8 May
2020
8 May
'20
10:03 p.m.
* Sandipan Das:
Hi Florian,
On 08/05/20 11:31 pm, Florian Weimer wrote:
- Sandipan Das:
The Power ISA mandates that all writes to the Authority Mask Register (AMR) must always be preceded as well as succeeded by a context-synchronizing instruction. This applies to both the privileged and unprivileged variants of the Move To AMR instruction.
Ugh. Do you have a reference for that?
We need to fix this in glibc.
This is from Table 6 of Chapter 11 in page 1134 of Power ISA 3.0B. The document can be found here: https://ibm.ent.box.com/s/1hzcwkwf8rbju5h9iyf44wm94amnlcrv
Thanks a lot! I filed:
https://sourceware.org/bugzilla/show_bug.cgi?id=25954
Florian