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kern: add minimum alignment support to KMemoryManager

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This commit is contained in:
Michael Scire
2024-10-09 21:36:49 -07:00
parent 12f7c95c5d
commit d78e450db6
7 changed files with 58 additions and 16 deletions
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18
libraries/libmesosphere/source/svc/kern_svc_physical_memory.cpp
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@@ -48,10 +48,11 @@ namespace ams::kern::svc {
Result MapPhysicalMemory(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
const size_t min_alignment = Kernel::GetMemoryManager().GetMinimumAlignment(GetCurrentProcess().GetMemoryPool());
R_UNLESS(util::IsAligned(address, min_alignment), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, min_alignment), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
/* Verify that the process has system resource. */
auto &process = GetCurrentProcess();
@@ -69,10 +70,11 @@ namespace ams::kern::svc {
Result UnmapPhysicalMemory(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
const size_t min_alignment = Kernel::GetMemoryManager().GetMinimumAlignment(GetCurrentProcess().GetMemoryPool());
R_UNLESS(util::IsAligned(address, min_alignment), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, min_alignment), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
/* Verify that the process has system resource. */
auto &process = GetCurrentProcess();

6
libraries/libmesosphere/source/svc/kern_svc_process.cpp
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@@ -296,7 +296,9 @@ namespace ams::kern::svc {
Result StartProcess(ams::svc::Handle process_handle, int32_t priority, int32_t core_id, uint64_t main_thread_stack_size) {
/* Validate stack size. */
R_UNLESS(main_thread_stack_size == static_cast<size_t>(main_thread_stack_size), svc::ResultOutOfMemory());
const uint64_t aligned_stack_size = util::AlignUp(main_thread_stack_size, Kernel::GetMemoryManager().GetMinimumAlignment(GetCurrentProcess().GetMemoryPool()));
R_UNLESS(aligned_stack_size >= main_thread_stack_size, svc::ResultOutOfMemory());
R_UNLESS(aligned_stack_size == static_cast<size_t>(aligned_stack_size), svc::ResultOutOfMemory());
/* Get the target process. */
KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
@@ -314,7 +316,7 @@ namespace ams::kern::svc {
process->SetIdealCoreId(core_id);
/* Run the process. */
R_RETURN(process->Run(priority, static_cast<size_t>(main_thread_stack_size)));
R_RETURN(process->Run(priority, static_cast<size_t>(aligned_stack_size)));
}
Result TerminateProcess(ams::svc::Handle process_handle) {