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Diffstat (limited to 'introduction.tex')
| -rw-r--r-- | introduction.tex | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/introduction.tex b/introduction.tex index 83b01f0..8e08d02 100644 --- a/introduction.tex +++ b/introduction.tex @@ -13,14 +13,15 @@ inter-guest communication) requires copying. } Efficient: Virtio devices consist of rings of descriptors - for input and output, which are neatly separated to avoid cache + for both input and output, which are neatly laid out to avoid cache effects from both driver and device writing to the same cache lines. Standard: Virtio makes no assumptions about the environment in which - it operates, beyond supporting the bus attaching the device. Virtio + it operates, beyond supporting the bus to which device is attached. + In this specification, virtio devices are implemented over PCI and other buses, and earlier drafts - been implemented on other buses not included in this spec. + have been implemented on other buses not included here. \footnote{The Linux implementation further separates the PCI virtio code from the specific virtio drivers: these drivers are shared with the non-PCI implementations (currently lguest and S/390). |