Re: [PATCH v1] s390: ipl: fix physical-virtual confusion for diag308

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Quoting Alexander Gordeev (2023-03-10 13:42:47)
> On Fri, Mar 10, 2023 at 01:34:27PM +0100, Alexander Gordeev wrote:
> > > Note that several callers pass NULL as addr, this is fine since
> > > virt_to_phys(0) == 0.
> 
> Missed that.
> 
> Are you sure? Quickly checked ppc64, x86 and arm64 - they do not 
> seem adhere virt_to_phys(0) == 0, nor the VR kernel (so far).

I think we do, but you are right - it might change in the future, so it's better to be on the safe side. Fixed in v2, thanks.




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