Benjamin Lamowski 05522696c7 hw: x86_64: refactor Vm_session_component
On x86, the `Vm_session_component` obscured the differences between SVM
and VMX.

Separate the implementations, factor out common functionality and
address a number of long-standing issues in the process:

- Allocate nested page tables from Core_ram_allocator as a more suitable
  abstraction and account for the required memory, subtract the
  necessary amount of RAM from the session's `Ram_quota` *before*
  constructing the session object, to make sure that the memory
  allocated from the `Core_ram_allocator` is available from the VMM's
  RAM quota.
- Move the allocation of Vcpu_state and Vcpu_data into the Core::Vcpu
  class and use the Core RAM Allocator to allocate memory with a known
  physical address.
- Remove the fixed number of virtual CPUs and the associated reservation
  of memory by using a Registry for a flexible amount of vCPUs.

Issue #5221
2025-01-30 16:30:13 +01:00
..
2024-12-11 08:35:22 +01:00