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.

1 files changed, 2 insertions, 2 deletions

diff --git a/Kernel/Arch/PC/BIOS.cpp b/Kernel/Arch/PC/BIOS.cpp
index fb4d941d5e..40a96b7839 100644
--- a/Kernel/Arch/PC/BIOS.cpp
+++ b/Kernel/Arch/PC/BIOS.cpp
@@ -162,7 +162,7 @@ Memory::MappedROM map_bios()
     Memory::MappedROM mapping;
     mapping.size = 128 * KiB;
     mapping.paddr = PhysicalAddress(0xe0000);
-    mapping.region = MM.allocate_kernel_region(mapping.paddr, Memory::page_round_up(mapping.size), {}, Memory::Region::Access::Read);
+    mapping.region = MM.allocate_kernel_region(mapping.paddr, Memory::page_round_up(mapping.size), {}, Memory::Region::Access::Read).release_value();
     return mapping;
 }
 
@@ -176,7 +176,7 @@ Memory::MappedROM map_ebda()
     size_t ebda_size = (*ebda_length_ptr_b1 << 8) | *ebda_length_ptr_b0;
 
     Memory::MappedROM mapping;
-    mapping.region = MM.allocate_kernel_region(ebda_paddr.page_base(), Memory::page_round_up(ebda_size), {}, Memory::Region::Access::Read);
+    mapping.region = MM.allocate_kernel_region(ebda_paddr.page_base(), Memory::page_round_up(ebda_size), {}, Memory::Region::Access::Read).release_value();
     mapping.offset = ebda_paddr.offset_in_page();
     mapping.size = ebda_size;
     mapping.paddr = ebda_paddr;