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Kernel: Make kernel region allocators return KResultOr<NOP<Region>>
This expands the reach of error propagation greatly throughout the kernel. Sadly, it also exposes the fact that we're allocating (and doing other fallible things) in constructors all over the place. This patch doesn't attempt to address that of course. That's work for our future selves.
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cb71a73708
commit
75564b4a5f
40 changed files with 173 additions and 193 deletions
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@ -204,9 +204,10 @@ UNMAP_AFTER_INIT bool E1000ENetworkAdapter::initialize()
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enable_bus_mastering(pci_address());
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size_t mmio_base_size = PCI::get_BAR_space_size(pci_address(), 0);
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m_mmio_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of(PCI::get_BAR0(pci_address()))), Memory::page_round_up(mmio_base_size), "E1000e MMIO", Memory::Region::Access::ReadWrite, Memory::Region::Cacheable::No);
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if (!m_mmio_region)
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auto region_or_error = MM.allocate_kernel_region(PhysicalAddress(page_base_of(PCI::get_BAR0(pci_address()))), Memory::page_round_up(mmio_base_size), "E1000e MMIO", Memory::Region::Access::ReadWrite, Memory::Region::Cacheable::No);
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if (region_or_error.is_error())
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return false;
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m_mmio_region = region_or_error.release_value();
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m_mmio_base = m_mmio_region->vaddr();
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m_use_mmio = true;
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m_interrupt_line = PCI::get_interrupt_line(pci_address());
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