2ddd24e022
Support DISCARD command is meaningful when eMMC usage is high or there are lots of remove operations. For example, when Guest Android is running, there will be lots of files being created and removed. However, virtio-blk BE does not support DISCARD command, data remove operation in UOS will not trigger erase in eMMC. After period of time, the eMMC will be consumed out, and erase must be done by eMMC firmware before writing any new data. This causes the eMMC performance decrease in the whole system (SOS and UOS). To solve the problem, DISCARD should be supported in virtio-blk BE. Tracked-On: #2011 Signed-off-by: Conghui Chen <conghui.chen@intel.com> Reviewed-by: Shuo A Liu <shuo.a.liu@intel.com> Acked-by: Yu Wang <yu1.wang@intel.com> |
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| arch/x86 | ||
| bios | ||
| core | ||
| hw | ||
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| lib | ||
| samples | ||
| vmcfg | ||
| MAINTAINERS | ||
| Makefile | ||
| README.rst | ||
README.rst
ACRN Device Model ################# Introduction ============ The ACRN Device Model provides **device sharing** capabilities between the Service OS and Guest OSs. It is a component that is used in conjunction with the `ACRN Hypervisor`_ and this is installed within the Service OS. You can find out more about Project ACRN on the `Project ACRN documentation`_ website. .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor .. _`Project ACRN documentation`: https://projectacrn.github.io/