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Bug#918664: linux-latest: please provide a meta package for a sane architecture-specific default

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On Tue, 2019-01-08 at 10:50 +0100, Johannes Schauer wrote:
> Hi Ben,
> 
> Quoting Ben Hutchings (2019-01-08 09:46:43)
> > > I know that the right kernel image is not a function of the
> > > Debian
> > > architecture alone. But this meta-package is not supposed to
> > > replace
> > > kernel selection for d-i or the like. It is meant to be one
> > > central
> > > place to encode a sane default mapping in the Debian linux kernel
> > > package instead of (poorly) replicating such a mapping in
> > > individual
> > > packages.
> > 
> > For many architectures there is no single good default - that's the
> > main reason why we have multiple flavours.
> 
> But for other architectures there is.
> 
> So this binary package could be built for architectures where a
> reasonable
> default exists but not for those where it doesn't.

Then it wouldn't be safe to depend on it, so how would it be used?

> Package: linux-image-default
> Architecture: i386, alpha, amd64, arm64, armhf, ia64, m68k, armel,
> hppa, powerpc, ppc64, ppc64el, powerpcspe, riscv64, s390x, sparc64
> Depends:
>  linux-image-686 [i386],

Most i386 systems should use 686-pae.  But some can't (otherwise we
would drop 686).

>  linux-image-alpha-generic [alpha],

Useless for SMP systems.

>  linux-image-amd64 [amd64],
>  linux-image-arm64 [arm64],

Right.

(Although for cloud deployments cloud-amd64 and (proposed)
cloud-arm64 may be more suitable.)

>  linux-image-armmp [armhf],

Some armhf systems need armmp-lpae to access all their RAM.

>  linux-image-itanium [ia64],

I think this is rather slow on later Itanium chips.

>  linux-image-m68k [m68k],
>  linux-image-marvell [armel],

Right.

>  linux-image-parisc [hppa],

I don't think this will run on 64-bit systems.

>  linux-image-powerpc [powerpc],

This won't run on most 64-bit systems (probably the majority).

>  linux-image-powerpc64 [ppc64],
>  linux-image-powerpc64le [ppc64el],
>  linux-image-powerpcspe [powerpcspe],
>  linux-image-riscv64 [riscv64],
>  linux-image-s390x [s390x],

Right.

>  linux-image-sparc64 [sparc64]

Useless for SMP systems.

> Maybe some of the above still has to be removed but do really too few
> architectures remain where a sane choice exists?

If there is only one sensible choice then we only build one flavour.

Ben.

-- 
Ben Hutchings
Any smoothly functioning technology is indistinguishable
from a rigged demo.

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Bug#918664: linux-latest: please provide a meta package for a sane architecture-specific default Johannes 'josch' Schauer <josch@debian.org> - 2019-01-08 09:30 +0100
  Bug#918664: linux-latest: please provide a meta package for a sane architecture-specific default Ben Hutchings <ben@decadent.org.uk> - 2019-01-08 10:00 +0100
    Bug#918664: linux-latest: please provide a meta package for a sane architecture-specific default Johannes Schauer <josch@debian.org> - 2019-01-08 11:00 +0100
      Bug#918664: linux-latest: please provide a meta package for a sane architecture-specific default Ben Hutchings <ben@decadent.org.uk> - 2019-01-08 22:50 +0100
  Processed: Re: Bug#918664: linux-latest: please provide a meta  package for a sane architecture-specific default "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-01-08 10:00 +0100
  Bug#918664: marked as done (linux-latest: please provide a meta  package for a sane architecture-specific default) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-10-26 09:20 +0200

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