From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.smarduch@samsung.com (Mario Smarduch) Date: Tue, 16 Jun 2015 14:50:52 -0700 Subject: [PATCH v2 2/2] arm: KVM: keep arm vfp/simd exit handling consistent with arm64 In-Reply-To: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> References: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> Message-ID: <1434491452-19177-3-git-send-email-m.smarduch@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org After enhancing arm64 FP/SIMD exit handling, FP/SIMD exit branch is moved to guest trap handling. This keeps exiting handling flow between both architectures consistent. Signed-off-by: Mario Smarduch --- arch/arm/kvm/interrupts.S | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 79caf79..fca2c56 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -363,10 +363,6 @@ hyp_hvc: @ Check syndrome register mrc p15, 4, r1, c5, c2, 0 @ HSR lsr r0, r1, #HSR_EC_SHIFT -#ifdef CONFIG_VFPv3 - cmp r0, #HSR_EC_CP_0_13 - beq switch_to_guest_vfp -#endif cmp r0, #HSR_EC_HVC bne guest_trap @ Not HVC instr. @@ -406,6 +402,12 @@ THUMB( orr lr, #1) 1: eret guest_trap: +#ifdef CONFIG_VFPv3 + /* Guest accessed VFP/SIMD registers, save host, restore Guest */ + cmp r0, #HSR_EC_CP_0_13 + beq switch_to_guest_fpsimd +#endif + load_vcpu @ Load VCPU pointer to r0 str r1, [vcpu, #VCPU_HSR] @@ -478,7 +480,7 @@ guest_trap: * inject an undefined exception to the guest. */ #ifdef CONFIG_VFPv3 -switch_to_guest_vfp: +switch_to_guest_fpsimd: load_vcpu @ Load VCPU pointer to r0 push {r3-r7} -- 1.7.9.5 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mario Smarduch Subject: [PATCH v2 2/2] arm: KVM: keep arm vfp/simd exit handling consistent with arm64 Date: Tue, 16 Jun 2015 14:50:52 -0700 Message-ID: <1434491452-19177-3-git-send-email-m.smarduch@samsung.com> References: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9573855C47 for ; Tue, 16 Jun 2015 17:41:27 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4ortxHAj4U+n for ; Tue, 16 Jun 2015 17:41:26 -0400 (EDT) Received: from usmailout1.samsung.com (mailout1.w2.samsung.com [211.189.100.11]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id E377755C44 for ; Tue, 16 Jun 2015 17:41:26 -0400 (EDT) Received: from uscpsbgex2.samsung.com (u123.gpu85.samsung.co.kr [203.254.195.123]) by mailout1.w2.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NQ200HUC4QRKL30@mailout1.w2.samsung.com> for kvmarm@lists.cs.columbia.edu; Tue, 16 Jun 2015 17:52:03 -0400 (EDT) In-reply-to: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com, christoffer.dall@linaro.org Cc: catalin.marinas@arm.com, will.deacon@arm.com, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: kvmarm@lists.cs.columbia.edu After enhancing arm64 FP/SIMD exit handling, FP/SIMD exit branch is moved to guest trap handling. This keeps exiting handling flow between both architectures consistent. Signed-off-by: Mario Smarduch --- arch/arm/kvm/interrupts.S | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 79caf79..fca2c56 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -363,10 +363,6 @@ hyp_hvc: @ Check syndrome register mrc p15, 4, r1, c5, c2, 0 @ HSR lsr r0, r1, #HSR_EC_SHIFT -#ifdef CONFIG_VFPv3 - cmp r0, #HSR_EC_CP_0_13 - beq switch_to_guest_vfp -#endif cmp r0, #HSR_EC_HVC bne guest_trap @ Not HVC instr. @@ -406,6 +402,12 @@ THUMB( orr lr, #1) 1: eret guest_trap: +#ifdef CONFIG_VFPv3 + /* Guest accessed VFP/SIMD registers, save host, restore Guest */ + cmp r0, #HSR_EC_CP_0_13 + beq switch_to_guest_fpsimd +#endif + load_vcpu @ Load VCPU pointer to r0 str r1, [vcpu, #VCPU_HSR] @@ -478,7 +480,7 @@ guest_trap: * inject an undefined exception to the guest. */ #ifdef CONFIG_VFPv3 -switch_to_guest_vfp: +switch_to_guest_fpsimd: load_vcpu @ Load VCPU pointer to r0 push {r3-r7} -- 1.7.9.5