Changeset 1500 in vbox for trunk/src/VBox

Timestamp:

Mar 15, 2007 9:20:43 AM (18 years ago)

Author:

vboxsync

Message:

Added virtual interrupt redirection bitmap to our TSS

Location:

trunk/src/VBox/VMM

Files:

• SELM.cpp (modified) (1 diff)
• VMMAll/TRPMAll.cpp (modified) (1 diff)
• testcase/tstVMStructSize.cpp (modified) (1 diff)

trunk/src/VBox/VMM/SELM.cpp

@@ -299 +299 @@
     pDesc = &paGdt[pVM->selm.s.aHyperSel[SELM_HYPER_SEL_TSS] >> 3];
     RTGCPTR pGCTSS = VM_GUEST_ADDR(pVM, &pVM->selm.s.Tss);
+
+    /* The I/O bitmap starts right after the virtual interrupt redirection bitmap. Outside the TSS on purpose; the CPU will not check it
+     * for I/O operations. */
+    pVM->selm.s.Tss.offIoBitmap = RT_OFFSETOF(VBOXTSS, redirBitmap) + sizeof(pVM->selm.s.Tss.redirBitmap);
+    /* bit set to 1 means no redirection */
+    memset(pVM->selm.s.Tss.redirBitmap, 0xff, sizeof(pVM->selm.s.Tss.redirBitmap));
+
     pDesc->Gen.u16BaseLow       = RT_LOWORD(pGCTSS);
     pDesc->Gen.u8BaseHigh1      = RT_BYTE3(pGCTSS);

trunk/src/VBox/VMM/VMMAll/TRPMAll.cpp

@@ -633 +633 @@
                     }
 
-                    /* @note we use the eflags copy, that includes the virtualized bits! */
+                    /** @note we use the eflags copy, that includes the virtualized bits! */
+                    /** @note not really necessary as we grab include those bits in the trap/irq handler trampoline */
                     CTXSUFF(pTrapStack)[--idx] = eflags.u32;
 

trunk/src/VBox/VMM/testcase/tstVMStructSize.cpp

@@ -112 +112 @@
     CHECK_SIZE(VBOXPTE, 4);
     CHECK_SIZE(VBOXPDE, 4);
-    CHECK_SIZE(VBOXTSS, 104);
+    CHECK_SIZE(VBOXTSS, 136);
     CHECK_SIZE(X86FXSTATE, 512);
     CHECK_SIZE(RTUUID, 16);