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kern: improve resource region size definitions/calculations

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Michael Scire authored and SciresM committed 2020-08-18 15:17:40 -07:00
1 parent 79201428b0
commit 1a262c1063
7 files changed
+52 -47
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libraries/libmesosphere/include/mesosphere/kern_k_memory_layout.hpp
+14
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@@ -39,6 +39,19 @@ namespace ams::kern {
constexpr size_t KernelPhysicalAddressSpaceLast = KernelPhysicalAddressSpaceEnd - 1ul;
constexpr size_t KernelPhysicalAddressSpaceSize = KernelPhysicalAddressSpaceEnd - KernelPhysicalAddressSpaceBase;
constexpr size_t KernelPageTableHeapSize = init::KInitialPageTable::GetMaximumOverheadSize(8_GB);
constexpr size_t KernelInitialPageHeapSize = 128_KB;
constexpr size_t KernelSlabHeapDataSize = 5_MB;
constexpr size_t KernelSlabHeapGapsSize = 2_MB - 64_KB;
constexpr size_t KernelSlabHeapGapsSizeDeprecated = 2_MB;
constexpr size_t KernelSlabHeapSize = KernelSlabHeapDataSize + KernelSlabHeapGapsSize;
/* NOTE: This is calculated from KThread slab counts, assuming KThread size <= 0x860. */
constexpr size_t KernelSlabHeapAdditionalSize = 0x68000;
constexpr size_t KernelResourceSize = KernelPageTableHeapSize + KernelInitialPageHeapSize + KernelSlabHeapSize;
enum KMemoryRegionType : u32 {
KMemoryRegionAttr_CarveoutProtected = 0x04000000,
KMemoryRegionAttr_DidKernelMap = 0x08000000,
@@ -544,6 +557,7 @@ namespace ams::kern {
}
static void InitializeLinearMemoryRegionTrees(KPhysicalAddress aligned_linear_phys_start, KVirtualAddress linear_virtual_start);
static size_t GetResourceRegionSizeForInit();
static NOINLINE auto GetKernelRegionExtents() { return GetVirtualMemoryRegionTree().GetDerivedRegionExtents(KMemoryRegionType_Kernel); }
static NOINLINE auto GetKernelCodeRegionExtents() { return GetVirtualMemoryRegionTree().GetDerivedRegionExtents(KMemoryRegionType_KernelCode); }