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Code Issues Releases Activity

kern: track heap in KPageTableBase::MemoryRange

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This commit is contained in:
Michael Scire 2023-04-30 16:50:53 -07:00
parent a7300b0fa4
commit ed9e60acb9
4 changed files with 50 additions and 28 deletions
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23
libraries/libmesosphere/include/mesosphere/kern_k_page_table_base.hpp
View file

@ -57,11 +57,26 @@ namespace ams::kern {
using TraversalEntry = KPageTableImpl::TraversalEntry;
using TraversalContext = KPageTableImpl::TraversalContext;
struct MemoryRange {
KPhysicalAddress address;
size_t size;
class MemoryRange {
private:
KPhysicalAddress m_address;
size_t m_size;
bool m_heap;
public:
constexpr MemoryRange() : m_address(Null<KPhysicalAddress>), m_size(0), m_heap(false) { /* ... */ }
void Close();
void Set(KPhysicalAddress address, size_t size, bool heap) {
m_address = address;
m_size = size;
m_heap = heap;
}
constexpr KPhysicalAddress GetAddress() const { return m_address; }
constexpr size_t GetSize() const { return m_size; }
constexpr bool IsHeap() const { return m_heap; }
void Open();
void Close();
};
protected:
enum MemoryFillValue {

20
libraries/libmesosphere/source/board/nintendo/nx/kern_k_device_page_table.cpp
View file

@ -1133,17 +1133,17 @@ namespace ams::kern::board::nintendo::nx {
size_t cur_size;
{
/* Get the current contiguous range. */
KPageTableBase::MemoryRange contig_range = { .address = Null<KPhysicalAddress>, .size = 0 };
KPageTableBase::MemoryRange contig_range;
R_TRY(page_table->OpenMemoryRangeForMapDeviceAddressSpace(std::addressof(contig_range), process_address + mapped_size, size - mapped_size, ConvertToKMemoryPermission(device_perm), is_aligned));
/* Ensure we close the range when we're done. */
ON_SCOPE_EXIT { contig_range.Close(); };
/* Get the current size. */
cur_size = contig_range.size;
cur_size = contig_range.GetSize();
/* Map the device page. */
R_TRY(this->MapDevicePage(contig_range.address, contig_range.size, cur_addr, device_perm));
R_TRY(this->MapDevicePage(contig_range.GetAddress(), cur_size, cur_addr, device_perm));
}
/* Advance. */
@ -1288,7 +1288,7 @@ namespace ams::kern::board::nintendo::nx {
MESOSPHERE_ASSERT(((device_address + size - 1) & ~DeviceVirtualAddressMask) == 0);
/* We need to traverse the ranges that make up our mapping, to make sure they're all good. Start by getting a contiguous range. */
KPageTableBase::MemoryRange contig_range = { .address = Null<KPhysicalAddress>, .size = 0 };
KPageTableBase::MemoryRange contig_range;
if (R_FAILED(page_table->OpenMemoryRangeForUnmapDeviceAddressSpace(std::addressof(contig_range), process_address, size))) {
return false;
}
@ -1300,8 +1300,8 @@ namespace ams::kern::board::nintendo::nx {
/* Walk the directory. */
KProcessAddress cur_process_address = process_address;
size_t remaining_size = size;
KPhysicalAddress cur_phys_address = contig_range.address;
size_t remaining_in_range = contig_range.size;
KPhysicalAddress cur_phys_address = contig_range.GetAddress();
size_t remaining_in_range = contig_range.GetSize();
bool first = true;
u32 first_attr = 0;
while (remaining_size > 0) {
@ -1347,8 +1347,8 @@ namespace ams::kern::board::nintendo::nx {
}
range_open = true;
cur_phys_address = contig_range.address;
remaining_in_range = contig_range.size;
cur_phys_address = contig_range.GetAddress();
remaining_in_range = contig_range.GetSize();
}
/* Check that the physical address is expected. */
@ -1390,8 +1390,8 @@ namespace ams::kern::board::nintendo::nx {
}
range_open = true;
cur_phys_address = contig_range.address;
remaining_in_range = contig_range.size;
cur_phys_address = contig_range.GetAddress();
remaining_in_range = contig_range.GetSize();
}
/* Check that the physical address is expected, and there's enough in the range. */

