On Fri, May 1, 2020 at 11:57 AM Jose Martins <josemartin...@gmail.com> wrote: > > Reached out to Andrew Waterman. This was his response: > > "I think the encoding of the privileged modes is a red herring. HS is > inherently more privileged than VS, since it controls memory > protection and interrupt delegation for VS. > Certainly the intent is that HS-mode interrupts are always enabled > while executing in VS-mode. Otherwise, badly behaved VS-mode software > could starve HS-mode of interrupts."
Ok, so in which case the hs_sie variable should be removed. Alistair > > So my assumption was correct. > > Jose > > On Thu, 30 Apr 2020 at 22:47, Jose Martins <josemartin...@gmail.com> wrote: > > > > > I'm not sure HS is a higher privilege mode. > > > > > > HS is privilege encoding 1, which is the same as VS (VU is obviously > > > lower). > > > > I just checked the spec and it doesn't actually, explicitly state that > > HS is a higher-privilege mode than VS. I thought this was something > > implicit, but you might be right. I'll try to reach out to the spec > > authors to clarify this. > > > > Jose
