Hi Marc, On 1/23/2021 6:28 AM, Catalin Marinas wrote:
On Mon, Jan 18, 2021 at 09:45:33AM +0000, Marc Zyngier wrote:In order to be able to disable Pointer Authentication at runtime, whether it is for testing purposes, or to work around HW issues, let's add support for overriding the ID_AA64ISAR1_EL1.{GPI,GPA,API,APA} fields. This is further mapped on the arm64.nopauth command-line alias. Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Verified this Series for PAC control feature from command line. with arm64.nopauth, we could see PAUTH is disabled on both primary and secondary cores as expected.
HWCAPs show no PAC support and kernel instructions are being treated as NOPs.
Tested-by: Srinivas Ramana <sramana@xxxxxxxxxxxxxx> _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
