Messages in this thread | | | Date | Fri, 30 Oct 2015 19:05:14 +0000 | From | Mark Rutland <> | Subject | Re: [PATCH v8 1/5] Documentation: add sbsa-gwdt driver documentation |
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On Fri, Oct 30, 2015 at 01:53:24PM -0500, Timur Tabi wrote: > On 10/30/2015 01:35 PM, Fu Wei wrote: > >>I think maybe Mark was asking why WS1 is optional, not the WS1 > >My answer is for "why WS1 is optional"! > > > >>>interrupt. Maybe you can reword the documentation to make is clear > >>>that > >I didn't say : "only the*interrupt* for WS1 is optional." > > WS1 itself is not optional. The spec says that WS0 and WS1 are > separate events, and doesn't saying anything about either being > optional. The *interrupt* for WS1, however, is optional.
This is a moot point. The distintion between the signal and the interrupt doens't matter here.
I was only asking why the interrupt was optional, and it seems per the spec it's expected to be handed to an agent at a higher exception level.
That implies that the OS should only care about WS0, assuming that I've understood correctly.
Thanks, Mark.
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