[Mesa-dev] [Bug 100073] Shader Disk Cache 32/64 bit detection has a flaw. Missed existence of x32 ABI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100073

--- Comment #16 from oiaohm at gmail.com ---
(In reply to Ilia Mirkin from comment #14)
> (In reply to oiaohm from comment #13)
> > All I can guess is you are not interested in solving problem for my workflow
> > so I should not bother opening bugs in future.
> 
> I have been trying to get you to explain your workflow, which you hadn't up
> until now.
> 
> To summarize, your workflow is to run applications using multiple
> architectures (and thus multiple library binaries) while having $HOME set to
> the same directory.
> 
> Is that an accurate assessment? Is there more to it?

That is close enough.  Exact would require the following extra
Multi architectures using qemu usermode registered in binfmt_misc so they
binary all straight up run.   So its 1 system and operating system running
applications from multiple architectures.   

But these bits really don't change the problem most likely can be ignored. 

Yes they all use 1 home directory someone NFS sharing a home directory between
computer of different architectures could also run into a problem with just
splitting 32 and 64 bit instead of using a triplet.

Darren Salt patch using triplet
https://patchwork.freedesktop.org/patch/141891/
Will make my workflow work and others with shared home directories with
multi-architectures by other means.  I don't see how this would break workflows
what the patch I class as defective fixed other than leaving behind not used
cache directories.

Of course there is still those who want to custom build own instances of Mesa
who I think with the triplet option could be told to use a custom triplet.  If
they want to stick date/time/version in the triplet they can.

I have not considered the case of Multi different distributions sharing the
same home directory but that is broken most of the time anyhow this would most
likely require using version tag or something like that.   Debian same version
different architecture sharing home directory has been fairly safe.

If someone wants Multi different distribution support using a single home
directory I think that should be a bug in it own right.

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