27
libraries/libmesosphere/source/kern_k_page_table_base.cpp
View file

@ -74,8 +74,18 @@ namespace ams::kern {
}
void KPageTableBase::MemoryRange::Open() {
/* If the range contains heap pages, open them. */
if (this->IsHeap()) {
Kernel::GetMemoryManager().Open(this->GetAddress(), this->GetSize() / PageSize);
}
}
void KPageTableBase::MemoryRange::Close() {
Kernel::GetMemoryManager().Close(address, size / PageSize);
/* If the range contains heap pages, close them. */
if (this->IsHeap()) {
Kernel::GetMemoryManager().Close(this->GetAddress(), this->GetSize() / PageSize);
}
}
Result KPageTableBase::InitializeForKernel(bool is_64_bit, void *table, KVirtualAddress start, KVirtualAddress end) {
@ -1504,16 +1514,13 @@ namespace ams::kern {
/* Check that the memory is contiguous (modulo the reference count bit). */
const u32 test_state_mask = state_mask | KMemoryState_FlagReferenceCounted;
if (R_FAILED(this->CheckMemoryStateContiguous(address, size, test_state_mask, state | KMemoryState_FlagReferenceCounted, perm_mask, perm, attr_mask, attr))) {
const bool is_heap = R_SUCCEEDED(this->CheckMemoryStateContiguous(address, size, test_state_mask, state | KMemoryState_FlagReferenceCounted, perm_mask, perm, attr_mask, attr));
if (!is_heap) {
R_TRY(this->CheckMemoryStateContiguous(address, size, test_state_mask, state, perm_mask, perm, attr_mask, attr));
}
/* The memory is contiguous, so set the output range. */
*out = {
.address = phys_address,
.size = size,
};
out->Set(phys_address, size, is_heap);
R_SUCCEED();
}
@ -2932,7 +2939,7 @@ namespace ams::kern {
KMemoryAttribute_IpcLocked | KMemoryAttribute_Locked, KMemoryAttribute_None));
/* We got the range, so open it. */
Kernel::GetMemoryManager().Open(out->address, out->size / PageSize);
out->Open();
R_SUCCEED();
}
@ -2949,7 +2956,7 @@ namespace ams::kern {
KMemoryAttribute_DeviceShared | KMemoryAttribute_Locked, KMemoryAttribute_DeviceShared));
/* We got the range, so open it. */
Kernel::GetMemoryManager().Open(out->address, out->size / PageSize);
out->Open();
R_SUCCEED();
}
@ -3020,7 +3027,7 @@ namespace ams::kern {
KMemoryAttribute_Uncached, KMemoryAttribute_None));
/* We got the range, so open it. */
Kernel::GetMemoryManager().Open(out->address, out->size / PageSize);
out->Open();
R_SUCCEED();
}

8
libraries/libmesosphere/source/svc/kern_svc_cache.cpp
View file

@ -36,15 +36,15 @@ namespace ams::kern::svc {
size_t remaining = size;
while (remaining > 0) {
/* Get a contiguous range to operate on. */
KPageTableBase::MemoryRange contig_range = { .address = Null<KPhysicalAddress>, .size = 0 };
KPageTableBase::MemoryRange contig_range;
R_TRY(page_table.OpenMemoryRangeForProcessCacheOperation(std::addressof(contig_range), cur_address, aligned_end - cur_address));
/* Close the range when we're done operating on it. */
ON_SCOPE_EXIT { contig_range.Close(); };
/* Adjust to remain within range. */
KVirtualAddress operate_address = KMemoryLayout::GetLinearVirtualAddress(contig_range.address);
size_t operate_size = contig_range.size;
KVirtualAddress operate_address = KMemoryLayout::GetLinearVirtualAddress(contig_range.GetAddress());
size_t operate_size = contig_range.GetSize();
if (cur_address < address) {
operate_address += (address - cur_address);
operate_size -= (address - cur_address);
@ -57,7 +57,7 @@ namespace ams::kern::svc {
operation.Operate(GetVoidPointer(operate_address), operate_size);
/* Advance. */
cur_address += contig_range.size;
cur_address += contig_range.GetSize();
remaining -= operate_size;
}
MESOSPHERE_ASSERT(remaining == 0);