The paired pte_unmap() call is missing before the sme_populate_pgd()
returns. Although this code only runs under the CONFIG_X86_64, for
the correctness of the code semantics, it is necessary to add a
paired pte_unmap() call.
Signed-off-by: Qi Zheng <[email protected]>
---
arch/x86/mm/mem_encrypt_identity.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/mm/mem_encrypt_identity.c b/arch/x86/mm/mem_encrypt_identity.c
index b43bc24d2bb6..6d323230320a 100644
--- a/arch/x86/mm/mem_encrypt_identity.c
+++ b/arch/x86/mm/mem_encrypt_identity.c
@@ -190,6 +190,7 @@ static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd)
pte = pte_offset_map(pmd, ppd->vaddr);
if (pte_none(*pte))
set_pte(pte, __pte(ppd->paddr | ppd->pte_flags));
+ pte_unmap(pte);
}
static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd)
--
2.20.1