Re: [PATCH v4 02/11] x86/startup_64: Replace pointer fixups with RIP-relative references

From: Borislav Petkov
Date: Mon Feb 19 2024 - 05:01:57 EST


On Sat, Feb 17, 2024 at 02:58:29PM +0100, Ard Biesheuvel wrote:
> More testing is always good, but I am not particularly nervous about
> these changes.

Perhaps but there's a big difference between testing everything as much
as one can and *then* queueing it - vs testing a bit, not being really
nervous about the changes and then someone reporting a snafu when the
patches are already in Linus' tree.

Means dropping everything and getting on that. And then imagine a couple
more breakages happening in parallel and needing urgent attention.

Not something you wanna deal with. Speaking from my experience, at
least.

> I could split this up into 3+ patches so we could bisect any resulting
> issues more effectively.

Yeah, splitting changes into separate bits - ala, one logical change per
patch - is always a good idea.

In this particular case, I don't mind splitting them even more so that
it is perfectly clear what happens and looking at those changes doesn't
make people have to go look at the source to figure out what the change
actually looks like applied, in order to fully grok it.

Thx.

--
Regards/Gruss,
Boris.

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