Re: [PATCH 1/2] arm64: cpufeature: Add GIC CPUIF v4.1 detection

2020-11-12 Thread Lorenzo Pieralisi
On Thu, Nov 12, 2020 at 11:20:08AM +, Marc Zyngier wrote: > On 2020-11-11 16:28, Lorenzo Pieralisi wrote: > > GIC v4.1 introduced changes to the GIC CPU interface; systems that > > integrate CPUs that do not support GIC v4.1 features (as reported in > > the > > ID_AA64PFR0_EL1.GIC bitfield)

Re: [PATCH 1/2] arm64: cpufeature: Add GIC CPUIF v4.1 detection

2020-11-12 Thread Marc Zyngier
On 2020-11-11 16:28, Lorenzo Pieralisi wrote: GIC v4.1 introduced changes to the GIC CPU interface; systems that integrate CPUs that do not support GIC v4.1 features (as reported in the ID_AA64PFR0_EL1.GIC bitfield) and a GIC v4.1 controller must disable in software virtual SGIs support since

[PATCH 1/2] arm64: cpufeature: Add GIC CPUIF v4.1 detection

2020-11-11 Thread Lorenzo Pieralisi
GIC v4.1 introduced changes to the GIC CPU interface; systems that integrate CPUs that do not support GIC v4.1 features (as reported in the ID_AA64PFR0_EL1.GIC bitfield) and a GIC v4.1 controller must disable in software virtual SGIs support since the CPUIF and GIC controller version mismatch