I thought it might be GCC 4.1, so I tried 2 things:
* build with gcc 3.4 on another host
* switch to gcc 3.4 on that system for the kernel build
The resulting (statically linked) kernel runs fine on x86 but not at all 
on the amd64 hosts:
(..)
UML running in SKAS0 mode
remove_umid_dir - actually_do_remove failed with err = -2
 >#

Looks like the 64-bit kernels work ok though. How weird.

Any ideas?

Antoine Martin wrote:
> Blaisorblade wrote:
>> On Tuesday 05 September 2006 02:47, Antoine Martin wrote:
>>> I've upgraded a Gentoo amd64 box to the latest gcc (4.1.1) and glibc
>>> (2.4-r3). glibc 2.4 is "nptlonly" (at least on gentoo?)
>> I'd be curious about which is the host kernel and its configuration - 
>> there 
> Host kernel is 2.6.17.11-skas3-v9-pre9 (AMD64).
> 
>> are a couple of compatibility options for "old" glibc's.
> I am not aware of any such options, can you be a bit more specific?
> (I can send you the config off-list if necessary or even give you access 
> to a box)
> 
>> I recall only notes about the vsyscall page (which has been moved to 
>> randomized address, but this was already in Fedora, maybe, so we 
>> should support it), but I'm curious about other stuff.
> Just let me know what you need.
> There are a few servers I would like to be able to reboot without 
> loosing the UML instances running on them. At the moment, I am just 
> relying on the guests not needing to be restarted (most of them have 
> long uptime so that's no too bad). The ones that needed a restart were 
> move other hosts (x86). And I will run out of x86 hosts eventually...
> 
> Antoine
> 


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