From patchwork Tue Aug 26 23:51:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Smarduch X-Patchwork-Id: 4784681 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8C7D6C0338 for ; Tue, 26 Aug 2014 23:56:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AB46E201F7 for ; Tue, 26 Aug 2014 23:56:08 +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 BDE43201DD for ; Tue, 26 Aug 2014 23:56:07 +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 1XMQX1-0003hP-FX; Tue, 26 Aug 2014 23:52:07 +0000 Received: from mailout2.w2.samsung.com ([211.189.100.12] helo=usmailout2.samsung.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XMQWh-0003M1-N9 for linux-arm-kernel@lists.infradead.org; Tue, 26 Aug 2014 23:51:48 +0000 Received: from uscpsbgex3.samsung.com (u124.gpu85.samsung.co.kr [203.254.195.124]) by mailout2.w2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NAX00IIEU9PO380@mailout2.w2.samsung.com> for linux-arm-kernel@lists.infradead.org; Tue, 26 Aug 2014 19:51:25 -0400 (EDT) X-AuditID: cbfec37c-b7fde6d000000c64-d0-53fd1d7da431 Received: from usmmp2.samsung.com ( [203.254.195.78]) by uscpsbgex3.samsung.com (USCPEXMTA) with SMTP id 10.01.03172.D7D1DF35; Tue, 26 Aug 2014 19:51:25 -0400 (EDT) Received: from sisasmtp.sisa.samsung.com ([105.144.21.116]) by usmmp2.samsung.com (Oracle Communications Messaging Server 7u4-27.01(7.0.4.27.0) 64bit (built Aug 30 2012)) with ESMTP id <0NAX00027U9OFN80@usmmp2.samsung.com>; Tue, 26 Aug 2014 19:51:25 -0400 (EDT) Received: from mjsmard-530U3C-530U4C-532U3C.sisa.samsung.com (105.144.129.72) by SISAEX02SJ.sisa.samsung.com (105.144.21.116) with Microsoft SMTP Server (TLS) id 14.1.421.2; Tue, 26 Aug 2014 16:51:23 -0700 From: Mario Smarduch To: christoffer.dall@linaro.org, marc.zyngier@arm.com, pbonzini@redhat.com, ralf@linux-mips.org, gleb@kernel.org, agraf@suse.de, borntraeger@de.ibm.com, cornelia.huck@de.ibm.com, xiaoguangrong@linux.vnet.ibm.com Subject: [PATCH v10 3/6] arm: KVM: Add ARMv7 API to flush TLBs Date: Tue, 26 Aug 2014 16:51:09 -0700 Message-id: <1409097072-1096-4-git-send-email-m.smarduch@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1409097072-1096-1-git-send-email-m.smarduch@samsung.com> References: <1409097072-1096-1-git-send-email-m.smarduch@samsung.com> MIME-version: 1.0 X-Originating-IP: [105.144.129.72] X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrGLMWRmVeSWpSXmKPExsVy+t9hP91a2b/BBp0XuC1OXPnHaDF9xXYW ixevgaz5zY2MFl9+Xme0mDO10GLT42usFn/v/GOz2L/tH6vFpT0qFpPebGOyWPj/JqMDj8ea eWsYPQ4+OsTmsWlVJ5vHnWt72DyOrlzL5PHg0GYWj81L6j3e77vK5rH5dLXH501yAVxRXDYp qTmZZalF+nYJXBn/Tk5nLlgvWtG6ax1LA2OjUBcjJ4eEgInE7sWr2SBsMYkL99YD2VwcQgLL GCV2Tn/BDOH0Mkl8+bKdBcK5yCgxo6eZCaSFTUBXYv+9jewgtojAdUaJtx+qQGxmgTqJB3uf sYLYwgJ2Ej9+tjOD2CwCqhLPVrwEsjk4eAVcJTZ0+4OYEgIKEnMm2YBUcAq4Sbx8+RXsICGg ii3/XoDZvAKCEj8m32MBKWcWkJB4/lkJokRVYtvN54wQ9ytJXJ07k2UCo9AsJB2zEDoWMDKt YhQrLU4uKE5KT60w1itOzC0uzUvXS87P3cQIiauaHYz3vtocYhTgYFTi4f2w4E+wEGtiWXFl 7iFGCQ5mJRHeH0lAId6UxMqq1KL8+KLSnNTiQ4xMHJxSDYxZ+tOfrChoUvxy8qzqG8m2rtlM mzS25+h63fzqq1X86eA+y5Bq3+UfXUpLOASauxQz16pXu92VPu21odpYZ5/1A6ddOvU9ZfP+ 3JpzPnSeiRqzVnnf480nWF64daxZcMh28cFtt0IVZRhr51/kO+gjLXX5qN8Luc6qaadck9s3 tt5riZO/WarEUpyRaKjFXFScCAD1hKFTiQIAAA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140826_165147_828646_52F5DC70 X-CRM114-Status: UNSURE ( 8.54 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) Cc: Mario Smarduch , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, steve.capper@arm.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, 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 This patch adds ARMv7 architecture TLB Flush function. Signed-off-by: Mario Smarduch --- arch/arm/include/asm/kvm_asm.h | 1 + arch/arm/include/asm/kvm_host.h | 12 ++++++++++++ arch/arm/kvm/Kconfig | 1 + arch/arm/kvm/interrupts.S | 12 ++++++++++++ 4 files changed, 26 insertions(+) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 53b3c4a..21bc519 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -78,6 +78,7 @@ extern char __kvm_hyp_code_end[]; extern void __kvm_flush_vm_context(void); extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); +extern void __kvm_tlb_flush_vmid(struct kvm *kvm); extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu); #endif diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 8fc078d..42877dd 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -220,6 +220,18 @@ static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, kvm_call_hyp((void*)hyp_stack_ptr, vector_ptr, pgd_ptr); } +/** + * kvm_arch_flush_remote_tlbs() - flush all VM TLB entries + * @kvm: pointer to kvm structure. + * + * Interface to HYP function to flush all VM TLB entries without address + * parameter. + */ +static inline void kvm_arch_flush_remote_tlbs(struct kvm *kvm) +{ + kvm_call_hyp(__kvm_tlb_flush_vmid, kvm); +} + static inline int kvm_arch_dev_ioctl_check_extension(long ext) { return 0; diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index cd9bb1c..eba8b00 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -24,6 +24,7 @@ config KVM select KVM_MMIO select KVM_ARM_HOST select HAVE_KVM_ARCH_DIRTY_LOG + select HAVE_KVM_ARCH_TLB_FLUSH_ALL depends on ARM_VIRT_EXT && ARM_LPAE && !CPU_BIG_ENDIAN ---help--- Support hosting virtualized guest machines. You will also diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 0d68d40..1258d46 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -66,6 +66,18 @@ ENTRY(__kvm_tlb_flush_vmid_ipa) bx lr ENDPROC(__kvm_tlb_flush_vmid_ipa) +/** + * void __kvm_tlb_flush_vmid(struct kvm *kvm) - Flush per-VMID TLBs + * + * Reuses __kvm_tlb_flush_vmid_ipa() for ARMv7, without passing address + * parameter + */ + +ENTRY(__kvm_tlb_flush_vmid) + b __kvm_tlb_flush_vmid_ipa +ENDPROC(__kvm_tlb_flush_vmid) + + /******************************************************************** * Flush TLBs and instruction caches of all CPUs inside the inner-shareable * domain, for all VMIDs