Re: [PATCH v6 05/13] arm64: Unconditionally enable IESB on exception entry/return for firmware-first

On 15/01/18 19:38, James Morse wrote: > ARM v8.2 has a feature to add implicit error synchronization barriers > whenever the CPU enters or returns from an exception level. Add this to the > features we always enable. CPUs that don't support this feature will treat > the bit as RES0. > > This

[PATCH v6 05/13] arm64: Unconditionally enable IESB on exception entry/return for firmware-first

ARM v8.2 has a feature to add implicit error synchronization barriers whenever the CPU enters or returns from an exception level. Add this to the features we always enable. CPUs that don't support this feature will treat the bit as RES0. This feature causes RAS errors that are not yet visible to