Changeset 57276 in vbox for trunk/src/VBox/Runtime/r0drv/linux/mp-r0drv-linux.c

Timestamp:

Aug 11, 2015 2:39:19 PM (9 years ago)

Author:

vboxsync

Message:

iprt/r0drv/linux: Preserve EFLAGS/AC where ever it may possibly be thought to change when calling kernel code.

File:

• trunk/src/VBox/Runtime/r0drv/linux/mp-r0drv-linux.c (modified) (10 diffs)

trunk/src/VBox/Runtime/r0drv/linux/mp-r0drv-linux.c

@@ -249 +249 @@
 RTDECL(int) RTMpOnAll(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
 {
+    IPRT_LINUX_SAVE_EFL_AC();
     int rc;
     RTMPARGS Args;
@@ -301 +302 @@
 
     RTThreadPreemptRestore(&PreemptState);
+    IPRT_LINUX_RESTORE_EFL_AC();
     return VINF_SUCCESS;
 }
@@ -308 +310 @@
 RTDECL(int) RTMpOnOthers(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
 {
+    IPRT_LINUX_SAVE_EFL_AC();
     int rc;
     RTMPARGS Args;
@@ -327 +330 @@
 
     Assert(rc == 0); NOREF(rc);
+    IPRT_LINUX_RESTORE_EFL_AC();
     return VINF_SUCCESS;
 }
@@ -356 +360 @@
 RTDECL(int) RTMpOnPair(RTCPUID idCpu1, RTCPUID idCpu2, uint32_t fFlags, PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
 {
+    IPRT_LINUX_SAVE_EFL_AC();
     int rc;
     RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
@@ -443 +448 @@
         rc = VERR_CPU_NOT_FOUND;
     RTThreadPreemptRestore(&PreemptState);;
+    IPRT_LINUX_RESTORE_EFL_AC();
     return rc;
 }
@@ -478 +484 @@
 RTDECL(int) RTMpOnSpecific(RTCPUID idCpu, PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
 {
+    IPRT_LINUX_SAVE_EFL_AC();
     int rc;
     RTMPARGS Args;
@@ -517 +524 @@
 
     NOREF(rc);
+    IPRT_LINUX_RESTORE_EFL_AC();
     return rc;
 }
@@ -539 +547 @@
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
     int rc;
+    IPRT_LINUX_SAVE_EFL_AC();
 
     if (!RTMpIsCpuPossible(idCpu))
@@ -554 +563 @@
     NOREF(rc);
     Assert(rc == 0);
+    IPRT_LINUX_RESTORE_EFL_AC();
     return VINF_SUCCESS;