This change reflects the logic in epte_get_entry_emt() and allows
changes in guest MTTRs to be reflected in EPT for domains having
direct access to certain hardware memory regions but without IOMMU
context assigned (e.g. XenGT).
Signed-off-by: Igor Druzhinin <igor.druzhi...@citrix.com>
---
xen/arch/x86/hvm/mtrr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/mtrr.c b/xen/arch/x86/hvm/mtrr.c
index b8fa340..7ccd85b 100644
--- a/xen/arch/x86/hvm/mtrr.c
+++ b/xen/arch/x86/hvm/mtrr.c
@@ -783,7 +783,7 @@ HVM_REGISTER_SAVE_RESTORE(MTRR, hvm_save_mtrr_msr,
hvm_load_mtrr_msr, 1,
void memory_type_changed(struct domain *d)
{
- if ( has_iommu_pt(d) && d->vcpu && d->vcpu[0] )
+ if ( (has_iommu_pt(d) || cache_flush_permitted(d)) && d->vcpu &&
d->vcpu[0] )
{
p2m_memory_type_changed(d);
flush_all(FLUSH_CACHE);
--
2.7.4
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