linux-kernel - Re: [PATCH v9 28/40] KVM: selftests: Fill in vm->vpages_mapped bitmap in virt

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Date:   Wed, 3 Aug 2022 16:29:40 +0200
From:   Andrew Jones <andrew.jones@...ux.dev>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Siddharth Chandrasekaran <sidcha@...zon.de>,
        Yuan Yao <yuan.yao@...ux.intel.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 28/40] KVM: selftests: Fill in vm->vpages_mapped
 bitmap in virt_map() too

On Wed, Aug 03, 2022 at 03:46:35PM +0200, Vitaly Kuznetsov wrote:
> Similar to vm_vaddr_alloc(), virt_map() needs to reflect the mapping
> in vm->vpages_mapped.
> 
> While on it, remove unneeded code wraping in vm_vaddr_alloc().
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> ---
>  tools/testing/selftests/kvm/lib/kvm_util.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
> index 9889fe0d8919..ad9e15d4c6a9 100644
> --- a/tools/testing/selftests/kvm/lib/kvm_util.c
> +++ b/tools/testing/selftests/kvm/lib/kvm_util.c
> @@ -1214,8 +1214,7 @@ vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min)
>  
>  		virt_pg_map(vm, vaddr, paddr);
>  
> -		sparsebit_set(vm->vpages_mapped,
> -			vaddr >> vm->page_shift);
> +		sparsebit_set(vm->vpages_mapped, vaddr >> vm->page_shift);
>  	}
>  
>  	return vaddr_start;
> @@ -1288,6 +1287,8 @@ void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr,
>  		virt_pg_map(vm, vaddr, paddr);
>  		vaddr += page_size;
>  		paddr += page_size;
> +
> +		sparsebit_set(vm->vpages_mapped, vaddr >> vm->page_shift);
>  	}
>  }
>  
> -- 
> 2.35.3
>

Reviewed-by: Andrew Jones <andrew.jones@...ux.dev>