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| author | Wei Liu <wei.liu2@citrix.com> | 2013-08-26 11:59:37 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-29 05:18:04 (GMT) |
| commit | 43e9d1943278e96150b449ea1fa81f4ae27729d5 (patch) | |
| tree | 76c3752f6a2c4f6284b55b783ba78d686b36da14 /drivers/gpu/drm/Kconfig | |
| parent | 5b2941b18dc5f60a5c14a5c15693f9c58b0dd922 (diff) | |
| download | linux-fsl-qoriq-43e9d1943278e96150b449ea1fa81f4ae27729d5.tar.xz | |
xen-netback: remove page tracking facility
The data flow from DomU to DomU on the same host in current copying
scheme with tracking facility:
copy
DomU --------> Dom0 DomU
| ^
|____________________________|
copy
The page in Dom0 is a page with valid MFN. So we can always copy from
page Dom0, thus removing the need for a tracking facility.
copy copy
DomU --------> Dom0 -------> DomU
Simple iperf test shows no performance regression (obviously we copy
twice either way):
W/ tracking: ~5.3Gb/s
W/o tracking: ~5.4Gb/s
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Matt Wilson <msw@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/gpu/drm/Kconfig')
0 files changed, 0 insertions, 0 deletions