From: Wei Yang Date: Mon, 1 Apr 2019 02:17:23 +0000 (-0700) Subject: kvm: x86: offset is ensure to be in range X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4cb8b1163586addc9e1f4eebe232a11534c24d4a;p=linux.git 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 Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 9a54fccd0aa25..e82a18ccfc1a2 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -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; }