linux-kernel - Re: [PATCH 1/2] KVM: X86: Move ignore

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Message-ID: <20200709183454.GH199122@xz-x1>
Date:   Thu, 9 Jul 2020 14:34:54 -0400
From:   Peter Xu <peterx@...hat.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Vitaly Kuznetsov <vkuznets@...hat.com>
Subject: Re: [PATCH 1/2] KVM: X86: Move ignore_msrs handling upper the stack

On Thu, Jul 09, 2020 at 08:24:03PM +0200, Paolo Bonzini wrote:
> On 09/07/20 20:22, Peter Xu wrote:
> >>> So I think Peter's patch is fine, but (possibly on top as a third patch)
> >>> __must_check should be added to MSR getters and setters.  Also one
> >>> possibility is to return -EINVAL for invalid MSRs.
> > Yeah I can add another patch for that.  Also if to repost, I tend to also
> > introduce KVM_MSR_RET_[OK|ERROR] too, which seems to be cleaner when we had
> > KVM_MSR_RET_INVALID.
> 
> You can use either that or 0/1/-EINVAL.  I would be fine with that to
> keep the patch small.

Yeah -EINVAL looks good.  Then, do you want me to s/1/-EFAULT/ altogether?

-- 
Peter Xu