diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-22 16:59:24 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-22 16:59:24 +0000 |
| commit | 3b69e4b9ad3483bafcc3adc948703dc78e84ed33 (patch) | |
| tree | e1fff08e9e152c580dce839151e376395ea3715f /hw | |
| parent | 44e3ee8a2aaee5df49cd440446fee4525144255f (diff) | |
Vectored block device API (Avi Kivity)
Most devices that are capable of DMA are also capable of scatter-gather.
With the memory mapping API, this means that the device code needs to be
able to access discontiguous host memory regions.
For block devices, this translates to vectored I/O. This patch implements
an aynchronous vectored interface for the qemu block devices. At the moment
all I/O is bounced and submitted through the non-vectored API; in the future
we will convert block devices to natively support vectored I/O wherever
possible.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6397 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
0 files changed, 0 insertions, 0 deletions