Re: regression: Bug 215601 - gcc segv at startup on ia64

[Magnus Groß <magnus.gross@xxxxxxxxxxxxxx>]

> When the kernel tries to map these with a combined allocation, it asks
> for a giant mmap of the file, but the file is, of course, not at all
> that large, and the mapping is rejected.

> So... I'm trying to think about how best to deal with this. If I or
> anyone else can't think of an elegant solution, I'll send a revert for
> the offending patch next week.

Shouldn't we just be able to patch total_mapping_size() again to instead
sum up all p_memsz fields, instead of comparing minimum and maximum
p_vaddr?

Runtime complexity would be the same as we are iterating through all
segments already anyway. And I would also argue that is the behaviour
that one wanted to see in that function anyway.

If you agree with this, I can post a patch, but I would need to know
what tree to base it on to avoid merge conflicts with the just merged
patch from Alexey.

--
Magnus