Hi Ayan, On 19/10/2022 16:36, Ayan Kumar Halder wrote: > > > Refer GIC v3 specification (Arm IHI 0069H ID020922), IGRPMODR (similar to > IGROUPR) is relevant only when the guests run in secure/non-secure mode. > As Xen does not implement security extensions for guests, so the registers > are emulated as read as zero/write ignore. > > Signed-off-by: Ayan Kumar Halder <ayank...@amd.com> > --- > > Observed the issue while running Zephyr on R52. > Also, found that KVM has similar behaviour. > > xen/arch/arm/include/asm/gic.h | 2 ++ > xen/arch/arm/vgic-v3.c | 4 ++++ > 2 files changed, 6 insertions(+) > > diff --git a/xen/arch/arm/include/asm/gic.h b/xen/arch/arm/include/asm/gic.h > index 76e3fa5dc4..998dd62651 100644 > --- a/xen/arch/arm/include/asm/gic.h > +++ b/xen/arch/arm/include/asm/gic.h > @@ -48,6 +48,8 @@ > #define GICD_ICFGR1 (0xC04) > #define GICD_ICFGR2 (0xC08) > #define GICD_ICFGRN (0xCFC) > +#define GICD_IGRPMODR (0xD00) > +#define GICD_IGRPMODRN (0xD7C)
These registers are GICv3 specific and as such should be defined in arch/arm/include/asm/gic_v3_defs.h. ~Michal
