Attachment 14087 Details for Bug 13302 – git-am fix for 4.7.next, 4.8.next.

[patch] git-am fix for 4.7.next, 4.8.next.

0001-Allow-AESNI-to-be-used-on-all-processor-supporting-A.patch (text/plain), 1.79 KB, created by Jeremy Allison on 2018-03-27 18:33:14 UTC

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Creator: Jeremy Allison

Created: 2018-03-27 18:33:14 UTC

Size: 1.79 KB

patch

obsolete

>From 76764801b8de94a2b4f61d7f8b52ca3a80396b13 Mon Sep 17 00:00:00 2001
>From: Eric Vannier <evannier@google.com>
>Date: Thu, 22 Mar 2018 21:32:56 -0700
>Subject: [PATCH] Allow AESNI to be used on all processor supporting AESNI, not
> just Intel's This improves performance/reduced CPU usage. Tests performed: -
> Ran on Ivy Bridge and Ryzen and verified that AESNI is detected (crypto
> tests) - Ran on Ryzen, and observed 50% increased speed.
>MIME-Version: 1.0
>Content-Type: text/plain; charset=UTF-8
>Content-Transfer-Encoding: 8bit
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=13302
>
>Signed-off-by: Eric Vannier <evannier@google.com>
>Reviewed-by: Jeremy Allison <jra@samba.org>
>Reviewed-by: BjÃ¶rn Jacke <bjacke@samba.org>
>
>Autobuild-User(master): Jeremy Allison <jra@samba.org>
>Autobuild-Date(master): Tue Mar 27 13:50:09 CEST 2018 on sn-devel-144
>
>(cherry picked from commit 77d88d75f6262a855e818a9b2b4018f8b6ced7b0)
>---
> lib/crypto/aes.c | 16 ----------------
> 1 file changed, 16 deletions(-)
>
>diff --git a/lib/crypto/aes.c b/lib/crypto/aes.c
>index c226ac1b3df..d16d715482e 100644
>--- a/lib/crypto/aes.c
>+++ b/lib/crypto/aes.c
>@@ -66,22 +66,6 @@ static bool has_intel_aes_instructions(void)
> 		return (bool)has_aes_instructions;
> 	}
> 
>-	__cpuid(cpuid_results, 0);
>-	/*
>-	 *        MSB         LSB
>-	 *  EBX = 'u' 'n' 'e' 'G'
>-	 *  EDX = 'I' 'e' 'n' 'i'
>-	 *  ECX = 'l' 'e' 't' 'n'
>-	 */
>-	if (memcmp((unsigned char *)&cpuid_results[1], "Genu", 4) != 0 ||
>-			memcmp((unsigned char *)&cpuid_results[3],
>-				"ineI", 4) != 0 ||
>-			memcmp((unsigned char *)&cpuid_results[2],
>-				"ntel", 4) != 0) {
>-		has_aes_instructions = 0;
>-		return (bool)has_aes_instructions;
>-	}
>-
> 	__cpuid(cpuid_results, 1);
> 	has_aes_instructions = !!(cpuid_results[2] & (1 << 25));
> 	return (bool)has_aes_instructions;
>-- 
>2.17.0.rc0.231.g781580f067-goog
>

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Attachments on bug 13302: 14067 | 14076 | 14077 | 14078 | 14087