Merge remote-tracking branches 'asoc/fix/db1200', 'asoc/fix/dwc', 'asoc/fix/imx-ssi...

[linux-beck.git] / arch / x86 / kvm / vmx.c

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d01986832afc28ed225b2f414ccb2742e528169c..06ef4908ba61d2e25ead615953a2f42c923a9219 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6064,6 +6064,8 @@ static __init int hardware_setup(void)
        memcpy(vmx_msr_bitmap_longmode_x2apic,
                        vmx_msr_bitmap_longmode, PAGE_SIZE);
 
+       set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
+
        if (enable_apicv) {
                for (msr = 0x800; msr <= 0x8ff; msr++)
                        vmx_disable_intercept_msr_read_x2apic(msr);
@@ -8615,17 +8617,22 @@ static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
        u64 ipat = 0;
 
        /* For VT-d and EPT combination
-        * 1. MMIO: guest may want to apply WC, trust it.
+        * 1. MMIO: always map as UC
         * 2. EPT with VT-d:
         *   a. VT-d without snooping control feature: can't guarantee the
-        *      result, try to trust guest.  So the same as item 1.
+        *      result, try to trust guest.
         *   b. VT-d with snooping control feature: snooping control feature of
         *      VT-d engine can guarantee the cache correctness. Just set it
         *      to WB to keep consistent with host. So the same as item 3.
         * 3. EPT without VT-d: always map as WB and set IPAT=1 to keep
         *    consistent with host MTRR
         */
-       if (!is_mmio && !kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
+       if (is_mmio) {
+               cache = MTRR_TYPE_UNCACHABLE;
+               goto exit;
+       }
+
+       if (!kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
                ipat = VMX_EPT_IPAT_BIT;
                cache = MTRR_TYPE_WRBACK;
                goto exit;