From patchwork Tue May 13 16:13:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Kamensky X-Patchwork-Id: 4169451 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6E21A9F1C0 for ; Tue, 13 May 2014 16:18:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 93F4620221 for ; Tue, 13 May 2014 16:18:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A91682020A for ; Tue, 13 May 2014 16:18:36 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WkFMh-0002la-Qr; Tue, 13 May 2014 16:15:39 +0000 Received: from mail-pa0-f48.google.com ([209.85.220.48]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WkFMI-0001SH-RL for linux-arm-kernel@lists.infradead.org; Tue, 13 May 2014 16:15:15 +0000 Received: by mail-pa0-f48.google.com with SMTP id rd3so457444pab.7 for ; Tue, 13 May 2014 09:14:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=on+ja2/7EKDfPSQ4q3/XJdKoheHwaB8CghWdtv0oU+c=; b=NP4eU5pE+F2MC7LDgwiubPwRW17m+GyteC7T3wAFl+eghLiX/O/XuENkDkiWm1M50i PYA0t+2cKXtaDOG751TR7lts9OcU9FrMrMoqIw2BIKZ1v3czvZSDxIj82DlFXi0YgVNB c5sEOwe+YOcVx+/DXudOoOJnyqsA8Y74MjDVpB0m337WNrbrMq6JuwboNj0s1d85WNtE Sj83uG17356T2C4fU67C+VEz4oSyEpAzG7N0MpjxPUSbXypwAJWRmEvUxOW6uTknaZcv AYR3QhUDcmopsmfWzfd7j1S4LCyxbwlHbQNNUbzUB+zbBLeI+7+m5x3gdgRDaAcxXvgJ 1UQw== X-Gm-Message-State: ALoCoQngqCECwqMl6wiWrEZiaPSxUFz11OCqx30k1QWXEMd8vprEoFcNP9q1lx0HJ5knlg/mtTpX X-Received: by 10.68.130.130 with SMTP id oe2mr6235360pbb.136.1399997693112; Tue, 13 May 2014 09:14:53 -0700 (PDT) Received: from kamensky-w530.hsd1.ca.comcast.net (c-24-6-79-41.hsd1.ca.comcast.net. [24.6.79.41]) by mx.google.com with ESMTPSA id dd5sm28958360pbc.85.2014.05.13.09.14.50 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 May 2014 09:14:52 -0700 (PDT) From: Victor Kamensky To: kvmarm@lists.cs.columbia.edu, christoffer.dall@linaro.org, marc.zyngier@arm.com, agraf@suse.de Subject: [PATCH v3 02/14] ARM: KVM: fix vgic V7 assembler code to work in BE image Date: Tue, 13 May 2014 09:13:54 -0700 Message-Id: <1399997646-4716-3-git-send-email-victor.kamensky@linaro.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1399997646-4716-1-git-send-email-victor.kamensky@linaro.org> References: <1399997646-4716-1-git-send-email-victor.kamensky@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140513_091514_946830_961CA654 X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: taras.kondratiuk@linaro.org, linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, Victor Kamensky X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The vgic h/w registers are little endian; when BE asm code reads/writes from/to them, it needs to do byteswap after/before. Byteswap code uses ARM_BE8 wrapper to add swap only if CONFIG_CPU_BIG_ENDIAN is configured. Signed-off-by: Victor Kamensky Reviewed-by: Christoffer Dall Acked-by: Marc Zyngier --- arch/arm/kvm/interrupts_head.S | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S index 76af9302..e627858 100644 --- a/arch/arm/kvm/interrupts_head.S +++ b/arch/arm/kvm/interrupts_head.S @@ -1,4 +1,5 @@ #include +#include #define VCPU_USR_REG(_reg_nr) (VCPU_USR_REGS + (_reg_nr * 4)) #define VCPU_USR_SP (VCPU_USR_REG(13)) @@ -420,6 +421,14 @@ vcpu .req r0 @ vcpu pointer always in r0 ldr r8, [r2, #GICH_ELRSR0] ldr r9, [r2, #GICH_ELRSR1] ldr r10, [r2, #GICH_APR] +ARM_BE8(rev r3, r3 ) +ARM_BE8(rev r4, r4 ) +ARM_BE8(rev r5, r5 ) +ARM_BE8(rev r6, r6 ) +ARM_BE8(rev r7, r7 ) +ARM_BE8(rev r8, r8 ) +ARM_BE8(rev r9, r9 ) +ARM_BE8(rev r10, r10 ) str r3, [r11, #VGIC_CPU_HCR] str r4, [r11, #VGIC_CPU_VMCR] @@ -439,6 +448,7 @@ vcpu .req r0 @ vcpu pointer always in r0 add r3, r11, #VGIC_CPU_LR ldr r4, [r11, #VGIC_CPU_NR_LR] 1: ldr r6, [r2], #4 +ARM_BE8(rev r6, r6 ) str r6, [r3], #4 subs r4, r4, #1 bne 1b @@ -466,6 +476,9 @@ vcpu .req r0 @ vcpu pointer always in r0 ldr r3, [r11, #VGIC_CPU_HCR] ldr r4, [r11, #VGIC_CPU_VMCR] ldr r8, [r11, #VGIC_CPU_APR] +ARM_BE8(rev r3, r3 ) +ARM_BE8(rev r4, r4 ) +ARM_BE8(rev r8, r8 ) str r3, [r2, #GICH_HCR] str r4, [r2, #GICH_VMCR] @@ -476,6 +489,7 @@ vcpu .req r0 @ vcpu pointer always in r0 add r3, r11, #VGIC_CPU_LR ldr r4, [r11, #VGIC_CPU_NR_LR] 1: ldr r6, [r3], #4 +ARM_BE8(rev r6, r6 ) str r6, [r2], #4 subs r4, r4, #1 bne 1b