linux-kernel - Re: [PATCH 2/7] powerpc/watchpoint/kvm: Add infrastructure to support 2nd DAWR

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Message-ID: <04938d51-4b93-d02a-9edd-39ce781b8d5d@linux.ibm.com>
Date:   Wed, 2 Sep 2020 10:42:18 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To:     paulus@...ba.org
Cc:     mpe@...erman.id.au, mikey@...ling.org, npiggin@...il.com,
        pbonzini@...hat.com, christophe.leroy@....fr, jniethe5@...il.com,
        pedromfc@...ibm.com, rogealve@...ibm.com, kvm@...r.kernel.org,
        kvm-ppc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kselftest@...r.kernel.org,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Subject: Re: [PATCH 2/7] powerpc/watchpoint/kvm: Add infrastructure to support
 2nd DAWR

Hi Paul,

> diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
> index 33793444144c..03f401d7be41 100644
> --- a/arch/powerpc/include/asm/hvcall.h
> +++ b/arch/powerpc/include/asm/hvcall.h
> @@ -538,6 +538,8 @@ struct hv_guest_state {
>   	s64 tb_offset;
>   	u64 dawr0;
>   	u64 dawrx0;
> +	u64 dawr1;
> +	u64 dawrx1;
>   	u64 ciabr;
>   	u64 hdec_expiry;
>   	u64 purr;

After this struct, there is a macro HV_GUEST_STATE_VERSION, I guess that
also needs to be incremented because I'm adding new members in the struct?

Thanks,
Ravi