lkml.org 
[lkml]   [2017]   [Jul]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v12 5/8] virtio-balloon: VIRTIO_BALLOON_F_SG
    On 07/31/2017 12:20 AM, Michael S. Tsirkin wrote:
    > On Sun, Jul 30, 2017 at 07:18:33PM +0300, Michael S. Tsirkin wrote:
    >> On Sun, Jul 30, 2017 at 05:59:17AM +0000, Wang, Wei W wrote:
    >> That's a hypervisor implementation detail. From guest point of view,
    >> discarding contents can not be distinguished from writing old contents.
    >>
    > Besides, ignoring the free page tricks, consider regular ballooning.
    > We map page with DONTNEED then back with WILLNEED. Result is
    > getting a zero page. So at least one of deflate/inflate should be input.
    > I'd say both for symmetry.
    >

    OK, I see the point. Thanks.

    Best,
    Wei

    \
     
     \ /
      Last update: 2017-07-31 14:33    [W:2.662 / U:0.336 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site