qemu-devel
[Top][All Lists]
Advanced
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v2 repost 4/7] virtio-balloon: speed up inflate/

From: Dave Hansen
Subject: Re: [Qemu-devel] [PATCH v2 repost 4/7] virtio-balloon: speed up inflate/deflate process
Date: Wed, 27 Jul 2016 09:03:21 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 
On 07/26/2016 06:23 PM, Liang Li wrote:
> +     vb->pfn_limit = VIRTIO_BALLOON_PFNS_LIMIT;
> +     vb->pfn_limit = min(vb->pfn_limit, get_max_pfn());
> +     vb->bmap_len = ALIGN(vb->pfn_limit, BITS_PER_LONG) /
> +              BITS_PER_BYTE + 2 * sizeof(unsigned long);
> +     hdr_len = sizeof(struct balloon_bmap_hdr);
> +     vb->bmap_hdr = kzalloc(hdr_len + vb->bmap_len, GFP_KERNEL);

This ends up doing a 1MB kmalloc() right?  That seems a _bit_ big.  How
big was the pfn buffer before?
reply via email to
[Prev in Thread] Current Thread [Next in Thread]