linux-kernel - [PATCH v5 1/7] x86/tlb: unify TLB_FLUSH

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]

Date:	Tue, 15 May 2012 16:55:32 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, arnd@...db.de,
	rostedt@...dmis.org, fweisbec@...il.com
Cc:	jeremy@...p.org, riel@...hat.com, luto@....edu, alex.shi@...el.com,
	avi@...hat.com, len.brown@...el.com, dhowells@...hat.com,
	fenghua.yu@...el.com, borislav.petkov@....com, yinghai@...nel.org,
	ak@...ux.intel.com, cpw@....com, steiner@....com,
	akpm@...ux-foundation.org, penberg@...nel.org, hughd@...gle.com,
	rientjes@...gle.com, kosaki.motohiro@...fujitsu.com,
	n-horiguchi@...jp.nec.com, tj@...nel.org, oleg@...hat.com,
	axboe@...nel.dk, jmorris@...ei.org, a.p.zijlstra@...llo.nl,
	kamezawa.hiroyu@...fujitsu.com, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org, yongjie.ren@...el.com
Subject: [PATCH v5 1/7] x86/tlb: unify TLB_FLUSH_ALL definition

32bits kernel is using ILP32 model. 64 bits kernel is using LP64 model.
So, here TLB_FLUSH_ALL can be defined as '-1UL', that fit in both
x86_32/x86_64 mode.

Thanks for Rob Landley and Peter Avin's infos

http://www.unix.org/whitepapers/64bit.html
http://www.unix.org/version2/whatsnew/lp64_wp.html

Signed-off-by: Alex Shi <alex.shi@...el.com>
---
 arch/x86/include/asm/tlbflush.h |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index c0e108e..7e8a096 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -62,11 +62,7 @@ static inline void __flush_tlb_one(unsigned long addr)
 		__flush_tlb();
 }
 
-#ifdef CONFIG_X86_32
-# define TLB_FLUSH_ALL	0xffffffff
-#else
-# define TLB_FLUSH_ALL	-1ULL
-#endif
+#define TLB_FLUSH_ALL	-1UL
 
 /*
  * TLB flushing:
-- 
1.7.5.4

--
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/