From patchwork Fri Nov 7 00:40:45 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Smarduch X-Patchwork-Id: 5249011 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 723A8C11AC for ; Fri, 7 Nov 2014 00:46:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8CBD82011D for ; Fri, 7 Nov 2014 00:46:46 +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 AA4EB2010C for ; Fri, 7 Nov 2014 00:46:45 +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 1XmXfL-0004n1-2q; Fri, 07 Nov 2014 00:44:39 +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 1XmXfH-0004aR-Um for linux-arm-kernel@lists.infradead.org; Fri, 07 Nov 2014 00:44:36 +0000 Received: from uscpsbgex4.samsung.com (u125.gpu85.samsung.co.kr [203.254.195.125]) 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 <0NEN0037Y8PUFQ00@mailout2.w2.samsung.com> for linux-arm-kernel@lists.infradead.org; Thu, 06 Nov 2014 19:44:18 -0500 (EST) X-AuditID: cbfec37d-b7f3b6d000005695-6d-545c15e2c2c1 Received: from usmmp1.samsung.com ( [203.254.195.77]) by uscpsbgex4.samsung.com (USCPEXMTA) with SMTP id 9C.15.22165.2E51C545; Thu, 06 Nov 2014 19:44:18 -0500 (EST) Received: from sisasmtp.sisa.samsung.com ([105.144.21.116]) by usmmp1.samsung.com (Oracle Communications Messaging Server 7u4-27.01(7.0.4.27.0) 64bit (built Aug 30 2012)) with ESMTP id <0NEN00KMS8PUH880@usmmp1.samsung.com>; Thu, 06 Nov 2014 19:44:18 -0500 (EST) Received: from mjsmard-530U3C-530U4C-532U3C.sisa.samsung.com (105.144.129.79) by SISAEX02SJ.sisa.samsung.com (105.144.21.116) with Microsoft SMTP Server (TLS) id 14.3.123.3; Thu, 06 Nov 2014 16:44:17 -0800 From: Mario Smarduch To: pbonzini@redhat.com, james.hogan@imgtec.com, christoffer.dall@linaro.org, agraf@suse.de, marc.zyngier@arm.com, cornelia.huck@de.ibm.com, borntraeger@de.ibm.com, catalin.marinas@arm.com Subject: [PATCH v13 4/7] arm: KVM: Add ARMv7 API to flush TLBs Date: Thu, 06 Nov 2014 16:40:45 -0800 Message-id: <1415320848-13813-5-git-send-email-m.smarduch@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1415320848-13813-1-git-send-email-m.smarduch@samsung.com> References: <1415320848-13813-1-git-send-email-m.smarduch@samsung.com> MIME-version: 1.0 X-Originating-IP: [105.144.129.79] X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkkeLIzCtJLcpLzFFi42I5/e+wr+4j0ZgQg7b5ahYnrvxjtJi+YjuL xftlPYwWL14DufObGxkt3s17wWzR/ayZ0eLNJ22LOVMLLT6eOs5usenxNVaLv3f+sVns3/aP 1WLOmQcsFpPebGNy4PdYM28No8fBR4fYPHp2nmH0uHNtD5vH+U1rmD02L6n3eL/vKpvH5tPV Hp83yQVwRnHZpKTmZJalFunbJXBlPJnUzlZwXbTixLmFTA2MS4S6GDk5JARMJM59u8EEYYtJ XLi3nq2LkYtDSGAZo8TlL6/YQRJCAr1MEgt3+0AkLjJK/Fo8DSzBJqArsf/eRnaQhIjAAUaJ Ext/MYE4zAJvGSV2nPwDNldYwE5iw/9LbCA2i4CqxLT5Wxm7GDk4eAXcJPa85gUxJQQUJOZM sgGp4BRwl9i8YwczxGI3ibsPf7CC2LwCghI/Jt9jASlnFpCQeP5ZCaJEVWLbzeeMEA8oSUw7 fJV9AqPQLCQdsxA6FjAyrWIUKy1OLihOSk+tMNErTswtLs1L10vOz93ECIm22h2M97/aHGIU 4GBU4uG9wRsTIsSaWFZcmXuIUYKDWUmE14YdKMSbklhZlVqUH19UmpNafIiRiYNTqoHxgJcm Z72TeYOKxFfxIxeMrygVrSliNjnJ+/niNbmN1uEfLAU1Y5h2Rsw4bHYyatmPE0rdrQFHc38b zJi0+UxZyMm6dOa35/KKlJICyoqYtm3/kjDT2GbOBHnu0yf0hRQWr+ctZlrwlztvl9Mj01bO rg4B6ewDs/sqjhXFT7ifk2H62XST6molluKMREMt5qLiRABtISVClAIAAA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141106_164436_076191_A64E5717 X-CRM114-Status: UNSURE ( 8.07 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.6 (-----) Cc: peter.maydell@linaro.org, kvm@vger.kernel.org, steve.capper@arm.com, kvm-ia64@vger.kernel.org, kvm-ppc@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Mario Smarduch 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=-2.5 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. Acked-by: Christoffer Dall Signed-off-by: Mario Smarduch Acked-by: Marc Zyngier --- 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 | 11 +++++++++++ 4 files changed, 25 insertions(+) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 3a67bec..25410b2 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -96,6 +96,7 @@ 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 6dfb404..fad598c 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_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 466bd29..a099df4 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -23,6 +23,7 @@ config KVM select HAVE_KVM_CPU_RELAX_INTERCEPT select KVM_MMIO select KVM_ARM_HOST + select HAVE_KVM_ARCH_TLB_FLUSH_ALL depends on ARM_VIRT_EXT && ARM_LPAE ---help--- Support hosting virtualized guest machines. You will also diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 01dcb0e..79caf79 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -66,6 +66,17 @@ 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