Replace '-enable-kvm' with '-accel kvm' in docs and help texts

The preferred way to select the KVM accelerator is to use "-accel kvm"
these days, so let's be consistent in our documentation and help texts.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1528866321-23886-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

docs/COLO-FT.txt

@@ -113,16 +113,16 @@ by using 'x-colo-lost-heartbeat' command.
 == Test procedure ==
 1. Startup qemu
 Primary:
-# qemu-kvm -enable-kvm -m 2048 -smp 2 -qmp stdio -vnc :7 -name primary \
-  -device piix3-usb-uhci \
+# qemu-system-x86_64 -accel kvm -m 2048 -smp 2 -qmp stdio -name primary \
+  -device piix3-usb-uhci -vnc :7 \
   -device usb-tablet -netdev tap,id=hn0,vhost=off \
   -device virtio-net-pci,id=net-pci0,netdev=hn0 \
   -drive if=virtio,id=primary-disk0,driver=quorum,read-pattern=fifo,vote-threshold=1,\
          children.0.file.filename=1.raw,\
          children.0.driver=raw -S
 Secondary:
-# qemu-kvm -enable-kvm -m 2048 -smp 2 -qmp stdio -vnc :7 -name secondary \
-  -device piix3-usb-uhci \
+# qemu-system-x86_64 -accel kvm -m 2048 -smp 2 -qmp stdio -name secondary \
+  -device piix3-usb-uhci -vnc :7 \
   -device usb-tablet -netdev tap,id=hn0,vhost=off \
   -device virtio-net-pci,id=net-pci0,netdev=hn0 \
   -drive if=none,id=secondary-disk0,file.filename=1.raw,driver=raw,node-name=node0 \

docs/can.txt

@@ -52,7 +52,7 @@ The ''kvaser_pci'' board/device model is compatible with and has been tested wit
 The tested setup was Linux 4.9 kernel on the host and guest side.
 Example for qemu-system-x86_64:
 
-    qemu-system-x86_64 -enable-kvm -kernel /boot/vmlinuz-4.9.0-4-amd64 \
+    qemu-system-x86_64 -accel kvm -kernel /boot/vmlinuz-4.9.0-4-amd64 \
       -initrd ramdisk.cpio \
       -virtfs local,path=shareddir,security_model=none,mount_tag=shareddir \
       -object can-bus,id=canbus0 \
@@ -104,4 +104,4 @@ Links to other resources
      Slides
      http://rtime.felk.cvut.cz/publications/public/rtlws2015-qemu-can-slides.pdf
  (5) Linux SocketCAN utilities
-     https://github.com/linux-can/can-utils/
+     https://github.com/linux-can/can-utils/

docs/multi-thread-compression.txt

@@ -62,7 +62,7 @@ RAM: 128G
 NIC: Intel I350 (10/100/1000Mbps)
 Host OS: CentOS 7 64-bit
 Guest OS: RHEL 6.5 64-bit
-Parameter: qemu-system-x86_64 -enable-kvm -smp 4 -m 4096
+Parameter: qemu-system-x86_64 -accel kvm -smp 4 -m 4096
  /share/ia32e_rhel6u5.qcow -monitor stdio
 
 There is no additional application is running on the guest when doing

docs/multiseat.txt

@@ -18,7 +18,7 @@ or
 
 Next put together the qemu command line (sdk/gtk):
 
-qemu	-enable-kvm -usb $memory $disk $whatever \
+qemu	-accel kvm -usb $memory $disk $whatever \
 	-display [ sdl | gtk ] \
 	-vga std \
 	-device usb-tablet

docs/specs/tpm.txt

@@ -98,7 +98,7 @@ QEMU files related to the TPM passthrough device:
 Command line to start QEMU with the TPM passthrough device using the host's
 hardware TPM /dev/tpm0:
 
-qemu-system-x86_64 -display sdl -enable-kvm \
+qemu-system-x86_64 -display sdl -accel kvm \
   -m 1024 -boot d -bios bios-256k.bin -boot menu=on \
   -tpmdev passthrough,id=tpm0,path=/dev/tpm0 \
   -device tpm-tis,tpmdev=tpm0 test.img
@@ -164,7 +164,7 @@ swtpm socket --tpmstate dir=/tmp/mytpm1 \
 Command line to start QEMU with the TPM emulator device communicating with
 the swtpm:
 
-qemu-system-x86_64 -display sdl -enable-kvm \
+qemu-system-x86_64 -display sdl -accel kvm \
   -m 1024 -boot d -bios bios-256k.bin -boot menu=on \
   -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \
   -tpmdev emulator,id=tpm0,chardev=chrtpm \
@@ -222,7 +222,7 @@ swtpm socket --tpmstate dir=/tmp/mytpm1 \
 
 In a 2nd terminal start the VM:
 
-qemu-system-x86_64 -display sdl -enable-kvm \
+qemu-system-x86_64 -display sdl -accel kvm \
   -m 1024 -boot d -bios bios-256k.bin -boot menu=on \
   -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \
   -tpmdev emulator,id=tpm0,chardev=chrtpm \
@@ -255,7 +255,7 @@ swtpm socket --tpmstate dir=/tmp/mytpm1 \
 In the 2nd terminal restore the state of the VM using the additonal
 '-incoming' option.
 
-qemu-system-x86_64 -display sdl -enable-kvm \
+qemu-system-x86_64 -display sdl -accel kvm \
   -m 1024 -boot d -bios bios-256k.bin -boot menu=on \
   -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \
   -tpmdev emulator,id=tpm0,chardev=chrtpm \

hw/block/dataplane/virtio-blk.c

@@ -190,8 +190,8 @@ int virtio_blk_data_plane_start(VirtIODevice *vdev)
     /* Set up guest notifier (irq) */
     r = k->set_guest_notifiers(qbus->parent, nvqs, true);
     if (r != 0) {
-        fprintf(stderr, "virtio-blk failed to set guest notifier (%d), "
-                "ensure -enable-kvm is set\n", r);
+        error_report("virtio-blk failed to set guest notifier (%d), "
+                     "ensure -accel kvm is set.", r);
         goto fail_guest_notifiers;
     }
 

hw/scsi/virtio-scsi-dataplane.c

@@ -142,8 +142,8 @@ int virtio_scsi_dataplane_start(VirtIODevice *vdev)
     /* Set up guest notifier (irq) */
     rc = k->set_guest_notifiers(qbus->parent, vs->conf.num_queues + 2, true);
     if (rc != 0) {
-        fprintf(stderr, "virtio-scsi: Failed to set guest notifiers (%d), "
-                "ensure -enable-kvm is set\n", rc);
+        error_report("virtio-scsi: Failed to set guest notifiers (%d), "
+                     "ensure -accel kvm is set.", rc);
         goto fail_guest_notifiers;
     }