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Nested Virtualization: interrupts (generic part)

PATCH In review Christoph Egger 1 participant 1 message Jun 3, 2010

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Christoph Egger

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PATCH 10/15 Nested Virtualization: interrupts (generic part)

Signed-off-by Christoph Egger <[email protected]>
Signature · 6 lines
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

# HG changeset patch
# User cegger
# Date 1275382033 -7200
Handle interrupts (generic part)

xen/arch/x86/hvm/hvm.c +9 -0
diff -r 11f96c916410 -r 5a68e35f53af xen/arch/x86/hvm/hvm.c
@@ -2284,10 +2284,19 @@ enum hvm_intblk hvm_interrupt_blocked(st
 
     ASSERT(v == current);
 
+    if ( nestedhvm_enabled(v->domain) && !nestedhvm_gif_isset(v) )
+        return hvm_intblk_gif;
+
     if ( (intack.source != hvm_intsrc_nmi) &&
          !(guest_cpu_user_regs()->eflags & X86_EFLAGS_IF) )
         return hvm_intblk_rflags_ie;
 
+    if ( nestedhvm_enabled(v->domain) && nestedhvm_vcpu_in_guestmode(v) ) {
+        if ( VCPU_NESTEDHVM(v).nh_hostflags.fields.vintrmask )
+            if ( !VCPU_NESTEDHVM(v).nh_hostflags.fields.rflagsif )
+                return hvm_intblk_rflags_ie;
+    }
+
     intr_shadow = hvm_funcs.get_interrupt_shadow(v);
 
     if ( intr_shadow & (HVM_INTR_SHADOW_STI|HVM_INTR_SHADOW_MOV_SS) )
xen/arch/x86/x86_32/asm-offsets.c +3 -0
diff -r 11f96c916410 -r 5a68e35f53af xen/arch/x86/x86_32/asm-offsets.c
@@ -132,4 +132,7 @@ void __dummy__(void)
 
     OFFSET(MB_flags, multiboot_info_t, flags);
     OFFSET(MB_cmdline, multiboot_info_t, cmdline);
+
+    OFFSET(NESTEDHVM_hostflags, struct vcpu, arch.hvm_vcpu.nestedhvm.nh_hostflags.bytes);
+    DEFINE(NESTEDHVM_forcevmexit, 0x4);
 }
xen/arch/x86/x86_64/asm-offsets.c +3 -0
diff -r 11f96c916410 -r 5a68e35f53af xen/arch/x86/x86_64/asm-offsets.c
@@ -156,4 +156,7 @@ void __dummy__(void)
 
     OFFSET(MB_flags, multiboot_info_t, flags);
     OFFSET(MB_cmdline, multiboot_info_t, cmdline);
+
+    OFFSET(NESTEDHVM_hostflags, struct vcpu, arch.hvm_vcpu.nestedhvm.nh_hostflags.bytes);
+    DEFINE(NESTEDHVM_forcevmexit, 0x4);
 }

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