Re: [PATCH v4 19/21] arm64: cpufeatures: Allow disabling of BTI from the command-line

2021-01-26 Thread Srinivas Ramana
Hi Marc, On 1/23/2021 6:24 AM, Catalin Marinas wrote: On Mon, Jan 18, 2021 at 09:45:31AM +, Marc Zyngier wrote: In order to be able to disable BTI at runtime, whether it is for testing purposes, or to work around HW issues, let's add support for overriding the ID_AA64PFR1_EL1.BTI field. Th

Re: [PATCH v4 19/21] arm64: cpufeatures: Allow disabling of BTI from the command-line

2021-01-23 Thread Catalin Marinas
On Mon, Jan 18, 2021 at 09:45:31AM +, Marc Zyngier wrote: > In order to be able to disable BTI at runtime, whether it is > for testing purposes, or to work around HW issues, let's add > support for overriding the ID_AA64PFR1_EL1.BTI field. > > This is further mapped on the arm64.nobti command-

[PATCH v4 19/21] arm64: cpufeatures: Allow disabling of BTI from the command-line

2021-01-18 Thread Marc Zyngier
In order to be able to disable BTI at runtime, whether it is for testing purposes, or to work around HW issues, let's add support for overriding the ID_AA64PFR1_EL1.BTI field. This is further mapped on the arm64.nobti command-line alias. Signed-off-by: Marc Zyngier --- Documentation/admin-guide