Messages in this thread | | | From | Len Brown <> | Date | Tue, 31 Aug 2021 18:44:28 -0400 | Subject | Re: [PATCH v9 12/26] x86/fpu/xstate: Use feature disable (XFD) to protect dynamic user state |
| |
On Tue, Aug 31, 2021 at 6:39 PM Thiago Macieira <thiago.macieira@intel.com> wrote: > > On Tuesday, 31 August 2021 15:15:55 PDT Len Brown wrote: > > Indeed, I believe that there is universal agreement that a synchronous > > return code > > from a system call is a far superior programming model than decoding > > the location of a failure in a system call. (no, the IP isn't random -- it > > is always the 1st instruction in that thread to touch a TMM register). > > That instruction is actually likely going to be a memory load, probably an > LDTILECFG.
There is no fault on LDTILECONFIG, it will occur on the load tile data. But yes, still a memory load (with a TMM destination)
Len Brown, Intel Open Source Technology Center
| |