If we couldn't find a page on read_emulated, it might be a good
idea to tell the guest about that and inject a #PF.
We do the same already for write faults. I don't know why it was
not implemented for reads.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
arch/x86/kvm/x86.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5fcde2c..5aa1219 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2131,10 +2131,13 @@ static int emulator_read_emulated(unsigned long addr,
goto mmio;
if (kvm_read_guest_virt(addr, val, bytes, vcpu)
- == X86EMUL_CONTINUE)
+ == X86EMUL_CONTINUE) {
return X86EMUL_CONTINUE;
- if (gpa == UNMAPPED_GVA)
+ }
+ if (gpa == UNMAPPED_GVA) {
+ kvm_inject_page_fault(vcpu, addr, 0);
return X86EMUL_PROPAGATE_FAULT;
+ }
mmio:
/*
--
1.6.0.2
--
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