linux-kernel - Re: [PATCH 3/3] Documentation: KVM: add API issues section

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Message-ID: <a35f9408-9d54-654c-6639-64192f03ba3b@redhat.com>
Date:   Wed, 23 Mar 2022 22:32:50 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Oliver Upton <oupton@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        mlevitsk@...hat.com, jmattson@...gle.com
Subject: Re: [PATCH 3/3] Documentation: KVM: add API issues section

On 3/23/22 19:16, Oliver Upton wrote:
> Do you think we should vent about our mistakes inline with the
> descriptions of the corresponding UAPI? One example that comes to mind
> is ARM's CNTV_CVAL_EL0/CNTVCT_EL0 mixup, which is mentioned in 4.68
> 'KVM_SET_ONE_REG'. That, of course, doesn't cover the
> previously-undocumented bits of UAPI that are problematic:)

It depends.  My intention was to use this document more for hidden 
interdependencies, in this case between KVM_GET_SUPPORTED_CPUID and 
KVM_CREATE_IRQCHIP, KVM_ENABLE_CAP(KVM_CAP_IRQCHIP_SPLIT), 
KVM_CAP_TSC_DEADLINE_TIMER.

Paolo