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Mon, 20 Jul 2020 09:14:37 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id BED2A306CEE; Mon, 20 Jul 2020 11:14:35 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id B0D04205A7673; Mon, 20 Jul 2020 11:14:35 +0200 (CEST) Date: Mon, 20 Jul 2020 11:14:35 +0200 From: Peter Zijlstra To: Ira Weiny Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Fenghua Yu , x86@kernel.org, Dave Hansen , Dan Williams , Vishal Verma , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH RFC V2 02/17] x86/fpu: Refactor arch_set_user_pkey_access() for PKS support Message-ID: <20200720091435.GM10769@hirez.programming.kicks-ass.net> References: <20200717072056.73134-1-ira.weiny@intel.com> <20200717072056.73134-3-ira.weiny@intel.com> <20200717085442.GX10769@hirez.programming.kicks-ass.net> <20200717205254.GQ3008823@iweiny-DESK2.sc.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200717205254.GQ3008823@iweiny-DESK2.sc.intel.com> X-Rspamd-Queue-Id: 80C3C10046C9D X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jul 17, 2020 at 01:52:55PM -0700, Ira Weiny wrote: > On Fri, Jul 17, 2020 at 10:54:42AM +0200, Peter Zijlstra wrote: > > Then we at least have a little clue wtf the thing does.. Yes I started > > with a rename and then got annoyed at the implementation too. > > On the code I think this is fair. I've also updated the calling function to be > a bit cleaner as well. > > However, I think the name 'update' is a bit misleading. Here is the new > calling code: > > ... > pkru = read_pkru(); > pkru = update_pkey_reg(pkru, pkey, init_val); > write_pkru(pkru); > ... > > > I think it is odd to have a function called update_pkey_reg() called right > before a write_pkru(). Can we call this update_pkey_value? or just 'val'? > Because write_pkru() actually updates the register. Fair enough, update_pkey_val() works fine for me.