From patchwork Tue Oct 16 04:01:13 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Mackerras X-Patchwork-Id: 191718 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 5A0F62C00A8 for ; Tue, 16 Oct 2012 15:02:32 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753410Ab2JPECY (ORCPT ); Tue, 16 Oct 2012 00:02:24 -0400 Received: from ozlabs.org ([203.10.76.45]:42269 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751326Ab2JPECP (ORCPT ); Tue, 16 Oct 2012 00:02:15 -0400 Received: by ozlabs.org (Postfix, from userid 1003) id C8DC32C00AC; Tue, 16 Oct 2012 15:02:12 +1100 (EST) Date: Tue, 16 Oct 2012 15:01:13 +1100 From: Paul Mackerras To: Alexander Graf Cc: kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, David Gibson Subject: [PATCH 4/5] KVM: PPC: Book3S HV: Make a HPTE removal function available Message-ID: <20121016040113.GP1218@drongo> References: <20121016035836.GL1218@drongo> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20121016035836.GL1218@drongo> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org This makes a HPTE removal function, kvmppc_do_h_remove(), available outside book3s_hv_rm_mmu.c. This will be used by the HPT writing code. Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/kvm_book3s.h | 3 +++ arch/powerpc/kvm/book3s_hv_rm_mmu.c | 19 +++++++++++++------ 2 files changed, 16 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 199b7fd..4ac1c67 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -160,6 +160,9 @@ extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, long pte_index, unsigned long pteh, unsigned long ptel, pgd_t *pgdir, bool realmode, unsigned long *idx_ret); +extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, + unsigned long pte_index, unsigned long avpn, + unsigned long *hpret); extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long *map); diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index c83c0ca..505548a 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -364,11 +364,10 @@ static inline int try_lock_tlbie(unsigned int *lock) return old == 0; } -long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, - unsigned long pte_index, unsigned long avpn, - unsigned long va) +long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, + unsigned long pte_index, unsigned long avpn, + unsigned long *hpret) { - struct kvm *kvm = vcpu->kvm; unsigned long *hpte; unsigned long v, r, rb; struct revmap_entry *rev; @@ -410,10 +409,18 @@ long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, note_hpte_modification(kvm, rev); unlock_hpte(hpte, 0); - vcpu->arch.gpr[4] = v; - vcpu->arch.gpr[5] = r; + hpret[0] = v; + hpret[1] = r; return H_SUCCESS; } +EXPORT_SYMBOL_GPL(kvmppc_do_h_remove); + +long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, + unsigned long pte_index, unsigned long avpn) +{ + return kvmppc_do_h_remove(vcpu->kvm, flags, pte_index, avpn, + &vcpu->arch.gpr[4]); +} long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu) {