Messages in this thread | | | Date | Wed, 11 Jul 2018 06:24:31 -0700 | From | Tony Lindgren <> | Subject | Re: [PATCH V2] ARM: DRA7/OMAP5: Enable ACTLR[0] (Enable invalidates of BTB) for secondary cores |
| |
* Nishanth Menon <nm@ti.com> [180710 12:50]: > Call secure services to enable ACTLR[0] (Enable invalidates of BTB with > ICIALLU) when branch hardening is enabled for kernel. > > On GP devices OMAP5/DRA7, there is no possibility to update secure > side since "secure world" is ROM and there are no override mechanisms > possible. On HS devices, appropriate PPA should do the workarounds as > well. > > However, the configuration is only done for secondary core, since it is > expected that firmware/bootloader will have enabled the required > configuration for the primary boot core (note: bootloaders typically > will NOT enable secondary processors, since it has no need to do so).
Thanks for updating this. Seems like we should merge this into v4.18-rc cycle as without this the already merged fixes are incomplete. So if no objections, I'm planning to apply this tomorrow.
Regards,
Tony
| |