben Horgan <ben.horgan at arm.com> wrote:
> Use the overflow status bit to track overflow on each bandwidth counter
> read and add the counter size to the correction when overflow is detected.
>
> This assumes that only a single overflow has occurred since the last read
> of the counter. Overflow interrupts, on hardware that supports them could
> be used to remove this limitation.
>
> Cc: Zeng Heng <zengheng4 at huawei.com>
> Signed-off-by: Ben Horgan <ben.horgan at arm.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.com>
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