Re: [tech-privileged] [RFC PATCH V1] riscv-privileged: Add broadcast mode to sfence.vma

2019-09-19 Thread Benjamin Herrenschmidt
On Thu, 2019-09-19 at 09:04 -0700, Andrew Waterman wrote: > This needs to be discussed and debated at length; proposing edits to > the spec at this stage is putting the cart before the horse! > > We shouldn’t change the definition of the existing SFENCE.VMA > instruction to accomplish this. It’s

Re: [tech-privileged] [RFC PATCH V1] riscv-privileged: Add broadcast mode to sfence.vma

2019-09-19 Thread Guo Ren
Hi, On Fri, Sep 20, 2019 at 12:10 AM Andrew Waterman wrote: > > This needs to be discussed and debated at length; proposing edits to the spec > at this stage is putting the cart before the horse! Agree :) > > We shouldn’t change the definition of the existing SFENCE.VMA instruction to >

Re: [tech-privileged] [RFC PATCH V1] riscv-privileged: Add broadcast mode to sfence.vma

2019-09-19 Thread Andrew Waterman
This needs to be discussed and debated at length; proposing edits to the spec at this stage is putting the cart before the horse! We shouldn’t change the definition of the existing SFENCE.VMA instruction to accomplish this. It’s also not abundantly clear to me that this should be an instruction: