linux-kernel - Re: [PATCH v9 01/14] swiotlb: Refactor swiotlb init functions

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Message-ID: <CALiNf29cE-T7xf+nUZF2pjT8osaXj+wb4MibtdSkAU_K13wuMw@mail.gmail.com>
Date:   Tue, 15 Jun 2021 12:06:06 +0800
From:   Claire Chang <tientzu@...omium.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Rob Herring <robh+dt@...nel.org>, mpe@...erman.id.au,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
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Subject: Re: [PATCH v9 01/14] swiotlb: Refactor swiotlb init functions

On Mon, Jun 14, 2021 at 2:16 PM Christoph Hellwig <hch@....de> wrote:
>
> On Fri, Jun 11, 2021 at 11:26:46PM +0800, Claire Chang wrote:
> > +     spin_lock_init(&mem->lock);
> > +     for (i = 0; i < mem->nslabs; i++) {
> > +             mem->slots[i].list = IO_TLB_SEGSIZE - io_tlb_offset(i);
> > +             mem->slots[i].orig_addr = INVALID_PHYS_ADDR;
> > +             mem->slots[i].alloc_size = 0;
> > +     }
> > +
> > +     if (memory_decrypted)
> > +             set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT);
> > +     memset(vaddr, 0, bytes);
>
> We don't really need to do this call before the memset.  Which means we
> can just move it to the callers that care instead of having a bool
> argument.
>
> Otherwise looks good:
>
> Reviewed-by: Christoph Hellwig <hch@....de>

Thanks for the review. Will wait more days for other reviews and send
v10 to address the comments in this and other patches.