On 04/02/21 18:16, Sean Christopherson wrote:
Export follow_pte() to fix build breakage when KVM is built as a module.
An in-flight KVM fix switches from follow_pfn() to follow_pte() in order
to grab the page protections along with the PFN.
Fixes: bd2fae8da794 ("KVM: do not assume PTE is writable after follow_pfn")
Cc: David Stevens <stevensd@xxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
Paolo, maybe you can squash this with the appropriate acks?
Indeed, you beat me by a minute. This change is why I hadn't sent out
the patch yet.
Andrew or Jason, ok to squash this?
Paolo
mm/memory.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/memory.c b/mm/memory.c
index feff48e1465a..15cbd10afd59 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4775,6 +4775,7 @@ int follow_pte(struct mm_struct *mm, unsigned long address,
out:
return -EINVAL;
}
+EXPORT_SYMBOL_GPL(follow_pte);
/**
* follow_pfn - look up PFN at a user virtual address
