* [Qemu-devel] [PATCH] Don't trap STGI within VMRUN
@ 2008-06-04 15:39 Alexander Graf
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From: Alexander Graf @ 2008-06-04 15:39 UTC (permalink / raw)
To: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 236 bytes --]
If VMRUN gets called with the STGI trap set active, it traps within the
VMRUN call itself, creating an endless loop.
This patch makes VMRUN set the GIF flag manually without calling
helper_stgi. Thus it eliminates the trap.
Alex
[-- Attachment #2: qemu-svn-stgi.patch --]
[-- Type: text/x-patch, Size: 459 bytes --]
Index: target-i386/op_helper.c
===================================================================
--- target-i386/op_helper.c (revision 4661)
+++ target-i386/op_helper.c (working copy)
@@ -4910,7 +4910,8 @@
break;
}
- helper_stgi();
+ /* STGI to enable interrupts again */
+ env->hflags |= HF_GIF_MASK;
/* maybe we need to inject an event */
event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
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2008-06-04 15:39 [Qemu-devel] [PATCH] Don't trap STGI within VMRUN Alexander Graf
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