From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id D86BE1A1013 for ; Mon, 6 Jul 2015 20:27:18 +1000 (AEST) Received: from e28smtp03.in.ibm.com (e28smtp03.in.ibm.com [122.248.162.3]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id E0AD7140DC0 for ; Mon, 6 Jul 2015 20:27:17 +1000 (AEST) Received: from /spool/local by e28smtp03.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 6 Jul 2015 15:57:15 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 01B54E004C for ; Mon, 6 Jul 2015 16:00:57 +0530 (IST) Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay05.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t66AQTD530343230 for ; Mon, 6 Jul 2015 15:57:08 +0530 Received: from d28av05.in.ibm.com (localhost [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t66APpmb027757 for ; Mon, 6 Jul 2015 15:55:51 +0530 From: Anshuman Khandual To: linuxppc-dev@ozlabs.org Cc: mikey@neuling.org Subject: [PATCH 2/2] powerpc/signal: Add helper function to fetch quad word aligned pointer Date: Mon, 6 Jul 2015 15:55:34 +0530 Message-Id: <1436178334-15496-2-git-send-email-khandual@linux.vnet.ibm.com> In-Reply-To: <1436178334-15496-1-git-send-email-khandual@linux.vnet.ibm.com> References: <1436178334-15496-1-git-send-email-khandual@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This patch adds one helper function 'vmx_reserve_addr' which computes quad word aligned pointer for vmx_reserve array element in sigcontext structure making the code more readable. Signed-off-by: Anshuman Khandual --- arch/powerpc/kernel/signal_64.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index c7c24d2..e8762f5 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -73,6 +73,12 @@ static const char fmt32[] = KERN_INFO \ static const char fmt64[] = KERN_INFO \ "%s[%d]: bad frame in %s: %016lx nip %016lx lr %016lx\n"; +static elf_vrreg_t __user *vmx_reserve_addr(struct sigcontext __user *sc) +{ + return (elf_vrreg_t __user *) + (((unsigned long)sc->vmx_reserve + 15) & ~0xful); +} + /* * Set up the sigcontext for the signal frame. */ @@ -90,7 +96,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * v_regs pointer or not */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *)(((unsigned long)sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = vmx_reserve_addr(sc); #endif unsigned long msr = regs->msr; long err = 0; @@ -181,10 +187,8 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc, * v_regs pointer or not. */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *) - (((unsigned long)sc->vmx_reserve + 15) & ~0xful); - elf_vrreg_t __user *tm_v_regs = (elf_vrreg_t __user *) - (((unsigned long)tm_sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = vmx_reserve_addr(sc); + elf_vrreg_t __user *tm_v_regs = vmx_reserve_addr(tm_sc); #endif unsigned long msr = regs->msr; long err = 0; -- 2.1.0