Re: [PATCH 1/2] arm64: bpf: add 'store immediate' instruction

[Shi, Yang]

Hi folks,

Any more comments on this patch (store immediate only)?

I need more time to add XADD (I'm supposed everyone agrees it is 
equivalent to atomic_add). However, this one is irrelevant to XADD, so 
we may be able to apply it first?

Thanks,
Yang


On 11/12/2015 7:45 PM, Z Lim wrote:
> On Thu, Nov 12, 2015 at 11:33 AM, Shi, Yang <yang.shi@xxxxxxxxxx> wrote:
> > On 11/11/2015 4:39 AM, Will Deacon wrote:
> > > Wait a second, we're both talking rubbish here :) The STR (immediate)
> > > form is referring to the addressing mode, whereas this patch wants to
> > > store an immediate value to memory, which does need moving to a register
> > > first.
> >
> >
> > Yes, the immediate means immediate offset for addressing index. Doesn't mean
> > to store immediate to memory.
> >
> > I don't think any load-store architecture has store immediate instruction.
>
> Indeed. Sorry for the noise.
>
> Somehow Will caught a whiff of whatever I was smoking then :)

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