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Kernel: ACPI unmap_header does not do anything 

We have to work with MMU mapping/unmapping to be user friendly
This commit is contained in:
Bananymous 2023-03-28 02:56:44 +03:00
parent 0ef318633c
commit f9a0412e78
1 changed files with 6 additions and 7 deletions
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13
kernel/kernel/ACPI.cpp
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@ -144,20 +144,19 @@ namespace Kernel
{ {
const SDTHeader* header = get_header_from_index(i); const SDTHeader* header = get_header_from_index(i);
MMU::get().allocate_range((uintptr_t)header, header->length, MMU::Flags::Present); MMU::get().allocate_range((uintptr_t)header, header->length, MMU::Flags::Present);
if (!is_valid_std_header(header)) if (is_valid_std_header(header) && memcmp(header->signature, signature, 4) == 0)
{
unmap_header(header);
continue;
}
if (memcmp(header->signature, signature, 4) == 0)
return header; return header;
unmap_header(header);
} }
return BAN::Error::from_format("Could not find ACPI header '{}'", BAN::StringView(signature, 4)); return BAN::Error::from_format("Could not find ACPI header '{}'", BAN::StringView(signature, 4));
} }
void ACPI::unmap_header(const ACPI::SDTHeader* header) void ACPI::unmap_header(const ACPI::SDTHeader* header)
{ {
MMU::get().unallocate_range((uintptr_t)header, header->length); // I have to improve MMU page mapping so we can actually unmap
// without unmapping other mapped tables
(void)header;
//MMU::get().unallocate_range((uintptr_t)header, header->length);
} }
const ACPI::SDTHeader* ACPI::get_header_from_index(size_t index) const ACPI::SDTHeader* ACPI::get_header_from_index(size_t index)