linux-kernel - Re: [PATCH 2/2] xen/swiotlb: check if the swiotlb has already been initialized

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Date:   Wed, 12 May 2021 13:10:42 -0700 (PDT)
From:   Stefano Stabellini <sstabellini@...nel.org>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
cc:     Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org, hch@....de,
        linux-kernel@...r.kernel.org,
        Stefano Stabellini <stefano.stabellini@...inx.com>,
        jgross@...e.com
Subject: Re: [PATCH 2/2] xen/swiotlb: check if the swiotlb has already been
 initialized

On Tue, 11 May 2021, Boris Ostrovsky wrote:
> On 5/11/21 1:41 PM, Stefano Stabellini wrote:
> > --- a/drivers/xen/swiotlb-xen.c
> > +++ b/drivers/xen/swiotlb-xen.c
> > @@ -164,6 +164,11 @@ int __ref xen_swiotlb_init(void)
> >  	int rc = -ENOMEM;
> >  	char *start;
> >  
> > +	if (io_tlb_default_mem != NULL) {
> > +		printk(KERN_WARNING "Xen-SWIOTLB: swiotlb buffer already initialized\n");
> 
> 
> pr_warn().
> 
> 
> Reviewed-by: Boris Ostrovsky <boris.ostrvsky@...cle.com>

Thank you! I'll send a v2 shortly with the change to pr_warn and your
reviewed-by.