arm64: ignore memory outside of the linear range
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Cover letter [PATCH 0/2] arm64: ignore memory outside of the linear range
Quoted 20 lines · Ard Biesheuvel
Quoted 12 lines · Stuart Yoder
Quoted 6 lines · Stuart Yoder
Quoted 1 line
Are we sending to stable as well?
I've already pushed the patch out without a Cc stable (it's not a regression afaict), so if you want it backported then you'll need to send it to stable separately.
Ok, was asking because of Catalin's previous comment:
Quoted 2 lines
Even though it is not a regression, I think it is a bug fix and it's worth cc'ing stable (though we could push it after 4.3-rc1).
Indeed. Catalin also mentioned that you and he discussed a minimal fix with a cc to stable, only the fix itself was flawed. So let's not make this Stuart's problem, considering that this issue breaks all arm64 systems with 32+ GB of RAM if they follow ARM's own recommendation regarding the physical layout of memory.
Quoted 8 lines
Quoted 2 lines
Ard, are you going to send to stable?
We'll have to wait until the merge window closes, of course, but yes, we should propose it.
@Will: what do you think? It would be nice to have you on record with an opinion rather than leaving it up to Stuart.
This isn't something that has *ever* worked with the arm64 kernel, right? In which case, it's not a regression, it's more like adding support for some systems that we've not supported before. Now, given the nature of the patch, I'm not against stable, but by the time Stuart pointed that out, I'd already pushed the patch and I don't want to rebase our 4.3 queue at this stage.
The best bet is to send this to stable once it's in mainline (i.e. -rc1) and I think it makes sense for Stuart to do that, since he is the one most interested in having that happen.
Will