Changeset 100761 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Aug 1, 2023 2:24:11 AM (20 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

158632

Message:

VMM/IEM: Check for IRQs every so often, especially after sti, popf and iret. Increased the hash table size. Disabled some debug code. bugref:10369

Location:

trunk/src/VBox/VMM/include

Files:

• IEMInternal.h (modified) (2 diffs)
• IEMMc.h (modified) (1 diff)

trunk/src/VBox/VMM/include/IEMInternal.h

@@ -1166 +1166 @@
     /** Whether to end the current TB. */
     bool                    fEndTb;
+    /** Number of instructions before we need emit an IRQ check call again.
+     * This helps making sure we don't execute too long w/o checking for
+     * interrupts and that we can forcedly perform IRQ checks one instruction
+     * after an STI and immediately following POPF, IRETF and similar. */
+    uint8_t                 cInstrTillIrqCheck;
     /** Spaced reserved for recompiler data / alignment. */
-    bool                    afRecompilerStuff1[4];
+    bool                    afRecompilerStuff1[3];
     /** Previous GCPhysInstrBuf value - only valid if fTbCrossedPage is set.   */
     RTGCPHYS                GCPhysInstrBufPrev;
@@ -4990 +4995 @@
 IEM_DECL_IEMTHREADEDFUNC_PROTO(iemThreadedFunc_BltIn_DeferToCImpl0);
 
+IEM_DECL_IEMTHREADEDFUNC_PROTO(iemThreadedFunc_BltIn_CheckIrq);
 IEM_DECL_IEMTHREADEDFUNC_PROTO(iemThreadedFunc_BltIn_CheckMode);
 IEM_DECL_IEMTHREADEDFUNC_PROTO(iemThreadedFunc_BltIn_CheckCsLim);

trunk/src/VBox/VMM/include/IEMMc.h

@@ -1261 +1261 @@
 /** May change the status bits (X86_EFL_STATUS_BITS) in RFLAGS . */
 #define IEM_CIMPL_F_STATUS_FLAGS        RT_BIT_32(7)
+/** May enable interrupts, so recheck IRQ immediately afterwards. */
+#define IEM_CIMPL_F_CHECK_IRQ           RT_BIT_32(8)
+/** May enable interrupts, but actual enabling may be delayed one instruction
+ *  to do interrupt inhibiting, so recheck IRQ after the next instruction. */
+#define IEM_CIMPL_F_CHECK_IRQ_DELAYED   RT_BIT_32(9)
 /** May trigger a VM exit. */
-#define IEM_CIMPL_F_VMEXIT              RT_BIT_32(8)
+#define IEM_CIMPL_F_VMEXIT              RT_BIT_32(10)
 /** May modify FPU state. */
-#define IEM_CIMPL_F_FPU                 RT_BIT_32(9)
+#define IEM_CIMPL_F_FPU                 RT_BIT_32(11)
 /** REP prefixed instruction which may yield before updating PC. */
-#define IEM_CIMPL_F_REP                 RT_BIT_32(10)
+#define IEM_CIMPL_F_REP                 RT_BIT_32(12)
 /** Force end of TB after the instruction.    */
-#define IEM_CIMPL_F_END_TB              RT_BIT_32(11)
+#define IEM_CIMPL_F_END_TB              RT_BIT_32(13)
 /** Convenience: Raise exception (technically unnecessary, since it shouldn't return VINF_SUCCESS). */
 #define IEM_CIMPL_F_XCPT \