mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-18 10:34:19 +00:00
5283962eba
ARMv8.3-PAuth adds functionality that supports address authentication of the contents of a register before that register is used as the target of an indirect branch, or as a load. This feature is supported only in AArch64 state. This feature is mandatory in ARMv8.3 implementations. This feature adds several registers to EL1. A new option called CTX_INCLUDE_PAUTH_REGS has been added to select if the TF needs to save them during Non-secure <-> Secure world switches. This option must be enabled if the hardware has the registers or the values will be leaked during world switches. To prevent leaks, this patch also disables pointer authentication in the Secure world if CTX_INCLUDE_PAUTH_REGS is 0. Any attempt to use it will be trapped in EL3. Change-Id: I27beba9907b9a86c6df1d0c5bf6180c972830855 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com> |
||
|---|---|---|
| .. | ||
| arch | ||
| bl1 | ||
| bl2 | ||
| bl2u | ||
| bl31 | ||
| bl32 | ||
| common | ||
| drivers | ||
| dt-bindings | ||
| lib | ||
| plat | ||
| services | ||
| tools_share | ||