Commit-ID: f1f31404c2f7fa168445d9c5ccb6a7caa53e2b78 Gitweb: https://git.kernel.org/tip/f1f31404c2f7fa168445d9c5ccb6a7caa53e2b78 Author: Tom Lendacky <[email protected]> AuthorDate: Wed, 1 Nov 2017 11:54:26 -0500 Committer: Thomas Gleixner <[email protected]> CommitDate: Tue, 7 Nov 2017 13:13:45 +0100
x86/mm: Remove unneeded TLB flush for in-place encryption 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 <[email protected]> Signed-off-by: Tom Lendacky <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Borislav Petkov <[email protected]> Link: https://lkml.kernel.org/r/[email protected] --- 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(); /*
