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Subject[PATCH] x86/mm: fix pg_level_to_pfn for 5-level paging mode.
Date
From: Ashish Kalra <ashish.kalra@amd.com>

Add support for 5-level paging in pg_level_to_pfn().

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
arch/x86/mm/mem_encrypt_amd.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index 6faea41e99b6..45914568596a 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -267,6 +267,10 @@ static unsigned long pg_level_to_pfn(int level, pte_t *kpte, pgprot_t *ret_prot)
pfn = pud_pfn(*(pud_t *)kpte);
prot = pud_pgprot(*(pud_t *)kpte);
break;
+ case PG_LEVEL_512G:
+ pfn = p4d_pfn(*(p4d_t *)kpte);
+ prot = p4d_pgprot(*(p4d_t *)kpte);
+ break;
default:
WARN_ONCE(1, "Invalid level for kpte\n");
return 0;
--
2.25.1
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