This patch removes the only residual C++ exception from the kernel part
of core, eliminating the risk of the kernel thread trying to enter the
kernel itself via the C++ exception-handling path. When throwing an
exception, __cxa_allocate_exception invokes the cxx_heap, which
synchronizes accesses via a Genode::Mutex. In the contention case,
the blocking of the mutex issues a syscall to pause the caller.
The patch fixes the problem by replacing the exception with a return
value.
Fixes#5382
Issue #5245
over rsdp v1. The multiboot2 provided rsdp_v1 version may not contain the
xsdt pointer, but may have the very same acpi revision as the acpi rsdp v2
version of multiboot2.
Fixes#5332
This patch tightens the coupling of the 'Platform_thread' objects
with their corresponding 'Platform_pd' objects by specifying the
'Platform_pd' as constructor argument, keeping the relationship
as a reference (instead of a pointer), and constraining the
lifetime of 'Platform_pd' objects to the lifetime of the PD.
It thereby clears the way to simplify the thread creation since all
PD-related information (like quota budgets) are now known at the
construction time of the 'Platform_thread'.
The return value of 'Platform_thread::start' has been removed because it
is not evaluated by 'Cpu_thread_component'.
Related to #5256
For consistency reasons, remove the cortex_a8, cortex_a9, and cortex_a15
spec directories. Such SPEC variables do not exist since a while.
Also rename remaining translation_table.h header to page_table.h to
stay consistent with the class names inside.
Fixgenodelabs/genode#5253
- Remove exceptions
- Use 'Attr' struct for attach arguments
- Let 'attach' return 'Range' instead of 'Local_addr'
- Renamed 'Region_map::State' to 'Region_map::Fault'
Issue #5245Fixes#5070
The 'Thread_creation_failed' error is now reflected as
'Thread::Start_result' return value. This change also removes the
use of 'Invalid_thread' within core as this exception is an alias
of Cpu_session::Thread_creation_failed.
Issue #5245
This patch removes the exception formerly thrown by 'Cpu_thread::state'
and turns the 'Thread_state' structure into a plain compound type w/o a
constructor.
Issue #5245Fixes#5250
This patch replaces exceptions of the PD session RPC interface with
result types.
The change of the quota-transfer RPC functions required the adaptation
of base/quota_transfer.h and base/child.h.
The 'alloc_signal_source' method has been renamed to 'signal_source'
to avoid an exceedingly long name of the corresponding result type.
The Pd_session::map function takes a 'Virt_range' instead of basic-type
arguments.
The 'Signal_source_capability' alias for 'Capability<Signal_source>' has
been removed.
Issue #5245
This patch updates the signal API to avoid raw pointers, and
replaces the Context_already_in_use and Context_not_associated
exceptions by diagnostic messages.
Fixes#5247
The initial SVM implementation (correctly) just used another standard
x86_64 page table for nested paging. The EPT implementation is for Intel
VMX only. Since we don't know the underlying virtualization technology
at compile time, we need to pick the correct page table implementation
at runtime.
Add add a AMD-compatible HPT page table implementation using the same
base implementation and (more importantly) allocator as the EPT
implementation. Add a Vm_page_table implementation that determines the
used virtualization technology at runtime and internally defers insert
and remove operations to the correct page table implementation.
Issue #5218
On hw, `Page_flags` is used throughout architectures. At the same time,
it is used by the Intel IOMMU page table implementation in the pc
platform driver.
Consolidate the definition in base so it is available for all users.
Issue #5217
Create a generic interface for x86 virtualization.
Split the VMCB data structure in `Vmcb_buf` to represent the physical
VMCB page and `VMCB` as a control interface.
Issue #5113
So far, the VMCB data structure was generated from it's parts (most
prominently VMCB Control Area and VMCB State Save Area) with the VMCB Control
Area accessed via the Mmio framework, while the VMCB State Save Area
struct used directly defined members.
Unify the VMCB structure and uniformly use the Mmio framework to access
the VMCB. Separate the controlling structure from the VMCB page.
Issue #5113
The SVM implementation did not lend itself to a runtime selection of the
x86 virtualization technology.
Encapsulate functionality in the VMCB class to facilitate adding support
for Intel's VMX.
Issue #5113
The initial algorithm ported to hw seems to be correct in principle,
however it does not work with nested virtualization.
Clean up the code to make the different methods of obtaining the TSC
frequencies more clear, and add warnings if a particular
method has failed although it should be available.
Fixes#5210
When a new signal arrives, which means a formerly non-pending one,
we should ignore old signal numbers of that context, but only
evaluate newly received data by the last kernel-call.
Fix#5193
In the scheduler's implementation preserve the consumed slack-time
over periods of activation/deactivation, but instead of appending
activated jobs to the end of the slack queue, insert it as new head.
Thereby, the extreme discrimination of threads with short execution
times and frequent blocking behaviour against long running computations
gets avoided.
Fixgenodelabs/genode#4796
