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Nested Virtualization: interrupts (generic part)

PATCH In review Christoph Egger 1 participant 1 message Aug 5, 2010

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Christoph Egger

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PATCH 9/14 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: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

# HG changeset patch
# User cegger
# Date 1281003858 -7200
Handle interrupts (generic part)

xen/arch/x86/hvm/hvm.c +11 -0
diff -r 8c7c597735c6 -r 1a1837336ffd xen/arch/x86/hvm/hvm.c
@@ -2286,6 +2286,17 @@ enum hvm_intblk hvm_interrupt_blocked(st
 
     ASSERT(v == current);
 
+    if ( nestedhvm_enabled(v->domain) ) {
+        if ( !nestedsvm_gif_isset(v) )
+            return hvm_intblk_gif;
+
+        if ( 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;
+        }
+    }
+
     if ( (intack.source != hvm_intsrc_nmi) &&
          !(guest_cpu_user_regs()->eflags & X86_EFLAGS_IF) )
         return hvm_intblk_rflags_ie;
xen/arch/x86/x86_32/asm-offsets.c +3 -0
diff -r 8c7c597735c6 -r 1a1837336ffd xen/arch/x86/x86_32/asm-offsets.c
@@ -135,4 +135,7 @@ 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 8c7c597735c6 -r 1a1837336ffd xen/arch/x86/x86_64/asm-offsets.c
@@ -158,4 +158,7 @@ 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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