Re: [Y2038] [PATCH 3/8] powerpc: fix vdso32 for ppc64le

On Wed, 2019-11-20 at 20:35 +0100, Arnd Bergmann wrote:

On Wed, Nov 20, 2019 at 8:13 PM Ben Hutchings
[off-list ref] wrote:

quoted

On Fri, 2019-11-08 at 21:34 +0100, Arnd Bergmann wrote:

quoted

On little-endian 32-bit application running on 64-bit kernels,
the current vdso would read the wrong half of the xtime seconds
field. Change it to return the lower half like it does on
big-endian.

ppc64le doesn't have 32-bit compat so this is only theoretical.

That is probably true. I only looked at the kernel, which today still
supports compat mode for ppc64le, but I saw the patches to disable
it, and I don't think anyone has even attempted building user space
for it.

COMPAT is still enabled for some reason, but VDSO32 isn't (since 4.2).

Ben.

-- 
Ben Hutchings, Software Developer                         Codethink Ltd
https://www.codethink.co.uk/                 Dale House, 35 Dale Street
                                     Manchester, M1 2HF, United Kingdom