Re: [RFC5 PATCH v6 00/21] ILP32 for ARM64

Yury Norov
2016-02-19T13:00:18Z

On Fri, Feb 19, 2016 at 09:23:35AM +0100, Arnd Bergmann wrote:
> On Friday 19 February 2016 01:35:06 Yury Norov wrote:
> >
> > Hi Bamvor, everybody,
> >
> > I have new glibc that follows new ABI:
> > https://github.com/norov/glibc/tree/new-api
>
> Ah, very good!
>
> > It's very draft and dirty, but you can try it with RFC5.
> > My fail list for ltplite looks like this:
> > pipeio_4 FAIL 11
> > abort01 FAIL 2
> > clone02 FAIL 4
> > kill10 FAIL 2
> > kill11 FAIL 2
> > lstat01A FAIL 1
> > lstat02 FAIL 1
> > mmap16 FAIL 6
> > nanosleep03 FAIL 1
> > nftw01 FAIL 1
> > nftw6401 FAIL 1
> > open12 FAIL 2
> > pathconf01 FAIL 1
> > pipe07 FAIL 2
> > profil01 FAIL 11
> > readdir01 FAIL 1
> > readlink01A FAIL 1
> > rename11 FAIL 2
> > rmdir02 FAIL 2
> > sigaltstack01 FAIL 1
> > sigaltstack02 FAIL 1
> > stat03 FAIL 1
> > stat04 FAIL 1
> > stat06 FAIL 1
> > umount2_01 FAIL 2
> > umount2_02 FAIL 2
> > umount2_03 FAIL 2
> > utime06 FAIL 2
> > writev01 FAIL 1
> > mtest06 FAIL 11
> > rwtest01 FAIL 2
> > rwtest02 FAIL 2
> > rwtest03 FAIL 2
> > rwtest04 FAIL 2
> > rwtest05 FAIL 2
>
> I have no idea whether this is good news or bad news ;-)
>
> In https://github.com/norov/glibc/commit/351b8728fdb365bd4852ac113601ddf38153fdfc
> I see that you are passing __IPC_64, I thought we had already resolved
> that in the kernel. We might need to go back to this.
>

I'm still on 4.4 kernel. So I need it. I'll drop __IPC_64 if unneeded on
rebase. Usually I rebase on rc5 or rc6.

> In https://github.com/norov/glibc/commit/5d4290435e428267171ece871539b76e1d079d11
> you are defining a struct __kernel_stat64 in the glibc. Is this the expected
> way to do it? I would have thought you'd get the definition from the kernel
> headers.
>
> Arnd
>

Almost all ports define its own struct kernel_stat / kernel_stat64.
in "kernel_header.h" See mips, spark, alpha, i386... Some also define
function xstat_conv or similar. With all that defined, it's expected
that one of generic xstat wrappers will work properly. I tried all,
and noone got working, so I wrote this hack to make it work somehow.

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