Re: Request for help: upgrade Woody -> Sarge
On Tue, May 31, 2005 at 10:30:42PM +0100, Matthew Wilcox wrote:
> On Tue, May 31, 2005 at 09:45:13PM +0200, Martin Zobel-Helas wrote:
> > One of these things is the upgrade path for machines running with a
> > 64bit capable HP PA-Risc CPUs. If a HPPA is running woody with a 64bit
> > kernel, a newer kernel than 2.4.17 (woody distri kernel) is needed by
> > libc. That's the reason why we provide upgrade kernel. All these things
> > are described on the release notes at [1] and [2] we are currently
> > working on.
>
> I keep hearing that 64-bit thing, but I don't understand it. Why are
> 32-bit machines OK and 64-bit ones not? My understanding is that the
> problem is that libc depends on a very recent kernel version. So the
> problem should be the same on 32 and 64 bit. Can you explain?
The libc.preinst wants you to upgrade to 2.4.19-64 if it sees you have a
64-bit kernel. It's not a requirement, glibc still only wants 2.4.17.
64-bit kernels did not have a working signal trampoline and would write
64-bit values to userspace. This was fixed in 2.4.19-64, and enough
userspace applications required a good ucontenxt that we thought it a
good idea to have the preinst ask you to upgrade.
I say "thought" because you have already convinced me that I was wrong
in this case. Please don't kick my teeth in... :/
c.
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