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kern: update for new hw maintenance semantics

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This commit is contained in:
Michael Scire
2022-03-22 21:33:43 -07:00
committed by SciresM
parent 6e17317d5d
commit 9d89835ff8
19 changed files with 386 additions and 244 deletions
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22
libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp
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@@ -279,20 +279,21 @@ namespace ams::kern::arch::arm64::init {
/* Invalidate the entire tlb. */
cpu::DataSynchronizationBarrierInnerShareable();
cpu::InvalidateEntireTlbInnerShareable();
cpu::InvalidateEntireTlb();
/* Copy data, if we should. */
const u64 negative_block_size_for_mask = static_cast<u64>(-static_cast<s64>(block_size));
const u64 offset_mask = negative_block_size_for_mask & ((1ul << 48) - 1);
const KVirtualAddress copy_src_addr = KVirtualAddress(src_saved.GetRawAttributesUnsafeForSwap() & offset_mask);
const KVirtualAddress copy_dst_addr = KVirtualAddress(dst_saved.GetRawAttributesUnsafeForSwap() & offset_mask);
if (block_size && do_copy) {
if (do_copy) {
u8 tmp[0x100];
for (size_t ofs = 0; ofs < block_size; ofs += sizeof(tmp)) {
std::memcpy(tmp, GetVoidPointer(copy_src_addr + ofs), sizeof(tmp));
std::memcpy(GetVoidPointer(copy_src_addr + ofs), GetVoidPointer(copy_dst_addr + ofs), sizeof(tmp));
std::memcpy(GetVoidPointer(copy_dst_addr + ofs), tmp, sizeof(tmp));
}
cpu::DataSynchronizationBarrierInnerShareable();
}
/* Swap the mappings. */
@@ -339,7 +340,6 @@ namespace ams::kern::arch::arm64::init {
/* Can we make an L1 block? */
if (util::IsAligned(GetInteger(virt_addr), L1BlockSize) && util::IsAligned(GetInteger(phys_addr), L1BlockSize) && size >= L1BlockSize) {
*l1_entry = L1PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, attr, PageTableEntry::SoftwareReservedBit_None, false);
cpu::DataSynchronizationBarrierInnerShareable();
virt_addr += L1BlockSize;
phys_addr += L1BlockSize;
@@ -350,8 +350,8 @@ namespace ams::kern::arch::arm64::init {
/* If we don't already have an L2 table, we need to make a new one. */
if (!l1_entry->IsTable()) {
KPhysicalAddress new_table = AllocateNewPageTable(allocator);
*l1_entry = L1PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
cpu::DataSynchronizationBarrierInnerShareable();
*l1_entry = L1PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
}
L2PageTableEntry *l2_entry = GetL2Entry(l1_entry, virt_addr);
@@ -365,14 +365,12 @@ namespace ams::kern::arch::arm64::init {
phys_addr += L2BlockSize;
size -= L2BlockSize;
}
cpu::DataSynchronizationBarrierInnerShareable();
continue;
}
/* Can we make an L2 block? */
if (util::IsAligned(GetInteger(virt_addr), L2BlockSize) && util::IsAligned(GetInteger(phys_addr), L2BlockSize) && size >= L2BlockSize) {
*l2_entry = L2PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, attr, PageTableEntry::SoftwareReservedBit_None, false);
cpu::DataSynchronizationBarrierInnerShareable();
virt_addr += L2BlockSize;
phys_addr += L2BlockSize;
@@ -383,8 +381,8 @@ namespace ams::kern::arch::arm64::init {
/* If we don't already have an L3 table, we need to make a new one. */
if (!l2_entry->IsTable()) {
KPhysicalAddress new_table = AllocateNewPageTable(allocator);
*l2_entry = L2PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
cpu::DataSynchronizationBarrierInnerShareable();
*l2_entry = L2PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
}
L3PageTableEntry *l3_entry = GetL3Entry(l2_entry, virt_addr);
@@ -398,17 +396,18 @@ namespace ams::kern::arch::arm64::init {
phys_addr += L3BlockSize;
size -= L3BlockSize;
}
cpu::DataSynchronizationBarrierInnerShareable();
continue;
}
/* Make an L3 block. */
*l3_entry = L3PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, attr, PageTableEntry::SoftwareReservedBit_None, false);
cpu::DataSynchronizationBarrierInnerShareable();
virt_addr += L3BlockSize;
phys_addr += L3BlockSize;
size -= L3BlockSize;
}
/* Ensure data consistency after our mapping is added. */
cpu::DataSynchronizationBarrierInnerShareable();
}
KPhysicalAddress GetPhysicalAddress(KVirtualAddress virt_addr) const {
@@ -556,9 +555,6 @@ namespace ams::kern::arch::arm64::init {
}
void Reprotect(KVirtualAddress virt_addr, size_t size, const PageTableEntry &attr_before, const PageTableEntry &attr_after) {
/* Ensure data consistency before we begin reprotection. */
cpu::DataSynchronizationBarrierInnerShareable();
/* Ensure that addresses and sizes are page aligned. */
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, PageSize));
@@ -699,7 +695,7 @@ namespace ams::kern::arch::arm64::init {
this->PhysicallyRandomize(virt_addr, size, L2BlockSize, do_copy);
this->PhysicallyRandomize(virt_addr, size, L3ContiguousBlockSize, do_copy);
this->PhysicallyRandomize(virt_addr, size, L3BlockSize, do_copy);
cpu::StoreEntireCacheForInit();
cpu::StoreCacheForInit(GetVoidPointer(virt_addr), size);
}
};