From 5b56d05e11f6887852a4051d394d2436a9c8f241 Mon Sep 17 00:00:00 2001
From: TuxSH <1922548+TuxSH@users.noreply.github.com>
Date: Sun, 23 Feb 2020 00:27:54 +0000
Subject: [PATCH] thermosphere: move EnterInterruptibleHypervisorCode into
 IrqManager

---
 ...ion_frame.hpp => hvisor_exception_stack_frame.hpp} |  0
 thermosphere/src/hvisor_irq_manager.cpp               |  2 +-
 thermosphere/src/hvisor_irq_manager.hpp               | 11 +++++++++--
 thermosphere/src/hvisor_virtual_gic.hpp               |  1 -
 4 files changed, 10 insertions(+), 4 deletions(-)
 rename thermosphere/src/{hvisor_exception_frame.hpp => hvisor_exception_stack_frame.hpp} (100%)

diff --git a/thermosphere/src/hvisor_exception_frame.hpp b/thermosphere/src/hvisor_exception_stack_frame.hpp
similarity index 100%
rename from thermosphere/src/hvisor_exception_frame.hpp
rename to thermosphere/src/hvisor_exception_stack_frame.hpp
diff --git a/thermosphere/src/hvisor_irq_manager.cpp b/thermosphere/src/hvisor_irq_manager.cpp
index 1d1a9002e..0641a1e41 100644
--- a/thermosphere/src/hvisor_irq_manager.cpp
+++ b/thermosphere/src/hvisor_irq_manager.cpp
@@ -233,7 +233,7 @@ namespace ams::hvisor {
 
         if (taskForBottomHalf != nullptr) {
             // Unmasking the irq signal is left at the discretion of the bottom half handler
-            exceptionEnterInterruptibleHypervisorCode();
+            EnterInterruptibleHypervisorCode();
             taskForBottomHalf->InterruptBottomHalfHandler(irqId, srcCore);
         }
     }
diff --git a/thermosphere/src/hvisor_irq_manager.hpp b/thermosphere/src/hvisor_irq_manager.hpp
index 717713fb9..5c5cbfe75 100644
--- a/thermosphere/src/hvisor_irq_manager.hpp
+++ b/thermosphere/src/hvisor_irq_manager.hpp
@@ -19,11 +19,11 @@
 #include "hvisor_gicv2.hpp"
 #include "hvisor_synchronization.hpp"
 #include "hvisor_i_interrupt_task.hpp"
+#include "hvisor_exception_stack_frame.hpp"
+#include "cpu/hvisor_cpu_sysreg_general.hpp"
 
 #include "memory_map.h"
 
-#include "exceptions.h" // TODO
-
 namespace ams::hvisor {
 
     class IrqManager final {
@@ -106,6 +106,13 @@ namespace ams::hvisor {
                 gicd->sgir = GicV2Distributor::ForwardToAllOthers << 24 | id;
             }
 
+            static void EnterInterruptibleHypervisorCode()
+            {
+                // We don't want the guest to spam us with its timer interrupts. Disable the timers.
+                THERMOSPHERE_SET_SYSREG(cntp_ctl_el0, 0);
+                THERMOSPHERE_SET_SYSREG(cntv_ctl_el0, 0);
+            }
+
             static void HandleInterrupt(ExceptionStackFrame *frame);
 
         public:
diff --git a/thermosphere/src/hvisor_virtual_gic.hpp b/thermosphere/src/hvisor_virtual_gic.hpp
index 1362a742e..c09f4a63f 100644
--- a/thermosphere/src/hvisor_virtual_gic.hpp
+++ b/thermosphere/src/hvisor_virtual_gic.hpp
@@ -17,7 +17,6 @@
 #pragma once
 
 #include "defines.hpp"
-#include "exceptions.h"
 #include "cpu/hvisor_cpu_exception_sysregs.hpp"
 #include "hvisor_irq_manager.hpp"
 #include "memory_map.h"