linux-kernel - Re: [PATCH 1/1] arch/x86/kvm/vmx.c: use PAGE_ALIGNED instead of IS_ALIGNED(PAGE

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Date:	Mon, 16 Jun 2014 12:12:56 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Fabian Frederick <fabf@...net.be>, linux-kernel@...r.kernel.org
CC:	Gleb Natapov <gleb@...nel.org>
Subject: Re: [PATCH 1/1] arch/x86/kvm/vmx.c: use PAGE_ALIGNED instead of IS_ALIGNED(PAGE_SIZE

Il 14/06/2014 23:44, Fabian Frederick ha scritto:
> use mm.h definition
>
> Cc: Gleb Natapov <gleb@...nel.org>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Signed-off-by: Fabian Frederick <fabf@...net.be>
> ---
>  arch/x86/kvm/vmx.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 801332e..4f84be0 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -5918,7 +5918,7 @@ static int nested_vmx_check_vmptr(struct kvm_vcpu *vcpu, int exit_reason,
>  		 * which replaces physical address width with 32
>  		 *
>  		 */
> -		if (!IS_ALIGNED(vmptr, PAGE_SIZE) || (vmptr >> maxphyaddr)) {
> +		if (!PAGE_ALIGNED(vmptr) || (vmptr >> maxphyaddr)) {
>  			nested_vmx_failInvalid(vcpu);
>  			skip_emulated_instruction(vcpu);
>  			return 1;
> @@ -5936,7 +5936,7 @@ static int nested_vmx_check_vmptr(struct kvm_vcpu *vcpu, int exit_reason,
>  		vmx->nested.vmxon_ptr = vmptr;
>  		break;
>  	case EXIT_REASON_VMCLEAR:
> -		if (!IS_ALIGNED(vmptr, PAGE_SIZE) || (vmptr >> maxphyaddr)) {
> +		if (!PAGE_ALIGNED(vmptr) || (vmptr >> maxphyaddr)) {
>  			nested_vmx_failValid(vcpu,
>  					     VMXERR_VMCLEAR_INVALID_ADDRESS);
>  			skip_emulated_instruction(vcpu);
> @@ -5951,7 +5951,7 @@ static int nested_vmx_check_vmptr(struct kvm_vcpu *vcpu, int exit_reason,
>  		}
>  		break;
>  	case EXIT_REASON_VMPTRLD:
> -		if (!IS_ALIGNED(vmptr, PAGE_SIZE) || (vmptr >> maxphyaddr)) {
> +		if (!PAGE_ALIGNED(vmptr) || (vmptr >> maxphyaddr)) {
>  			nested_vmx_failValid(vcpu,
>  					     VMXERR_VMPTRLD_INVALID_ADDRESS);
>  			skip_emulated_instruction(vcpu);
> @@ -8113,14 +8113,14 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
>  	}
>
>  	if ((vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_MSR_BITMAPS) &&
> -			!IS_ALIGNED(vmcs12->msr_bitmap, PAGE_SIZE)) {
> +			!PAGE_ALIGNED(vmcs12->msr_bitmap)) {
>  		/*TODO: Also verify bits beyond physical address width are 0*/
>  		nested_vmx_failValid(vcpu, VMXERR_ENTRY_INVALID_CONTROL_FIELD);
>  		return 1;
>  	}
>
>  	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES) &&
> -			!IS_ALIGNED(vmcs12->apic_access_addr, PAGE_SIZE)) {
> +			!PAGE_ALIGNED(vmcs12->apic_access_addr)) {
>  		/*TODO: Also verify bits beyond physical address width are 0*/
>  		nested_vmx_failValid(vcpu, VMXERR_ENTRY_INVALID_CONTROL_FIELD);
>  		return 1;
>

Applied, thanks.

Paolo
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