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  1. 16 7月, 2013 1 次提交
    • M
      virtio-net: add feature bit for any header s/g · 488f069b
      由 Michael S. Tsirkin 提交于 
      Old qemu versions required that 1st s/g entry is the header.

Since QEMU 1.5, patchset titled "virtio-net: iovec handling cleanup"
removed this limitation but a feature bit is needed so guests know it's
safe to lay out header differently.

This patch applies on top and adds such a feature bit to QEMU.
It is set by default for virtio-net.
virtio net header inline with the data is beneficial
for latency and small packet bandwidth - guest driver
code utilizing this feature has been acked but missed 3.11
by a narrow margin, it's pending for 3.12.

This feature bit is cleared by default when compatibility with old
machine types is requested.

Other performance-sensitive devices (blk and scsi)
don't yet support arbitrary s/g layouts, so
we only set this bit for virtio-net for now.
There are plans to allow arbitrary layouts there, but
no code has been posted yet.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
      488f069b
  3. 04 5月, 2013 1 次提交
  5. 25 4月, 2013 5 次提交
  7. 19 4月, 2013 1 次提交
  9. 17 4月, 2013 1 次提交
  11. 09 4月, 2013 1 次提交
    • P
      hw: move headers to include/ · 0d09e41a
      由 Paolo Bonzini 提交于 
      Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      0d09e41a
  13. 19 3月, 2013 1 次提交
  15. 01 3月, 2013 3 次提交
  17. 08 2月, 2013 1 次提交
  19. 02 2月, 2013 2 次提交
  21. 22 1月, 2013 1 次提交
  23. 08 1月, 2013 2 次提交
  25. 20 12月, 2012 1 次提交
  27. 19 12月, 2012 3 次提交
  29. 30 11月, 2012 1 次提交
  31. 16 11月, 2012 1 次提交
  33. 23 10月, 2012 1 次提交
    • A
      Rename target_phys_addr_t to hwaddr · a8170e5e
      由 Avi Kivity 提交于 
      target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are
reserved) and its purpose doesn't match the name (most target_phys_addr_t
addresses are not target specific).  Replace it with a finger-friendly,
standards conformant hwaddr.

Outstanding patchsets can be fixed up with the command

  git rebase -i --exec 'find -name "*.[ch]"
                        | xargs s/target_phys_addr_t/hwaddr/g' origin
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      a8170e5e
  35. 28 9月, 2012 1 次提交
    • A
      virtio: Introduce virtqueue_get_avail_bytes() · 0d8d7690
      由 Amit Shah 提交于 
      The current virtqueue_avail_bytes() is oddly named, and checks if a
particular number of bytes are available in a vq.  A better API is to
fetch the number of bytes available in the vq, and let the caller do
what's interesting with the numbers.

Introduce virtqueue_get_avail_bytes(), which returns the number of bytes
for buffers marked for both, in as well as out.  virtqueue_avail_bytes()
is made a wrapper over this new function.
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
      0d8d7690
  37. 07 8月, 2012 1 次提交
  39. 17 7月, 2012 1 次提交
  41. 12 7月, 2012 2 次提交
  43. 22 5月, 2012 1 次提交
  45. 19 4月, 2012 1 次提交
  47. 22 2月, 2012 1 次提交
  49. 29 11月, 2011 1 次提交
  51. 17 9月, 2011 1 次提交
  53. 12 9月, 2011 1 次提交
  55. 05 8月, 2011 1 次提交
  57. 05 7月, 2011 1 次提交