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kern: Add special-case for InvalidateProcessDataCache on current process

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This commit is contained in:
Michael Scire
2023-10-11 09:37:45 -07:00
parent 46ccb6d71a
commit c8ff437971
4 changed files with 27 additions and 1 deletions
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17
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@@ -2508,6 +2508,23 @@ namespace ams::kern {
R_SUCCEED();
}
Result KPageTableBase::InvalidateCurrentProcessDataCache(KProcessAddress address, size_t size) {
/* Check pre-condition: this is being called on the current process. */
MESOSPHERE_ASSERT(this == std::addressof(GetCurrentProcess().GetPageTable().GetBasePageTable()));
/* Check that the region is in range. */
R_UNLESS(this->Contains(address, size), svc::ResultInvalidCurrentMemory());
/* Lock the table. */
KScopedLightLock lk(m_general_lock);
/* Check the memory state. */
R_TRY(this->CheckMemoryStateContiguous(address, size, KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted, KMemoryPermission_UserReadWrite, KMemoryPermission_UserReadWrite, KMemoryAttribute_Uncached, KMemoryAttribute_None));
/* Invalidate the data cache. */
R_RETURN(cpu::InvalidateDataCache(GetVoidPointer(address), size));
}
Result KPageTableBase::ReadDebugMemory(void *buffer, KProcessAddress address, size_t size) {
/* Lightly validate the region is in range. */
R_UNLESS(this->Contains(address, size), svc::ResultInvalidCurrentMemory());