On Sat, 19 Sep 2020 12:00:25 -0300, Gustavo Romero wrote:
> Althought AMR is stashed in the checkpoint area, currently we don't save
> it to the per thread checkpoint struct after a treclaim and so we don't
> restore it either from that struct when we trechkpt. As a consequence when
> the transaction is later rolled back the kernel space AMR value when the
> trechkpt was done appears in userspace.
>
> That commit saves and restores AMR accordingly on treclaim and trechkpt.
> Since AMR value is also used in kernel space in other functions, it also
> takes care of stashing kernel live AMR into the stack before treclaim and
> before trechkpt, restoring it later, just before returning from tm_reclaim
> and __tm_recheckpoint.
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/tm: Save and restore AMR on treclaim and trechkpt
https://git.kernel.org/powerpc/c/d0ffdee8ff01fb21085d835ee54dc8c1c4d19226
cheers
