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Re: [Qemu-arm] [PATCH v7 RESEND 5/5] hw/intc/arm_gicv3_kvm: Reset GICv3

From: Vijay Kilari
Subject: Re: [Qemu-arm] [PATCH v7 RESEND 5/5] hw/intc/arm_gicv3_kvm: Reset GICv3 cpu interface registers
Date: Thu, 16 Feb 2017 16:58:40 +0530

On Thu, Feb 16, 2017 at 3:39 PM, Peter Maydell <address@hidden> wrote:
> On 16 February 2017 at 09:54, Vijay Kilari <address@hidden> wrote:
>> On Tue, Feb 7, 2017 at 8:19 PM, Peter Maydell <address@hidden> 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

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