linux-kernel - Re: [PATCH v5 05/15] livepatch/powerpc: add TIF_PATCH

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Message-ID: <1488869161.4285.8.camel@gmail.com>
Date:   Tue, 07 Mar 2017 17:46:01 +1100
From:   Balbir Singh <bsingharora@...il.com>
To:     Josh Poimboeuf <jpoimboe@...hat.com>, Jessica Yu <jeyu@...hat.com>,
        Jiri Kosina <jikos@...nel.org>,
        Miroslav Benes <mbenes@...e.cz>, Petr Mladek <pmladek@...e.com>
Cc:     linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <heiko.carstens@...ibm.com>, x86@...nel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        Vojtech Pavlik <vojtech@...e.com>, Jiri Slaby <jslaby@...e.cz>,
        Chris J Arges <chris.j.arges@...onical.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
Subject: Re: [PATCH v5 05/15] livepatch/powerpc: add TIF_PATCH_PENDING
 thread flag

On Mon, 2017-02-13 at 19:42 -0600, Josh Poimboeuf wrote:
> Add the TIF_PATCH_PENDING thread flag to enable the new livepatch
> per-task consistency model for powerpc.  The bit getting set indicates
> the thread has a pending patch which needs to be applied when the thread
> exits the kernel.
> 
> The bit is included in the _TIF_USER_WORK_MASK macro so that
> do_notify_resume() and klp_update_patch_state() get called when the bit
> is set.
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
> Reviewed-by: Petr Mladek <pmladek@...e.com>
> Reviewed-by: Miroslav Benes <mbenes@...e.cz>
> Reviewed-by: Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
> ---

Reviewed-by: Balbir Singh <bsingharora@...il.com>