Re: [PATCH] KVM: selftests: arm64: Correct feature test for S1PIE in get-reg-list

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On Fri, 02 Aug 2024 13:43:03 +0100,
Mark Brown <broonie@xxxxxxxxxx> wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> On Fri, Aug 02, 2024 at 10:00:28AM +0100, Marc Zyngier wrote:
> 
> > Also, the test predates the generated stuff by some margin.
> 
> Yeah, there were still defines in the main kernel source that were being
> retyped rather than shared previously which made me wonder.

Definitions in the kernel are likely to exist for a long time though,
as the tool is still pretty primitive and doesn't handle anything that
changes layout (such as any register affected by E2H).

> 
> > Mark Brown <broonie@xxxxxxxxxx> wrote:
> 
> > > I'd certainly be happy to convert, though that does
> > > seem a bit invasive for a fix.
> 
> > Not for a point fix, for sure. And if you do, make sure it is entirely
> > scripted.
> 
> When you say "entirely scripted" here I take it you're referring to the
> list of registers as well, and I guess also to the information about
> what is enumerated by which ID register values?

The register list is indeed the #1 offender, and that should just be a
script that goes over all the occurrences of ARM64_SYS_REG() and
replace the encoding with something that uses the symbolic name.

For the rest (shifts and stuff), we can probably do that by hand
(there are only a few occurrences).

	M.

-- 
Without deviation from the norm, progress is not possible.




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