[RFC PATCH v2 40/69] KVM: Export kvm_is_reserved_pfn() for use by TDX

From: isaku . yamahata
Date: Fri Jul 02 2021 - 18:06:38 EST


From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>

TDX will use kvm_is_reserved_pfn() to prevent installing a reserved PFN
int SEPT. Or rather, to prevent such an attempt, as reserved PFNs are
not covered by TDMRs.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
---
virt/kvm/kvm_main.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8b075b5e7303..dd6492b526c9 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -188,6 +188,7 @@ bool kvm_is_reserved_pfn(kvm_pfn_t pfn)

return true;
}
+EXPORT_SYMBOL_GPL(kvm_is_reserved_pfn);

bool kvm_is_transparent_hugepage(kvm_pfn_t pfn)
{
--
2.25.1