Initialize MTRR defType register the same way the KVM code does - WB caching by default.
Tested with latest mshv code.
Without this patch, these lines are present in guest serial log:
[ 0.000032] x86/PAT: MTRRs disabled, skipping PAT initialization too.
[ 0.000036] CPU MTRRs all blank - virtualized system.
This indicates the guest is detecting the set MTRR.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The Linux kernel expects that any PCI devices that advertise I/O bars
have use an address that is within the range advertised by the bus
itself. Unfortunately we were not advertising any I/O ports associated
with the PCI bus in the ACPI tables.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This patch addresses this issue https://github.com/rust-lang/rust-bindgen/pull/2064.
While we access field of packed struct the compiler can generate the
correct code to create a temporary variable to access the packed struct
field. Access withing {} ensures that.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The virtio_balloon test is a bit flaky since we can't really know how
much the balloon is gonna be deflated when the guest is under memory
pressure. That's why it's safer to simply check that the balloon is not
the initial size anymore.
One small detail, but we don't need to check for the balloon size to be
higher than 0 since the returned value is a u64.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since we ran into issues while using the Azure credentials plugin for
Jenkins, let's rely directly on the Azure CLI to download the Windows
guest image along with the modified OVMF firmware.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
To debug the FDT (Flattened Device Tree), we usually need to modify
source code to save the generted DTB data to disk, and use 'dtc' command
to decode the binary file into a text file to analyze.
It would be ideal if the FDT content can be seen in log.
This commit makes it real by:
- Introducing 'fdt' crate for parsing FDT.
- Printing the content of the FDT in tree view.
The parsing and printing only happen when Debug level logging enabled.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Additionally, he disk creation routine is extended to support NTFS and
variable image size.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
In order to allow a hotplugged vCPU to be assigned to the correct NUMA
node in the guest, the DSDT table must expose the _PXM method for each
vCPU. This method defines the proximity domain to which each vCPU should
be attached to.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The _PXM method always return 0, which is wrong since the SRAT might
tell differently. The point of the _PXM method is to be evaluated by the
guest OS when some new memory slot is being plugged, but this will never
happen for Cloud Hypervisor since using NUMA nodes along with memory
hotplug only works for virtio-mem.
Memory hotplug through ACPI will only happen when there's only one NUMA
node exposed to the guest, which means the _PXM method won't be needed
at all.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Make sure the unique PCI bus is tied to the default NUMA node 0, and
update the documentation to let the users know about this special case.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Fixed wrong MPIDR value setting for VCPUs in FDT.
The wrong setting made only 16 VCPUs can be enabled at most, all other
VCPUs were showing off-line.
The issue was introduced when we were migrating FDT-generating code to
vmm-fdt crate.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Now that vhost crate allows the caller to set the header flags, we can
set NEED_REPLY whenever the REPLY_ACK protocol feature is supported from
both ends.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The new test_virtio_balloon() is to verify if the 'deflate_on_oom'
parameter works. Its testing result is as follows:
1. Start a 4G guest with 2G balloon, check memory once starts up.
total_mem is 4294967296 bytes
actual_mem is 2147483648 bytes
orig_balloon is 2147483648 bytes
total used free shared buff/cache available
Mem: 3.8Gi 2.1Gi 1.6Gi 0.0Ki 140Mi 1.6Gi
Swap: 0B 0B 0B
2. Run a command in guest to eat up 25G memory, and check again.
total_mem is 4294967296 bytes
actual_mem is 3121610752 bytes
deflated_balloon is 1173356544 bytes
total used free shared buff/cache available
Mem: 3.8Gi 1.2Gi 2.6Gi 0.0Ki 49Mi 2.5Gi
Swap: 0B 0B 0B
From above, we can notice the balloon memory indeed deflates from
2147483648 bytes to 1173356544 bytes once an oom is going to be
triggered.
Signed-off-by: Fei Li <lifei.shirley@bytedance.com>
For vhost-user devices, memory should be shared between CLH and
vhost-user backend. However, madvise DONTNEED doesn't working in
this case. So, let's use fallocate PUNCH_HOLE to discard those
memory regions instead.
Signed-off-by: Li Hangjing <lihangjing@bytedance.com>
Sometimes we need balloon deflate automatically to give memory
back to guest, especially for some low priority guest processes
under memory pressure. Enable deflate_on_oom to support this.
Usage: --balloon "size=0,deflate_on_oom=on" \
Signed-off-by: Fei Li <lifei.shirley@bytedance.com>
Since using the VIRTIO configuration to expose the virtual IOMMU
topology has been deprecated, the virtio-iommu implementation must be
updated.
In order to follow the latest patchset that is about to be merged in the
upstream Linux kernel, it must rely on ACPI, and in particular the newly
introduced VIOT table to expose the information about the list of PCI
devices attached to the virtual IOMMU.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Since the reconnection thread took on the responsibility to handle
backend initiated requests as well, the variable naming should reflect
this by avoiding the "reconnect" prefix.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A new method has been introduced for WindowsGuest, that would poll on
the SSH connection and try to execute a test command. When successfull,
the polling stops and the guest is considered finished boot. The
downside of this method is that the network setup is needed always even
if the test doesn't use network, however it complies with the behavior
of other tests. I also observe a bit more stability on the local test
run, however it still appears to be a resource issue so some sporadic
fails are possible on a slower machine.
The hardcoded timeouts for guest boot and DHCP setup have been removed.
The dnsmasq invocation uses `--bind-dynamic` so then the daemon can be
started while the target interface could be down yet.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Co-authored-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Vhost user INFLIGHT_SHMFD protocol feature supports inflight I/O
tracking, this commit implement the vhost-user device (master) support
of the feature. Till this commit, specific vhost-user devices (blk, fs,
or net) have not enable this feature.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
