linux-kernel - Re: [PATCH RFC 02/15] KVM: Add kvm/vcpu argument to mark_dirty_page_in

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Date:   Mon, 2 Dec 2019 11:32:22 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Peter Xu <peterx@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>
Subject: Re: [PATCH RFC 02/15] KVM: Add kvm/vcpu argument to
 mark_dirty_page_in_slot

On Fri, Nov 29, 2019 at 04:34:52PM -0500, Peter Xu wrote:

Why?

> From: "Cao, Lei" <Lei.Cao@...atus.com>
> 
> Signed-off-by: Cao, Lei <Lei.Cao@...atus.com>
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> Signed-off-by: Peter Xu <peterx@...hat.com>
> ---
>  virt/kvm/kvm_main.c | 26 +++++++++++++++++---------
>  1 file changed, 17 insertions(+), 9 deletions(-)
> 
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index fac0760c870e..8f8940cc4b84 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -145,7 +145,10 @@ static void hardware_disable_all(void);
>  
>  static void kvm_io_bus_destroy(struct kvm_io_bus *bus);
>  
> -static void mark_page_dirty_in_slot(struct kvm_memory_slot *memslot, gfn_t gfn);
> +static void mark_page_dirty_in_slot(struct kvm *kvm,
> +				    struct kvm_vcpu *vcpu,
> +				    struct kvm_memory_slot *memslot,
> +				    gfn_t gfn);

Why both?  Passing @vcpu gets you @kvm.