linux-kernel - [PATCH 3 of 4] x86: clean up pte

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <ddff52ae92d4f33bcba1.1200435428@localhost>
Date:	Tue, 15 Jan 2008 14:17:08 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>, Andi Kleen <ak@...e.de>,
	Glauber de Oliveira Costa <glommer@...il.com>,
	Jan Beulich <jbeulich@...ell.com>
Subject: [PATCH 3 of 4] x86: clean up pte_modify

pte_modify() got mushed in an apparent mismerge.  Fix it up.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com>

---
 include/asm-x86/pgtable.h |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -176,14 +176,11 @@ static inline pte_t pte_modify(pte_t pte
 {
 	pteval_t val = pte_val(pte);
 
-	val &= _PAGE_CHG_MASK;
-	val |= pgprot_val(newprot);
-
 	/*
 	 * Chop off the NX bit (if present), and add the NX portion of
 	 * the newprot (if present):
 	 */
-	val &= ~_PAGE_NX;
+	val &= _PAGE_CHG_MASK & ~_PAGE_NX;
 	val |= pgprot_val(newprot) & __supported_pte_mask;
 
 	return __pte(val);


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/