On Tue, Oct 31, 2017 at 06:04:19PM -0400, Jon Masters wrote:

On 10/31/2017 02:30 PM, Mark Salyzyn wrote:

quoted

Take an effort to recode the arm64 vdso code from assembler to C
previously submitted by Andrew Pinski [off-list ref], rework
it for use in both arm and arm64, overlapping any optimizations
for each architecture. But instead of landing it in arm64, land the
result into lib/vdso and unify both implementations to simplify
future maintenance. This will act as the basis for implementing
arm64 vdso32 in the future.

In the original patch series, our QE folks found a problem that lead to
its revertion from our internal trees. I've pinged them to check this
latest version and followup if we see the same failures now.

Could you elaborate a bit on the problem you found, please? Even if you
don't see it with this series, it doesn't mean it isn't lurking somewhere
else (potentially even in mainline!).

Will