On Wed, Nov 01, 2017 at 11:54:26AM -0500, Tom Lendacky wrote:
> 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.han...@intel.com>
> Signed-off-by: Tom Lendacky <thomas.lenda...@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();
>
> /*
Reviewed-by: Borislav Petkov <b...@suse.de>
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
