Changeset 95089 in vbox for trunk/src/VBox/HostDrivers/Support

Timestamp:

May 25, 2022 7:02:46 AM (3 years ago)

Author:

vboxsync

Message:

SUPDrv-linux: bugref:10209 Use kernel_fpu_begin/end for Linux kernels 5.18 and newer.

File:

• trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c

@@ -1733 +1733 @@
 {
     RT_NOREF(fCtxHook);
+#if RTLNX_VER_MIN(5,18,0)
+    kernel_fpu_begin();
+    /* if (fCtxHook) */
+        preempt_enable();  /* HACK ALERT! undo the implicit preempt_disable() in kernel_fpu_begin(). */
+    return true;
+#else
     return false;
+#endif
 }
 SUPR0_EXPORT_SYMBOL(SUPR0FpuBegin);
@@ -1741 +1748 @@
 {
     RT_NOREF(fCtxHook);
+#if RTLNX_VER_MIN(5,18,0)
+    /* if (fCtxHook) */
+        preempt_disable();  /* HACK ALERT! undo the implicit preempt_enable() in SUPR0FpuBegin(). */
+    kernel_fpu_end();
+#endif
 }
 SUPR0_EXPORT_SYMBOL(SUPR0FpuEnd);