Changeset 95134 in vbox for trunk/src/VBox/VMM/VMMR0

Timestamp:

May 27, 2022 2:50:17 PM (3 years ago)

Author:

vboxsync

Message:

VMM,SUPDrv: Pass proper fCtxHook value to SUPR0FpuBegin/End so it can be used for assertions on linux. Wrote a more detailed explanation for the preemption hack in the linux SUPR0FpuBegin code and propped it up with an Assert(). bugref:10209

File:

• trunk/src/VBox/VMM/VMMR0/CPUMR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/CPUMR0.cpp

@@ -521 +521 @@
 
     /* Notify the support driver prior to loading the guest-FPU register state. */
-    SUPR0FpuBegin(false /* unused */);
+    SUPR0FpuBegin(VMMR0ThreadCtxHookIsEnabled(pVCpu));
+    /** @todo use return value? Currently skipping that to be on the safe side
+     *        wrt. extended state (linux). */
 
     if (!pVM->cpum.s.HostFeatures.fLeakyFxSR)
@@ -591 +593 @@
 
         /* Notify the support driver after loading the host-FPU register state. */
-        SUPR0FpuEnd(false /* unused */);
+        SUPR0FpuEnd(VMMR0ThreadCtxHookIsEnabled(pVCpu));
     }
     else