Previously, we were only using it for PTYs, because for PTYs there's
no alternative. But since we have to have it for PTYs anyway, if we
also use it for TTYs, we can eliminate all of the code that handled
SIGWINCH for TTYs.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Now that the SIGWINCH listener has fallbacks for older kernels, we
don't expect it to routinely fail, so if there's an error setting it
up, we want to know about it.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
This will allow the SIGWINCH listener to run on kernels older than
5.5, although on those kernels it will have to make 64 syscalls to
reset all the signal handlers.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
The PTY main file descriptor had to be introduced as a parameter to
start_sigwinch_listener, so that it could be closed in the child.
Really the SIGWINCH listener process should not have any file
descriptors open, except for the ones it needs to function, so let's
make it more robust by having it close all other file descriptors.
For recent kernels, we can do this very conveniently with
close_range(2), but for older kernels, we have to fall back to closing
open file descriptors one at a time.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Significant API changes have occured, most significantly is the switch
to an approach which does not require vm-memory and can run no_std.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Now cloud hypervisor will start signal thread to catch
SIGWINCH signal, cloud hypervisor then will resize the
guest console via vconsole.
This patch skip starting signal thread when there is no
need to resize guest console, such as console is not
configured.
Signed-off-by: Yong He <alexyonghe@tencent.com>
The PR #2333 added I/O rate limiter on block device, with some options
in `DiskConfig`. And the PR #2401 added rate limiter on virtio-net
device with same options, but it still throws `Error::ParseDisk`.
This commit fixes it with correct values.
Fixes: #2401
Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
Once error occur, vcpu thread may exit, this should
be critical event for the whole VM, we should fire
exit event and set vcpu state.
If we don't set vcpu state, the shutdown process
will hang at signal_thread, which is waiting the
vcpu state to change.
Signed-off-by: Yong He <alexyonghe@tencent.com>
We need to provide valid FDs while creating 'NetConfig' instances even
for unit tests. Closing invalid FDs would cause random unit test
failures.
Also, two identical 'NetConfig' instances are not allowed any more,
because it would lead to close the same FD twice. This is consistent
with the fact that a clone of a "NetConfig" instance is no
longer *equal* to the instance itself.
Fixes: #5203
Signed-off-by: Bo Chen <chen.bo@intel.com>
These are owned by the config (and are duplicated before being used to
create the `Tap` for the virtio-net device.)
By implementing Drop on NetConfig we have issues with moving out of
members that don't implement the Copy trait. This requires a small
adjustment to the unit tests that use the Default::default() function.
Fixes: #5197
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The custom version duplicates any FDs that have been provided so that
the validation logic used on hotplug, which takes a clone of the config,
can be safely carried out.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This code is indentical to what is in this repository. When a release
gets made we can then switch to that.
Fixes: #5122
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
If swtpm becomes unresponsive, guest gets blocked at "recvmsg" on tpm's
data FD. This change adds a timeout to the data fd socket. If swtpm
becomes unresponsive guest waits for "timeout" (secs) and continues to
run after returning an I/O error to tpm commands.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
We can ideally defer the address space allocation till we start the
vCPUs for the very first time. Because the VM will not access the memory
until the CPUs start running. Thus there is no need to allocate the
address space eagerly and wait till the time we are going to start the
vCPUs for the first time.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This hypervisor leaf includes details of the TSC frequency if that is
available from KVM. This can be used to efficiently calculate time
passed when there is an invariant TSC.
TEST=Run `cpuid` in the guest and observe the frequency populated.
Fixes: #5178
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Change "thead" to "thread".
Also make sure the two messages are distinguishable by adding "vmm" and
"vm" prefix.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
In order to comply with latest TDX version, we rely onto the branch
kvm-upstream-2022.08.07-v5.19-rc8 from https://github.com/intel/tdx
repository. Updates are based on changes that happened in
arch/x86/include/uapi/asm/kvm.h headers file.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A few breaking changes:
1. `-vvv` needs to be written as `-v -v -v`.
2. `--disk D1 D2` and others need to be written as `--disk D1 --disk D2`.
3. `--option=value` needs to be written as `--option value`
Change integration tests to adapt to the breaking changes.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Add new configuration for offloading features, including
Checksum/TSO/UFO, and set these offloading features as
enabled by default.
Fixes: #4792.
Signed-off-by: Yong He <alexyonghe@tencent.com>
MSHV does not require to ensure MMIO/PIO exits complete
before pausing. This patch makes sure the above requirement
by checking the hypervisor type run-time.
Fixes#5037
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This functionality has been obsoleted by our native support for
hugepages and shared memory.
See: #5082
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
To align the logging messages with the rest of the code, this
message should be aligned with another similar occurrence in
epoll_helper.rs
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
The double underscore made it different from how other projects would
name this particular macro.
No functional change.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
