By splitting the 'init_capability_slab()' implementation to a separate
compilation unit 'capability_slab.cc', base-hw no longer needs a
customized version of 'lib/base/platform.cc'.
Related to issue #4784
This patch replaces the internal use 'env_deprecated()' from the
implementation of the thread API in the base library. It also
replaces the global accessor 'main_thread_cap' by the explicit
propagation of the main-thread's capability to the single point of
use via a new 'init_thread_bootstap' function.
Issue #4784
The change "core: allow offset-attached managed dataspaces" addressed a
corner case of the use of nested region maps. Apparently, this change
negatively affects other scenarios (tool_chain_auto).
In order to confidently cover all the differnt situations, this patch
reworks the page-fault resolution code for improved clarity and safety,
by introducing dedicated result types, reducing the use of basic types,
choosing expressive names, and fostering constness.
It also introduces a number of 'print' hooks that greatly ease manual
instrumentation and streamlines the error messages printed by core.
Those messages no longer appear when a user-level page-fault handler
is reistered for the faulted-at region map. So the monitor component
produces less noise on the attempt to dump non-existing memory.
Issue #4917Fixes#4920
The new 'init_platform' function performs the platform-specific
component-local low-level initialization. It allows for the
differentiation between core and regular components as well as
kernel-dependent peculiarities.
This patch introduces a consistent notion of a 'Platform'. Within core,
the 'Platform' contains the kernel-specific initialization. Outside
core, the platform sets up the interplay with the parent component. In
all cases, the platform is constructed while running on the initial
stack.
Issue #4784
The namespace draws a clear line between the base library and the core
component.
It is declared at the new core-local header <types.h>, which is expected
to be included by all code of the core component. It is thereby a
natural place for kernel-agnostic general types like commonly used C++
utilities.
Fixes#4777
Set wakeup pointer in FADT/FACS tables and prepare/place ACPI resume code
at application processors (AP) 16-bit entry. Exclude memory used for AP resume
from RAM range to avoid usage by Genode core in allocators.
Issue #4669
The CPUs are woken all at once and up to now the IDs are assigned depending
on the arrival order, which is unfortunate for the resume case. Keep track
of once assigned IDs for CPUs, so that on resume the very same CPU id is given.
The APIC id is guaranteed to be fixed per CPU on suspend, but unfortunately
not dense packed.
Issue #4669
The ACPI table FACS and FADT are required to support ACPI suspend/resume. The
commits add the lookup of the ACPI table in bootstrap and the general usage
of the ACPI registers via the MMIO framework.
Issue #4669
Add explicit init() to Timer infrastructure to re-initialize the hardware
based on the parameters given during constructing time of the timer object.
Issue #4669
On resume the CPU state must be re-initialized, since all CPUs have been
potentially off (depending on sleep form) and lost state. Handle the halt
and suspend state explicitly by an extra Job implementation which can be
executed without holding the global kernel lock.
Issue #4669
Instead of re-using the register values found in HCR_EL2 and CPTR_EL2
and setting single bits within them, define the complete content to
prevent inconsistent hardware/hypervisor state.
Ref genodelabs/genode#4759
Tests on qemu would fail when started with RAM sizes from 1025MiB to
2048MiB, because the the mapping hole in the page table from 1GiB to
2GiB would interfere with qemu's mapping addresses for ACPI.
Identity-map the complete first 4GiB of memory to catch all early
memory accesses during bootstrap.
Fixes#4724.
Adds befriended test-local wrappers for the classes Cpu_share and Cpu_scheduler
and adds a print method to the scheduler wrapper that prints the internal state
of the scheduler to the given output. Cpu_shares are referenced in the output
via a the IDs that the test uses to organize them. I.e., this corresponds to
how the CPU shares are named when calling the atomic steps the test is made of.
Ref #4151
Ref #4710
This adapts the test to the changes that were applied to the scheduling scheme
by the following commits:
* base-hw scheduler: optimize quota depletion events
* base-hw scheduler: fix bug on removing head
* base-hw scheduler: fix ready method
* base-hw: optimize & cleanup scheduler
Part of that is that the test used to check whether the act of setting a share
ready outdates the head or not. However, with the current version of the
scheduler, this check is not possible anymore. We can merely check whether the
head is outdated after setting the share ready. So, among other adaptions, this
commit adapts the expectations of the test to the new semantics of the check.
Ref #4151
Ref #4710
* Get rid of preprocessor macros.
* Introduce Main as class.
* Exit with -1 instead of endless loops on errors.
* Don't try to deal with error conditions, just print a message and exit
with -1.
* Only one operation per line.
Ref #4151
Ref #4710
This is an optimization for the case that a prioritized scheduling context
needs slightly more time during a round than granted via quota. If this is the
case, we move the scheduling context to the front of the unprioritized schedule
once its quota gets depleted and thereby at least ensure that it does not have
to wait for all unprioritized scheduling contexts as well before being
scheduled again.
Note that this introduces the possibility of undeserved starvation of
unprioritized scheduling contexts to the scheduling scheme. If there are
enough prioritized contexts that deplete their quota during a round,
they may cover up also the rest of the round with their unprioritized time
slices. If this happens every round, contexts without a priority/quota may
never get a turn. In the previous scheduling scheme, this could not occur as
the unprioritized schedule was completely independent from prioritized
schedules and rounds.
Ref #4151
Ref #4710
The scheduler did not consider the consumed quota during a call to "update"
if the head that consumed the quota was removed from the scheduler. When this
occured, the internal round time did not advance as expected but remained at
its previous value untile the next call to "update" (without a removed head)
This commit introduces a new flag that is set only when the head gets removed
in order to detect and handle the situation correctly on the next call to
"update".
Ref #4151
Ref #4710
