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  1. 04 3月, 2016 1 次提交
    • P
      virt: Lift the maximum RAM limit from 30GB to 255GB · 71c27684
      由 Peter Maydell 提交于 
      The virt board restricts guests to only 30GB of RAM. This is a
hangover from the vexpress-a15 board, and there's no inherent reason
for it. 30GB is smaller than you might reasonably want to provision
a VM for on a beefy server machine. Raise the limit to 255GB.

We choose 255GB because the available space we currently have
below the 1TB boundary is up to the 512GB mark, but we don't
want to paint ourselves into a corner by assigning it all to
RAM. So we make half of it available for RAM, with the 256GB..512GB
range available for future non-RAM expansion purposes.

If we need to provide more RAM to VMs in the future then we need to:
 * allocate a second bank of RAM starting at 2TB and working up
 * fix the DT and ACPI table generation code in QEMU to correctly
   report two split lumps of RAM to the guest
 * fix KVM in the host kernel to allow guests with >40 bit address spaces

The last of these is obviously the trickiest, but it seems
reasonable to assume that anybody configuring a VM with a quarter
of a terabyte of RAM will be doing it on a host with more than a
terabyte of physical address space.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NChristoffer Dall <christoffer.dall@linaro.org>
Tested-by: NWei Huang <wei@redhat.com>
Message-id: 1456402182-11651-1-git-send-email-peter.maydell@linaro.org
      71c27684
  3. 11 2月, 2016 1 次提交
  5. 21 1月, 2016 3 次提交
  7. 19 1月, 2016 1 次提交
  9. 13 1月, 2016 1 次提交
  11. 12 1月, 2016 1 次提交
  13. 17 12月, 2015 3 次提交
  15. 10 11月, 2015 1 次提交
  17. 27 10月, 2015 1 次提交
    • A
      hw/arm/virt: don't use a15memmap directly · 4b280b72
      由 Andrew Jones 提交于 
      We should always go through VirtBoardInfo when we need the memmap.
To avoid using a15memmap directly, in this case, we need to defer
the max-cpus check from class init time to instance init time. In
class init we now use MAX_CPUMASK_BITS for max_cpus initialization,
which is the maximum QEMU supports, and also, incidentally, the
maximum KVM/gicv3 currently supports. Also, a nice side-effect of
delaying the max-cpus check is that we now get more appropriate
error messages for gicv2 machines that try to configure more than
123 cpus. Before this patch it would complain that the requested
number of cpus was greater than 123, but for gicv2 configs, it
should complain that the number is greater than 8.
Signed-off-by: NAndrew Jones <drjones@redhat.com>
Message-id: 1445189728-860-3-git-send-email-drjones@redhat.com
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      4b280b72
  19. 19 10月, 2015 2 次提交
  21. 16 10月, 2015 2 次提交
  23. 24 9月, 2015 1 次提交
  25. 19 9月, 2015 2 次提交
  27. 09 9月, 2015 2 次提交
  29. 07 9月, 2015 3 次提交
  31. 13 8月, 2015 4 次提交
  33. 26 6月, 2015 1 次提交
    • P
      hw/arm/virt: Make block devices default to virtio · 4e2c0b2a
      由 Peter Maydell 提交于 
      Now we have virtio-pci, we can make the virt board's default block
device type be IF_VIRTIO. This allows users to use simplified
command lines that don't have to explicitly create virtio-pci-blk
devices; the -hda &c very short options now also work.

This means we also need to set no_cdrom to avoid getting a
default cdrom device -- this is needed because the virtio-blk
device will fail if it is connected to a block backend with
no media, which is what the default cdrom device typically is.
Providing a cdrom with media via -cdrom will succeed, but silently
create a device with non-removable medium. this is probably
not really what the user wants, but is the best we can do now.

Note that this change means that some command lines which used
to work (by accident) will stop working. Where a drive was connected
manually to a device but without 'if=none' being specified, we
used to treat this as an IDE drive, which we would then not autoplug
because the board doesn't support IDE. Now we will treat it as a
virtio disk and autoplug it, which means the attempt to use the
drive manually will fail:
  qemu-system-arm: -drive file=img.qcow2,id=foo: Drive 'foo' is already
  in use because it has been automatically connected to another device
  (did you need 'if=none' in the drive options?)
The command line will have to be changed to include 'if=none', as the
error message suggests.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435068107-12594-4-git-send-email-peter.maydell@linaro.org
      4e2c0b2a
  35. 19 6月, 2015 1 次提交
  37. 16 6月, 2015 2 次提交
  39. 05 6月, 2015 1 次提交
  41. 02 6月, 2015 5 次提交
  43. 29 5月, 2015 1 次提交