linux-kernel - Re: [PATCH RFC V3 2/9] x86/fpu: Refactor arch_set_user_pkey

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Message-ID: <20201019093502.GH2628@hirez.programming.kicks-ass.net>
Date:   Mon, 19 Oct 2020 11:35:02 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Ira Weiny <ira.weiny@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Fenghua Yu <fenghua.yu@...el.com>, x86@...nel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH RFC V3 2/9] x86/fpu: Refactor arch_set_user_pkey_access()
 for PKS support

On Fri, Oct 16, 2020 at 08:32:03PM -0700, Ira Weiny wrote:
> On Fri, Oct 16, 2020 at 12:57:43PM +0200, Peter Zijlstra wrote:
> > On Fri, Oct 09, 2020 at 12:42:51PM -0700, ira.weiny@...el.com wrote:
> > > From: Fenghua Yu <fenghua.yu@...el.com>
> > > 
> > > Define a helper, update_pkey_val(), which will be used to support both
> > > Protection Key User (PKU) and the new Protection Key for Supervisor
> > > (PKS) in subsequent patches.
> > > 
> > > Co-developed-by: Ira Weiny <ira.weiny@...el.com>
> > > Signed-off-by: Ira Weiny <ira.weiny@...el.com>
> > > Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
> > > ---
> > >  arch/x86/include/asm/pkeys.h |  2 ++
> > >  arch/x86/kernel/fpu/xstate.c | 22 ++++------------------
> > >  arch/x86/mm/pkeys.c          | 21 +++++++++++++++++++++
> > >  3 files changed, 27 insertions(+), 18 deletions(-)
> > 
> > This is not from Fenghua.
> > 
> >   https://lkml.kernel.org/r/20200717085442.GX10769@hirez.programming.kicks-ass.net
> > 
> > This is your patch based on the code I wrote.
> 
> Ok, I apologize.  Yes the code below was all yours.
> 
> Is it ok to add?
> 
> Co-developed-by: Peter Zijlstra <peterz@...radead.org>
> Signed-off-by: Peter Zijlstra <peterz@...radead.org>
> 

Sure, thanks!