[tip:,x86/cleanups] x86/head_64: Use TESTB instead of TESTL in secondary_startup_64_no_verify()
| Message ID | 170247240126.398.13145604902928035582.tip-bot2@tip-bot2 |
|---|---|
| State | New |
| Headers |
Return-Path: <linux-kernel-owner@vger.kernel.org>
Delivered-To: ouuuleilei@gmail.com
Received: by 2002:a05:7300:3b04:b0:fb:cd0c:d3e with SMTP id c4csp7754798dys;
Wed, 13 Dec 2023 05:01:10 -0800 (PST)
X-Google-Smtp-Source:
AGHT+IFpoAYy3L9kncFqJFkqZxOfwWjyoYuQHva8ro5M/+ht1EpX0/J0PzS324zPXngmgdsNGyU2
X-Received: by 2002:a05:6e02:170f:b0:35d:59a2:1288 with SMTP id
u15-20020a056e02170f00b0035d59a21288mr12568325ill.52.1702472469780;
Wed, 13 Dec 2023 05:01:09 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1702472469; cv=none;
d=google.com; s=arc-20160816;
b=MtZm2lyF10SDuZtsUdeIaP4nRlkfDhiEHUgq2gYTIl/XCJGEXufM6AViqQO7d2RjJK
EHTQ15Es8M/UT5wvT/3euw4KAj/ECMWp9LGAQ5/E+194gBH4luOUlEYdoK8RdTfz1ltc
5p3ypqfDdUFgffaui1qQtHm6MZMO+Z9iEbZW5c+Y/6MzJEfbIP2KEU/cFWuh+6sCtyJt
pjHtXKKQrIf1dZzr147EfhHoGb11PhOqPSQflCMMvlQfuDHsd6xi6izGllmnHbQjd1lL
HOD/TOMM2f2B92z+YP6XRLFQscFV2qaSw7LUxKzOwcIvqkKV8TflZQAoZaP0njjW3Btj
S2hQ==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com;
s=arc-20160816;
h=list-id:precedence:content-transfer-encoding:robot-unsubscribe
:robot-id:message-id:mime-version:references:in-reply-to:cc:subject
:to:reply-to:sender:from:dkim-signature:dkim-signature:date;
bh=S+IhSpyWTQ/axW+CWLsdfkEGbDn1Jz0prTjI1ZqS1To=;
fh=FZ760BpCS5Nek9ALcG2HF38HHnsKGk1BPcJPAVRmV5A=;
b=QU+uEl1Po+/v8pWVK17MKMoiMIZ0klypWCgWjoqWD4PYxBelQZm8ojtx7p7eQtxfW2
s9G9M9OoJ6egJK7UWqSmypZ1/siv091EEOso+mCNuWEpDL+GQCcd54KBGb4bVuGn3Z4r
4YZFf+0vG2kkkRUcAIaOFz21Dd2LXCV7OYSrV0IYM6F4Tzpe3WU/YkpydjgX55s7VPvK
KrCacdZcW2fpNvc9s/eiSkVVPmsceSludVaczYmOCHj4GO993kUWVdvpnomTPz6Ss9wG
Pu7+uPXU+1JRJQnwEEgbL461CKSIhgKUKWkzAoHgWYbXYzbfJ0KDA2Z8+Wc3qgakV2d/
Qh8Q==
ARC-Authentication-Results: i=1; mx.google.com;
dkim=pass header.i=@linutronix.de header.s=2020 header.b=NLSslS5I;
dkim=neutral (no key) header.i=@linutronix.de header.s=2020e;
spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org
designates 23.128.96.37 as permitted sender)
smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de
Received: from snail.vger.email (snail.vger.email. [23.128.96.37])
by mx.google.com with ESMTPS id
cn6-20020a056a020a8600b005c65c11ad0dsi9368355pgb.772.2023.12.13.05.01.06
(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);
Wed, 13 Dec 2023 05:01:09 -0800 (PST)
Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org
designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37;
Authentication-Results: mx.google.com;
dkim=pass header.i=@linutronix.de header.s=2020 header.b=NLSslS5I;
dkim=neutral (no key) header.i=@linutronix.de header.s=2020e;
spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org
designates 23.128.96.37 as permitted sender)
smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de
Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0])
by snail.vger.email (Postfix) with ESMTP id 9AE0F80747A1;
Wed, 13 Dec 2023 05:00:22 -0800 (PST)
X-Virus-Status: Clean
X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
id S233583AbjLMNAF (ORCPT <rfc822;dexuan.linux@gmail.com>
+ 99 others); Wed, 13 Dec 2023 08:00:05 -0500
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60292 "EHLO
lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S233434AbjLMNAB (ORCPT
<rfc822;linux-kernel@vger.kernel.org>);
Wed, 13 Dec 2023 08:00:01 -0500
Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55])
by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C046FE;
Wed, 13 Dec 2023 05:00:04 -0800 (PST)
Date: Wed, 13 Dec 2023 13:00:01 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de;
s=2020; t=1702472402;
h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date:
