From patchwork Mon Nov 14 21:08:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andrew Jones X-Patchwork-Id: 694722 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3tHjr46lN3z9t10 for ; Tue, 15 Nov 2016 08:11:32 +1100 (AEDT) Received: from localhost ([::1]:42677 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6OXJ-0002En-UK for incoming@patchwork.ozlabs.org; Mon, 14 Nov 2016 16:11:29 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45127) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6OUn-0008Oc-V5 for qemu-devel@nongnu.org; Mon, 14 Nov 2016 16:08:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c6OUm-0001tg-PI for qemu-devel@nongnu.org; Mon, 14 Nov 2016 16:08:53 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44216) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c6OUk-0001rN-Iw; Mon, 14 Nov 2016 16:08:50 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D357AC05AA71; Mon, 14 Nov 2016 21:08:49 +0000 (UTC) Received: from kamzik.brq.redhat.com (kamzik.brq.redhat.com [10.34.1.143]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id uAEL8fjV014878; Mon, 14 Nov 2016 16:08:47 -0500 From: Andrew Jones To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, qemu-devel@nongnu.org, qemu-arm@nongnu.org Date: Mon, 14 Nov 2016 22:08:30 +0100 Message-Id: <1479157719-31021-3-git-send-email-drjones@redhat.com> In-Reply-To: <1479157719-31021-1-git-send-email-drjones@redhat.com> References: <1479157719-31021-1-git-send-email-drjones@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Mon, 14 Nov 2016 21:08:49 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [kvm-unit-tests PATCH v6 02/11] arm64: fix get_"sysreg32" and make MPIDR 64bit X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, marc.zyngier@arm.com, andre.przywara@arm.com, eric.auger@redhat.com, pbonzini@redhat.com, alex.bennee@linaro.org, christoffer.dall@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" mrs is always 64bit, so we should always use a 64bit register. Sometimes we'll only want to return the lower 32, but not for MPIDR, as that does define fields in the upper 32. Reviewed-by: Alex Bennée Reviewed-by: Eric Auger Signed-off-by: Andrew Jones --- v5: switch arm32's get_mpidr to 'unsigned long' too, to be consistent with arm64 [Andre] --- lib/arm/asm/processor.h | 4 ++-- lib/arm64/asm/processor.h | 15 +++++++++------ 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/lib/arm/asm/processor.h b/lib/arm/asm/processor.h index f25e7eee3666..02f912f99974 100644 --- a/lib/arm/asm/processor.h +++ b/lib/arm/asm/processor.h @@ -33,9 +33,9 @@ static inline unsigned long current_cpsr(void) #define current_mode() (current_cpsr() & MODE_MASK) -static inline unsigned int get_mpidr(void) +static inline unsigned long get_mpidr(void) { - unsigned int mpidr; + unsigned long mpidr; asm volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (mpidr)); return mpidr; } diff --git a/lib/arm64/asm/processor.h b/lib/arm64/asm/processor.h index 84d5c7ce752b..9a208ff729b7 100644 --- a/lib/arm64/asm/processor.h +++ b/lib/arm64/asm/processor.h @@ -66,14 +66,17 @@ static inline unsigned long current_level(void) return el & 0xc; } -#define DEFINE_GET_SYSREG32(reg) \ -static inline unsigned int get_##reg(void) \ +#define DEFINE_GET_SYSREG(reg, type) \ +static inline type get_##reg(void) \ { \ - unsigned int reg; \ - asm volatile("mrs %0, " #reg "_el1" : "=r" (reg)); \ - return reg; \ + unsigned long r; \ + asm volatile("mrs %0, " #reg "_el1" : "=r" (r)); \ + return (type)r; \ } -DEFINE_GET_SYSREG32(mpidr) +#define DEFINE_GET_SYSREG32(reg) DEFINE_GET_SYSREG(reg, unsigned int) +#define DEFINE_GET_SYSREG64(reg) DEFINE_GET_SYSREG(reg, unsigned long) + +DEFINE_GET_SYSREG64(mpidr) /* Only support Aff0 for now, gicv2 only */ #define mpidr_to_cpu(mpidr) ((int)((mpidr) & 0xff))