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:	Wed, 22 Dec 2010 21:28:04 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Shaohui Zheng <shaohui.zheng@...ux.intel.com>
Cc:	shaohui.zheng@...el.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, haicheng.li@...ux.intel.com,
	lethal@...ux-sh.org, ak@...ux.intel.com, rientjes@...gle.com,
	dave@...ux.vnet.ibm.com, gregkh@...e.de,
	Ingo Molnar <mingo@...e.hu>, Len Brown <len.brown@...el.com>,
	Yinghai Lu <Yinghai.Lu@....COM>, Tejun Heo <tj@...nel.org>,
	Haicheng Li <haicheng.li@...el.com>
Subject: Re: [5/7, v9] NUMA Hotplug Emulator: Support cpu probe/release in
 x86_64

On Thu, 23 Dec 2010 10:24:28 +0800 Shaohui Zheng <shaohui.zheng@...ux.intel.com> wrote:

> > 
> > Why *does* it check `count' and then not use it?
> > 
> 
> it is a tricky thing. When I debug it under a Virtual Machine, If I do a cpu
> probe via sysfs cpu/probe interface, The function arch_cpu_probe will be called
> __three__ times, but only one call is valid, so I add a check on `count` to
> ignore the invalid calls.

hm, why does it get called three times?  Is that something which
can/should be fixed in callers rather than in the callee?

--
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/

Powered by blists - more mailing lists