On Thu, Feb 16, 2017 at 3:39 PM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 16 February 2017 at 09:54, Vijay Kilari <vijay.kil...@gmail.com> wrote: >> On Tue, Feb 7, 2017 at 8:19 PM, Peter Maydell <peter.mayd...@linaro.org> >> wrote: >>> If you want to do nothing in a read/write function there are >>> already arm_cp_read_zero and arm_cp_write_ignore functions for >>> this. But using the ARM_CP_NOP flag is better still. >> >> With ARM_CP_NOP qemu fails to boot. >> qemu-system-aarch64: KVM_SET_DEVICE_ATTR failed: Invalid argument >> Group 6 attr 0x000000000000c665 > > Not clear to me why using ARM_CP_NOP should result in a KVM > call failure -- can you dig further into why that is happening?
if ARM_CP_NOP is set, .reset function is not called and there by KVM fails when SRE_EL1 is written with 0x0. > > thanks > -- PMM
