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kern: pass ini1 size from loader to kernel, remove slab memset from init0

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This commit is contained in:
Michael Scire 2023-10-11 02:02:49 -07:00 • committed by SciresM
parent add4b3fdc3
commit 4ca3c44e5f
6 changed files with 62 additions and 31 deletions
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27
libraries/libmesosphere/source/kern_initial_process.cpp
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@ -27,6 +27,7 @@ namespace ams::kern {
constinit KPhysicalAddress g_initial_process_binary_phys_addr = Null<KPhysicalAddress>;
constinit KVirtualAddress g_initial_process_binary_address = Null<KVirtualAddress>;
constinit size_t g_initial_process_binary_size = 0;
constinit InitialProcessBinaryHeader g_initial_process_binary_header = {};
constinit size_t g_initial_process_secure_memory_size = 0;
constinit u64 g_initial_process_id_min = std::numeric_limits<u64>::max();
@ -275,10 +276,11 @@ namespace ams::kern {
}
void SetInitialProcessBinaryPhysicalAddress(KPhysicalAddress phys_addr) {
void SetInitialProcessBinaryPhysicalAddress(KPhysicalAddress phys_addr, size_t size) {
MESOSPHERE_INIT_ABORT_UNLESS(g_initial_process_binary_phys_addr == Null<KPhysicalAddress>);
g_initial_process_binary_phys_addr = phys_addr;
g_initial_process_binary_size = size;
}
KPhysicalAddress GetInitialProcessBinaryPhysicalAddress() {
@ -287,6 +289,12 @@ namespace ams::kern {
return g_initial_process_binary_phys_addr;
}
size_t GetInitialProcessBinarySize() {
MESOSPHERE_INIT_ABORT_UNLESS(g_initial_process_binary_phys_addr != Null<KPhysicalAddress>);
return g_initial_process_binary_size;
}
u64 GetInitialProcessIdMin() {
return g_initial_process_id_min;
}
@ -305,14 +313,17 @@ namespace ams::kern {
LoadInitialProcessBinaryHeader();
if (g_initial_process_binary_header.num_processes > 0) {
/* Reserve pages for the initial process binary from the system resource limit. */
const size_t total_size = util::AlignUp(g_initial_process_binary_header.size, PageSize);
MESOSPHERE_ABORT_UNLESS(Kernel::GetSystemResourceLimit().Reserve(ams::svc::LimitableResource_PhysicalMemoryMax, total_size));
/* Ensure that we have a non-zero size. */
const size_t expected_size = g_initial_process_binary_size;
MESOSPHERE_INIT_ABORT_UNLESS(expected_size != 0);
/* The initial process binary is potentially over-allocated, so free any extra pages. */
if (total_size < InitialProcessBinarySizeMax) {
Kernel::GetMemoryManager().Close(KMemoryLayout::GetLinearPhysicalAddress(g_initial_process_binary_address + total_size), (InitialProcessBinarySizeMax - total_size) / PageSize);
}
/* Ensure that the size we need to reserve is as we expect it to be. */
const size_t total_size = util::AlignUp(g_initial_process_binary_header.size, PageSize);
MESOSPHERE_ABORT_UNLESS(total_size == expected_size);
MESOSPHERE_ABORT_UNLESS(total_size <= InitialProcessBinarySizeMax);
/* Reserve pages for the initial process binary from the system resource limit. */
MESOSPHERE_ABORT_UNLESS(Kernel::GetSystemResourceLimit().Reserve(ams::svc::LimitableResource_PhysicalMemoryMax, total_size));
return total_size;
} else {