From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x242.google.com (mail-pf0-x242.google.com [IPv6:2607:f8b0:400e:c00::242]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3tjX026Q2vzDwTb for ; Tue, 20 Dec 2016 20:04:02 +1100 (AEDT) Received: by mail-pf0-x242.google.com with SMTP id 144so8705563pfv.0 for ; Tue, 20 Dec 2016 01:04:02 -0800 (PST) Subject: Re: [PATCH v4 02/12] powerpc: move set_soft_enabled() and rename To: Madhavan Srinivasan , benh@kernel.crashing.org, mpe@ellerman.id.au References: <1482134828-18811-1-git-send-email-maddy@linux.vnet.ibm.com> <1482134828-18811-3-git-send-email-maddy@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org, anton@samba.org, npiggin@gmail.com From: Balbir Singh Message-ID: Date: Tue, 20 Dec 2016 20:03:39 +1100 MIME-Version: 1.0 In-Reply-To: <1482134828-18811-3-git-send-email-maddy@linux.vnet.ibm.com> Content-Type: text/plain; charset=windows-1252 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 19/12/16 19:06, Madhavan Srinivasan wrote: > Move set_soft_enabled() from powerpc/kernel/irq.c to > asm/hw_irq.c, to force updates to paca-soft_enabled > done via these access function. Add "memory" clobber > to hint compiler since paca->soft_enabled memory is the target > here > +static inline notrace void soft_enabled_set(unsigned long enable) > +{ > + __asm__ __volatile__("stb %0,%1(13)" > + : : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled)) > + : "memory"); > +} > + Can't we just rewrite this in "C"? local_paca->soft_enabled = enable Balbir Singh.