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 <h...@lst.de>

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