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

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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).



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