microkernel: hot paths are pretty fucking hot

libraries/libmesosphere/source/kern_k_page_table_base.cpp

@@ -3054,6 +3054,9 @@ namespace ams::kern {
         return ResultSuccess();
     }
 
+    #pragma GCC push_options
+    #pragma GCC optimize ("-O2")
+
     Result KPageTableBase::SetupForIpcClient(PageLinkedList *page_list, size_t *out_blocks_needed, KProcessAddress address, size_t size, KMemoryPermission test_perm, KMemoryState dst_state) {
         /* Validate pre-conditions. */
         MESOSPHERE_ASSERT(this->IsLockedByCurrentThread());
@@ -3707,6 +3710,8 @@ namespace ams::kern {
         }
     }
 
+    #pragma GCC pop_options
+
     Result KPageTableBase::MapPhysicalMemory(KProcessAddress address, size_t size) {
         /* Lock the physical memory lock. */
         KScopedLightLock phys_lk(this->map_physical_memory_lock);

libraries/libmesosphere/source/kern_k_server_session.cpp

@@ -17,6 +17,9 @@
 
 namespace ams::kern {
 
+    #pragma GCC push_options
+    #pragma GCC optimize ("-O2")
+
     namespace ipc {
 
         using MessageBuffer = ams::svc::ipc::MessageBuffer;
@@ -1362,4 +1365,6 @@ namespace ams::kern {
         this->NotifyAvailable(svc::ResultSessionClosed());
     }
 
+    #pragma GCC pop_options
+
 }

libraries/libmesosphere/source/svc/kern_svc_ipc.cpp

@@ -17,6 +17,9 @@
 
 namespace ams::kern::svc {
 
+    #pragma GCC push_options
+    #pragma GCC optimize ("-O2")
+
     /* =============================    Common    ============================= */
 
     namespace {
@@ -304,4 +307,6 @@ namespace ams::kern::svc {
         return ReplyAndReceiveWithUserBuffer(out_index, message_buffer, message_buffer_size, handles, num_handles, reply_target, timeout_ns);
     }
 
+    #pragma GCC pop_options
+
 }