From: Ashish Kalra <Ashish.Kalra@amd.com>
To: <dave.hansen@linux.intel.com>, <luto@kernel.org>,
<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<x86@kernel.org>, <hpa@zytor.com>, <thomas.lendacky@amd.com>,
<linux-kernel@vger.kernel.org>, <peterz@infradead.org>
Subject: [PATCH] x86/mm: fix pg_level_to_pfn for 5-level paging mode.
Date: Fri, 13 Oct 2023 19:17:03 +0000 [thread overview]
Message-ID: <20231013191703.422085-1-Ashish.Kalra@amd.com> (raw)
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
next reply other threads:[~2023-10-13 19:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-13 19:17 Ashish Kalra [this message]
2023-10-14 8:47 ` Ingo Molnar
2023-10-16 18:32 ` Kalra, Ashish
2023-10-18 12:38 ` Ingo Molnar
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