message-id:message-id:to:to:cc:cc:mime-version:mime-version:
content-type:content-type:
content-transfer-encoding:content-transfer-encoding:
in-reply-to:in-reply-to:references:references;
bh=S+IhSpyWTQ/axW+CWLsdfkEGbDn1Jz0prTjI1ZqS1To=;
b=NLSslS5ICLrIG0BxDdoCbbqWBzKURefiIdkAqp6AELB3x5kzY4lWsUyRN7BicbAdIU3P5r
aeFGCVmK3Md/cgpu/PO2HltA7v6oi0PU5hWwao0rvj18HBA6yctmmpeKjIq4A3XJ6vXde0
DEQuAKfPyKuwUMBsM34WdojmVhTp5X/8WjsrODHpRJEkkJfOypVwGuYYhMuacU857nR5tT
K+LP6/YxDFTHdAGvXLTTm4F2N/amBoBlnmQDGq//NofKk+oSgmU4Hh8kzKw42WXyeeQLAC
aiRIq3LUSFICZrBAFqisMau5uGVjs6BDccWjQhDcG3w72hQb+7qR9ngoDjjK7Q==
DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de;
s=2020e; t=1702472402;
h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date:
message-id:message-id:to:to:cc:cc:mime-version:mime-version:
content-type:content-type:
content-transfer-encoding:content-transfer-encoding:
in-reply-to:in-reply-to:references:references;
bh=S+IhSpyWTQ/axW+CWLsdfkEGbDn1Jz0prTjI1ZqS1To=;
b=ycDsrcYyqZcAmxl5g3k2nWUHrcDtAlf3ykcleR3oWS7Olx3enzWBCxQmyj8+7/DezZ37So
uPg3HAvwqWdZQCDA==
From: "tip-bot2 for Uros Bizjak" <tip-bot2@linutronix.de>
Sender: tip-bot2@linutronix.de
Reply-to: linux-kernel@vger.kernel.org
To: linux-tip-commits@vger.kernel.org
Subject: [tip: x86/cleanups] x86/head_64: Use TESTB instead of TESTL in
secondary_startup_64_no_verify()
Cc: Uros Bizjak <ubizjak@gmail.com>,
"Borislav Petkov (AMD)" <bp@alien8.de>, x86@kernel.org,
linux-kernel@vger.kernel.org
In-Reply-To: <20231109201032.4439-1-ubizjak@gmail.com>
References: <20231109201032.4439-1-ubizjak@gmail.com>
MIME-Version: 1.0
Message-ID: <170247240126.398.13145604902928035582.tip-bot2@tip-bot2>
Robot-ID: <tip-bot2@linutronix.de>
Robot-Unsubscribe: Contact <mailto:tglx@linutronix.de> to get blacklisted from
these emails
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,
DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,
SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no
version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
X-Greylist: Sender passed SPF test,
not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]);
Wed, 13 Dec 2023 05:00:22 -0800 (PST)
X-getmail-retrieved-from-mailbox: INBOX
X-GMAIL-THRID: 1785171772244168918
X-GMAIL-MSGID: 1785171772244168918
|
| Series |
[tip:,x86/cleanups] x86/head_64: Use TESTB instead of TESTL in secondary_startup_64_no_verify()
|
|
Commit Message
tip-bot2 for Thomas Gleixner
Dec. 13, 2023, 1 p.m. UTC
The following commit has been merged into the x86/cleanups branch of tip: Commit-ID: 7d28365a06af74cee015a448d32ab6e98cd05cfb Gitweb: https://git.kernel.org/tip/7d28365a06af74cee015a448d32ab6e98cd05cfb Author: Uros Bizjak <ubizjak@gmail.com> AuthorDate: Thu, 09 Nov 2023 21:09:56 +01:00 Committer: Borislav Petkov (AMD) <bp@alien8.de> CommitterDate: Wed, 13 Dec 2023 13:35:38 +01:00 x86/head_64: Use TESTB instead of TESTL in secondary_startup_64_no_verify() There is no need to use TESTL when checking the least-significant bit with a TEST instruction. Use TESTB, which is three bytes shorter: f6 05 00 00 00 00 01 testb $0x1,0x0(%rip) vs: f7 05 00 00 00 00 01 testl $0x1,0x0(%rip) 00 00 00 for the same effect. No functional changes intended. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20231109201032.4439-1-ubizjak@gmail.com --- arch/x86/kernel/head_64.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 086a2c3..1f79d80 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -182,7 +182,7 @@ SYM_INNER_LABEL(secondary_startup_64_no_verify, SYM_L_GLOBAL) /* Enable PAE mode, PSE, PGE and LA57 */ orl $(X86_CR4_PAE | X86_CR4_PSE | X86_CR4_PGE), %ecx #ifdef CONFIG_X86_5LEVEL - testl $1, __pgtable_l5_enabled(%rip) + testb $1, __pgtable_l5_enabled(%rip) jz 1f orl $X86_CR4_LA57, %ecx 1: