linux-kernel - Re: [PATCH v9 00/51] powerpc, mm: Memory Protection Keys

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Message-ID: <8b970e5b-50e6-bcc1-e8d3-6e3aa8523f55@intel.com>
Date:   Tue, 7 Nov 2017 14:47:10 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Ram Pai <linuxram@...ibm.com>, Florian Weimer <fw@...eb.enyo.de>
Cc:     mpe@...erman.id.au, mingo@...hat.com, akpm@...ux-foundation.org,
        corbet@....net, arnd@...db.de, linux-arch@...r.kernel.org,
        ebiederm@...ssion.com, linux-doc@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, mhocko@...nel.org,
        linux-mm@...ck.org, paulus@...ba.org,
        aneesh.kumar@...ux.vnet.ibm.com, linux-kselftest@...r.kernel.org,
        bauerman@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
        khandual@...ux.vnet.ibm.com
Subject: Re: [PATCH v9 00/51] powerpc, mm: Memory Protection Keys

On 11/07/2017 02:39 PM, Ram Pai wrote:
> 
> As per the current semantics of sys_pkey_free(); the way I understand it,
> the calling thread is saying disassociate me from this key.

No.  It is saying: "this *process* no longer has any uses of this key,
it can be reused".