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  1. 07 3月, 2009 3 次提交
  3. 23 2月, 2009 1 次提交
  5. 19 2月, 2009 1 次提交
    • A
      Fix cpu_physical_memory_rw() for 64-bit I/O accesses · 6c2934db
      由 aurel32 提交于 
      KVM uses cpu_physical_memory_rw() to access the I/O devices. When a
read or write with a length of 8-byte is requested, it is split into 2
4-byte accesses.

This has been broken in revision 5849. After this revision, only the
first 4 bytes are actually read/write to the device, as the target
address is changed, so on the next iteration of the loop the next 4
bytes are actually read/written elsewhere (in the RAM for the graphic
card).

This patch fixes screen corruption (and most probably data corruption)
with FreeBSD/amd64. Bug #2556746 in KVM bugzilla.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6628 c046a42c-6fe2-441c-8c8c-71466251a162
      6c2934db
  7. 11 2月, 2009 1 次提交
  9. 06 2月, 2009 1 次提交
  11. 27 1月, 2009 1 次提交
  13. 23 1月, 2009 2 次提交
  15. 16 1月, 2009 3 次提交
  17. 05 1月, 2009 1 次提交
  19. 29 12月, 2008 1 次提交
  21. 10 12月, 2008 1 次提交
    • A
      KVM: Coalesced MMIO support · f65ed4c1
      由 aliguori 提交于 
      MMIO exits are more expensive in KVM or Xen than in QEMU because they 
involve, at least, privilege transitions.  However, MMIO write 
operations can be effectively batched if those writes do not have side 
effects.

Good examples of this include VGA pixel operations when in a planar 
mode.  As it turns out, we can get a nice boost in other areas too.  
Laurent mentioned a 9.7% performance boost in iperf with the coalesced 
MMIO changes for the e1000 when he originally posted this work for KVM.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5961 c046a42c-6fe2-441c-8c8c-71466251a162
      f65ed4c1
  23. 09 12月, 2008 1 次提交
  25. 02 12月, 2008 2 次提交
  27. 01 12月, 2008 2 次提交
  29. 26 11月, 2008 1 次提交
  31. 25 11月, 2008 1 次提交
  33. 19 11月, 2008 8 次提交
  35. 12 11月, 2008 2 次提交
  37. 06 11月, 2008 2 次提交
    • A
      Win32: Fix warnings · 978d5d73
      由 aurel32 提交于 
      Attached patch fixes some warnings which only happen on Windows.
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5639 c046a42c-6fe2-441c-8c8c-71466251a162
      978d5d73
    • A
      Add KVM support to QEMU · 7ba1e619
      由 aliguori 提交于 
      This patch adds very basic KVM support.  KVM is a kernel module for Linux that
allows userspace programs to make use of hardware virtualization support.  It
current supports x86 hardware virtualization using Intel VT-x or AMD-V.  It
also supports IA64 VT-i, PPC 440, and S390.

This patch only implements the bare minimum support to get a guest booting.  It
has very little impact the rest of QEMU and attempts to integrate nicely with
the rest of QEMU.

Even though this implementation is basic, it is significantly faster than TCG.
Booting and shutting down a Linux guest:

w/TCG:  1:32.36 elapsed  84% CPU

w/KVM:  0:31.14 elapsed  59% CPU

Right now, KVM is disabled by default and must be explicitly enabled with
 -enable-kvm.  We can enable it by default later when we have had better
testing.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5627 c046a42c-6fe2-441c-8c8c-71466251a162
      7ba1e619
  39. 28 10月, 2008 1 次提交
  41. 07 10月, 2008 1 次提交
  43. 06 10月, 2008 1 次提交
  45. 05 10月, 2008 1 次提交
  47. 04 10月, 2008 1 次提交