linux-kernel - [PATCH RFC 3/6] MIPS: BMIPS: Avoid referencing CKSEG1

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: <1516758426-8127-4-git-send-email-f.fainelli@gmail.com>
Date:   Tue, 23 Jan 2018 17:47:03 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-mips@...ux-mips.org
Cc:     Florian Fainelli <florian.fainelli@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Kevin Cernekee <cernekee@...il.com>,
        James Hogan <jhogan@...nel.org>,
        Paul Burton <paul.burton@...s.com>,
        Matt Redfearn <matt.redfearn@...s.com>,
        "Maciej W. Rozycki" <macro@...s.com>,
        Huacai Chen <chenhc@...ote.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Marcin Nowakowski <marcin.nowakowski@...s.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Ingo Molnar <mingo@...nel.org>,
        David Howells <dhowells@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Thomas Meyer <thomas@...3r.de>,
        "Bryan O'Donoghue" <pure.logic@...us-software.ie>,
        Robin Murphy <robin.murphy@....com>,
        Michal Hocko <mhocko@...e.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Vladimir Murzin <vladimir.murzin@....com>,
        Bart Van Assche <bart.vanassche@...disk.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH RFC 3/6] MIPS: BMIPS: Avoid referencing CKSEG1

From: Florian Fainelli <florian.fainelli@...adcom.com>

bmips_smp_movevec() references the CKSEG1 constant, which is about to be
updated in order to support processors that might enable eXtended
KSEG0/1. In doing so, we will generate a reference to a function, which
is obviously not permissible within assembly. Fortunately,
bmips_smp_movevec() is only used on BMIPS4350 which does not support
eXtended KSEG0/1.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 arch/mips/kernel/bmips_vec.S | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/kernel/bmips_vec.S b/arch/mips/kernel/bmips_vec.S
index 921a5fa55da6..10ea69f3859f 100644
--- a/arch/mips/kernel/bmips_vec.S
+++ b/arch/mips/kernel/bmips_vec.S
@@ -39,7 +39,7 @@
 
 LEAF(bmips_smp_movevec)
 	la	k0, 1f
-	li	k1, CKSEG1
+	li	k1, 0xa0000000
 	or	k0, k1
 	jr	k0
 
@@ -58,7 +58,7 @@ LEAF(bmips_smp_movevec)
 	mfc0	k1, $22, 3
 	srl	k1, 16
 	andi	k1, 0x8000
-	or	k1, CKSEG1 | BMIPS_RELO_VECTOR_CONTROL_0
+	or	k1, 0xa0000000 | BMIPS_RELO_VECTOR_CONTROL_0
 	or	k0, k1
 	li	k1, 0xa0080000
 	sw	k1, 0(k0)
@@ -67,7 +67,7 @@ LEAF(bmips_smp_movevec)
 	wait
 
 	la	k0, bmips_reset_nmi_vec
-	li	k1, CKSEG1
+	li	k1, 0xa0000000
 	or	k0, k1
 	jr	k0
 END(bmips_smp_movevec)
-- 
2.7.4