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Nested Virtualization: interrupts (generic part)

PATCH In review Christoph Egger 1 participant 1 message Apr 15, 2010

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Christoph Egger

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PATCH 13/18 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
Karl-Hammerschmidt-Str. 34, 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 1271330308 -7200
Handle interrupts (generic part)

xen/arch/x86/hvm/hvm.c +10 -0
diff -r 9731aece91ac -r 5a9a704c880e xen/arch/x86/hvm/hvm.c
@@ -2233,10 +2233,20 @@ 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 )
+            return hvm_intblk_rflags_ie;
+        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 9731aece91ac -r 5a9a704c880e xen/arch/x86/x86_32/asm-offsets.c
@@ -127,4 +127,7 @@ void __dummy__(void)
     BLANK();
 
     OFFSET(CPUINFO_ext_features, struct cpuinfo_x86, x86_capability[1]);
+
+    OFFSET(NESTEDHVM_hostflags, struct vcpu, arch.hvm_vcpu.nestedhvm.nh_hostflags.bytes);
+    DEFINE(NESTEDHVM_forcevmexit, 0x4);
 }
xen/arch/x86/x86_64/asm-offsets.c +4 -0
diff -r 9731aece91ac -r 5a9a704c880e xen/arch/x86/x86_64/asm-offsets.c
@@ -151,4 +151,8 @@ void __dummy__(void)
     BLANK();
 
     OFFSET(CPUINFO_ext_features, struct cpuinfo_x86, x86_capability[1]);
+    BLANK();
+
+    OFFSET(NESTEDHVM_hostflags, struct vcpu, arch.hvm_vcpu.nestedhvm.nh_hostflags.bytes);
+    DEFINE(NESTEDHVM_forcevmexit, 0x4);
 }

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