* Instead of only implicitely update the last scheduled Cpu context with
the CPU state, when entering the architecture-speficic machine
exception vector, cache this data on kernel context stack, and deliver
it as argument when entering the kernel via high-level language
* Handle Cpu context's exception explicitely in kernel main routine
* Make cached CPU state available to error handling lambda in case of
Kernel::Mutex double entering (aka kernel fault)
* Rename Cpu::schedule to Cpu::assign
Ref genodelabs/genode#5425
* Rename Kernel::Lock into Kernel::Mutex
* Replace Guard object by template function that expects
lambda to handle re-entrance by same cpu
Ref genodelabs/genode#5425
- and store the vCPU startup state in a dedicated enum
- return the STARTUP exit from Vm::run()
- initialize the vCPU from Vm::proceed() instead of Vm::exception()
Fixgenodelabs/genode#5450
This patch changes the way of how the client-selected sub directory is
communicated to the server. The former opaque session argument is now
passed as last label element, which allows for the flexible tweaking
of this argument by init's session-routing and label-rewriting
mechansims. In particular, it alleviates the need for creating chroot
component instances.
This change requires the following four adaptations at the
configuration level:
- Each file-system session request must now carry a path starting
with / as last session arguments. Hence, <vfs> <fs> nodes that
feature a 'label' attributes must extend the attribute value
with " -> /". For <fs> nodes with no label attribute, "/" is
used as last label argument by default.
- For matching session-routing rules at init's configuration,
the matching of full labels should be replaced by 'label_prefix'
matches, excluding the last (path) argument.
- Wherever a label of a file-system session is rewritten by using
init's 'label' attribute of a <parent> or <child> target node,
the new attribute 'identity' should be used instead. This replaces
the identity part of the label while preserving the client's
directory argument.
- Analogously to the matching of session-routing rules, server-side
policy-selection rules that formerly matched a concrete 'label'
must be changed to match a 'label_prefix' instead.
As a good practice, 'label_prefix' values should end with " ->" if
possible, which clearly delimits the identity part of the label
used by the matching.
Issue #5445
This patch complements the existing 'label' attribute of session-route
target nodes with the new 'identity', 'resource', and 'prepend_resource'
attributes that allow for the partial rewriting of the label.
Fixes#5447
This patch allows for the assignment of RAM to a start node via a new
'ram' attribute as an alternative to traditional '<resource name="RAM">'
nodes. This makes configurations more concise.
It also adds support for defining a configuration-global default RAM
quota, following the existing pattern of the default caps definition,
e.g. the following <default> node alleviates the need to repeatedly
state reasonable 'ram' and 'caps' values in each single start node.
<default caps="100" ram="1M"/>
Fixes#5448
Support dynamic panorama of virtual displays. Virtual monitors for
VirtualBox must be configured in two steps.
- <Display monitorCount="<num>"> nodes in the .vbox file defines the
number of _connectors_ and, thus, the maximum number of connected
virtual monitors.
- Each enabled VirtualBox monitor requests a dedicated GUI session.
Enablement and labeling of these sessions is done via <monitor>
nodes in the component configuration like follows.
<monitor label="DP-1"/>
<monitor label="HDMI-A-1"/>
Labels can be used by the window manager to configure and place the
corresponding window. The order of the nodes directly controls the
connection order at the virtual graphics card.
Fixes#5449
When emitting TOUCH_RELEASE events, we have to make sure that the
release events refer to the corresponding ID of the preceding TOUCH
event(s).
Fixes#5446
When trying to apply dynamic config updates to the VFS, don't rely on
the assumption that one file-system instance exists for each XML node
because a malconfigured file-system route may result in a skipped
file-system construction. Print a diagnostic message instead.
Encountered while working on issue #5445
The commit will improve diagnostics, if a core thread dies
(which should never happen) with an hardware exception beside a page fault,
e.g. general protection fault or undefined opcode.
Without the commit we may not see this circumstance easily.
Issue #5443
In some situations, atexit handlers perform I/O (e.g., closing a file),
which entails the handling of signals. Should SIGTERM be pending, the
handling of this signal will in turn trigger the execution of atexit
handlers. To break this cycle, this patch removes atexit handlers from
the list before executing them. So no atexit handler is entered more
than once.
Fixes#5444
This patch adds the feature of moving and resizing windows by clicking
anywhere within a window while the global window-management key is held.
Depending on the position within the window, the click is interpreted as
click on the title (when clicking at inner 50% of the window, or as a
click on the border (when clicking at an area nearby the window
boundary).
This mode of interaction requires more flexibility of the handling of
key sequences. The formerly hard-wired handling of the drag and drop as
response to BTN_LEFT events does not suffice. Therefore, this patch
moves the driving of the drag-and-drop state to the config level by
introducing the actions "drag" and "drop"
Fixes#5403
This patch moves the formerly hard-wired drag-and-drop handling
to the configuration level by introducing the actions "drag" and "drop".
To aid the robust handling of release events matching their
corresponding press events, the patch refines the policy-matching of the
current combination of keys against the hierarchy of <press> and
<release> nodes. If no policy for a concrete combination exists, a
release event also considers the policy of its matching <press> node.
This way, the regular drag-and-drop rules can be expressed as
<press key="BTN_LEFT" action="drag">
<release key="BTN_LEFT" action="drop"/>
</press>
This also works when releasing BTN_LEFT while pressing additional keys,
for which no policy exists.
With this change, the layouter supports the matching of multiple key
sequences instead of only one, thereby supporting multiple actions at
once and allowing for decoupling different user interactions in the
configuration.
Issue #5403
