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kern: implement new attr tracking for memory range/traversal context

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This commit is contained in:
Michael Scire 2024-03-28 02:30:24 -07:00
parent cfb12deb51
commit af7a200865
5 changed files with 26 additions and 7 deletions
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10
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@ -916,7 +916,7 @@ namespace ams::kern {
/* Begin traversal. */
TraversalContext context;
TraversalEntry cur_entry = { .phys_addr = Null<KPhysicalAddress>, .block_size = 0, .sw_reserved_bits = 0 };
TraversalEntry cur_entry = { .phys_addr = Null<KPhysicalAddress>, .block_size = 0, .sw_reserved_bits = 0, .attr = 0 };
bool cur_valid = false;
TraversalEntry next_entry;
bool next_valid;
@ -1687,11 +1687,12 @@ namespace ams::kern {
/* Begin a traversal. */
TraversalContext context;
TraversalEntry cur_entry = { .phys_addr = Null<KPhysicalAddress>, .block_size = 0, .sw_reserved_bits = 0 };
TraversalEntry cur_entry = { .phys_addr = Null<KPhysicalAddress>, .block_size = 0, .sw_reserved_bits = 0, .attr = 0 };
R_UNLESS(impl.BeginTraversal(std::addressof(cur_entry), std::addressof(context), address), svc::ResultInvalidCurrentMemory());
/* Traverse until we have enough size or we aren't contiguous any more. */
const KPhysicalAddress phys_address = cur_entry.phys_addr;
const u8 entry_attr = cur_entry.attr;
size_t contig_size;
for (contig_size = cur_entry.block_size - (GetInteger(phys_address) & (cur_entry.block_size - 1)); contig_size < size; contig_size += cur_entry.block_size) {
if (!impl.ContinueTraversal(std::addressof(cur_entry), std::addressof(context))) {
@ -1700,6 +1701,9 @@ namespace ams::kern {
if (cur_entry.phys_addr != phys_address + contig_size) {
break;
}
if (cur_entry.attr != entry_attr) {
break;
}
}
/* Take the minimum size for our region. */
@ -1713,7 +1717,7 @@ namespace ams::kern {
}
/* The memory is contiguous, so set the output range. */
out->Set(phys_address, size, is_heap);
out->Set(phys_address, size, is_heap, attr);
R_SUCCEED();
}