From: Miaohe Lin <linmiaohe@xxxxxxxxxx> We can get is_mtrr_mask by calculating (msr - 0x200) % 2 directly. Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> --- arch/x86/kvm/mtrr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/mtrr.c b/arch/x86/kvm/mtrr.c index 7f0059aa30e1..a98701d9f2bf 100644 --- a/arch/x86/kvm/mtrr.c +++ b/arch/x86/kvm/mtrr.c @@ -348,7 +348,7 @@ static void set_var_mtrr_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data) int index, is_mtrr_mask; index = (msr - 0x200) / 2; - is_mtrr_mask = msr - 0x200 - 2 * index; + is_mtrr_mask = (msr - 0x200) % 2; cur = &mtrr_state->var_ranges[index]; /* remove the entry if it's in the list. */ @@ -424,7 +424,7 @@ int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) int is_mtrr_mask; index = (msr - 0x200) / 2; - is_mtrr_mask = msr - 0x200 - 2 * index; + is_mtrr_mask = (msr - 0x200) % 2; if (!is_mtrr_mask) *pdata = vcpu->arch.mtrr_state.var_ranges[index].base; else -- 2.19.1
