linux-kernel - Re: [PATCH V4] powerpc: Implement {cmp}xchg for u8 and u16

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: <5721E437.8050900@linux.vnet.ibm.com>
Date:	Thu, 28 Apr 2016 18:21:43 +0800
From:	Pan Xinhui <xinhui@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
	boqun.feng@...il.com, paulmck@...ux.vnet.ibm.com,
	tglx@...utronix.de
Subject: Re: [PATCH V4] powerpc: Implement {cmp}xchg for u8 and u16



On 2016年04月28日 15:59, Peter Zijlstra wrote:
> On Wed, Apr 27, 2016 at 05:16:45PM +0800, Pan Xinhui wrote:
>> From: Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>
>>
>> Implement xchg{u8,u16}{local,relaxed}, and
>> cmpxchg{u8,u16}{,local,acquire,relaxed}.
>>
>> It works on all ppc.
>>
>> remove volatile of first parameter in __cmpxchg_local and __cmpxchg
>>
>> Suggested-by: Peter Zijlstra (Intel) <peterz@...radead.org>
>> Signed-off-by: Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>
> 
> Generally has the right shape; and I trust others to double check the
> ppc-asm minutia.
> 
> Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> 
> 
thanks!