diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7aef002be551..c28e2a20dec2 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5185,11 +5185,14 @@ static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes if (gpa == UNMAPPED_GVA) return X86EMUL_PROPAGATE_FAULT; + if (!kvm_page_track_prewrite(vcpu, gpa, addr, data, towrite)) + return X86EMUL_RETRY_INSTR; ret = kvm_vcpu_write_guest(vcpu, gpa, data, towrite); if (ret < 0) { r = X86EMUL_IO_NEEDED; goto out; } + kvm_page_track_write(vcpu, gpa, addr, data, towrite); bytes -= towrite; data += towrite;
This is needed for the introspection subsystem to track the changes to descriptor table registers. CC: Joerg Roedel <joro@8bytes.org> Signed-off-by: Adalbert Lazăr <alazar@bitdefender.com> --- arch/x86/kvm/x86.c | 3 +++ 1 file changed, 3 insertions(+)