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kvm: x86: offset is ensure to be in range 

In function apic_mmio_write(), the offset has been checked in:

   * apic_mmio_in_range()
   * offset & 0xf

These two ensures offset is in range [0x010, 0xff0].

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
alistair/sunxi64-5.4-dsi
Wei Yang 2019-03-31 19:17:23 -07:00 committed by Paolo Bonzini
parent ee171d2f39
commit 4cb8b11635
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/lapic.c
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@ -2023,7 +2023,7 @@ static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
apic_debug("%s: offset 0x%x with length 0x%x, and value is "
"0x%x\n", __func__, offset, len, val);
kvm_lapic_reg_write(apic, offset & 0xff0, val);
kvm_lapic_reg_write(apic, offset, val);
return 0;
}