Messages in this thread Patch in this message | | | From | Tom Lendacky <> | Subject | [PATCH] x86/mm: Remove unneeded TLB flush for in-place encryption | Date | Wed, 01 Nov 2017 11:54:26 -0500 |
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A TLB flush is not required when doing in-place encryption or decryption since the area's pagetable attributes are not being altered. To avoid confusion between what the routine is doing and what is documented in the AMD APM, delete the local_flush_tlb() call.
Suggested-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- arch/x86/mm/mem_encrypt.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 16c5f37..53680a9 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -63,7 +63,6 @@ static void __init __sme_early_enc_dec(resource_size_t paddr, if (!sme_me_mask) return; - local_flush_tlb(); wbinvd(); /*
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