From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62580C433ED for ; Fri, 2 Apr 2021 15:58:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 391F36115A for ; Fri, 2 Apr 2021 15:58:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236529AbhDBP6g (ORCPT ); Fri, 2 Apr 2021 11:58:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236339AbhDBP6P (ORCPT ); Fri, 2 Apr 2021 11:58:15 -0400 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A91AC0613E6; Fri, 2 Apr 2021 08:58:14 -0700 (PDT) Received: by mail-wr1-x431.google.com with SMTP id b9so5098510wrt.8; Fri, 02 Apr 2021 08:58:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=43FpCxX0SVzfOugEOQk73VHo0lcUDXRR1mTG2VJrV24=; b=O71U8IkgAOkcDTf0HexDGvvYgfmnzBNBLucYyXbL6gsSmc0cC6b+ibn0v+g83j0Sq+ 0o2Ds99FytvE/8nT4kZrDGQkHOwd7HfvVbi+vy77EBZvVwFDEIQq7gDhzdSMQmtI8WEJ WsTlunnqyNvUZ2dE8XIH4sbIC/jLB98ohUvPVfLztONbgMvOsWDfLKmhPkIR4Ag32vU8 wPYBJHgaQkHo/TNTxN1jaggCnHiOOAvS0PryD2YaMCTZ9yGQ3DPjF+swLv2QAbxXXylt 7TqqVYg9hTyT5/scedmBrdYTdAZEW/UHXIkLvlMpWQpnwu/geL47ZHFxsOnrBtXWuKkF cErw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=43FpCxX0SVzfOugEOQk73VHo0lcUDXRR1mTG2VJrV24=; b=qnTL/pps5rwin9Gmkfw5vdnvUAClymtOh1crxFZJ+nxMKqQBflfKj879thI2/SVDtu /hEvBFTjSx7aNYA6ZOTEJeTOxy5OoNLLBTiCOmaX2ocPVFjz40IIsqKK1CglKhcLQGwz Bx0yi4vH85b7lEKIvuVEpfAmEbi9ijn0ov/FYtA1+/nWBtIMTyzPxe//2UsSo8naZmZM l/lR62Wom8d4dD7XVmnHn2kYTbekdFhBZEzpjijs0mCyn1eZm5SbUplHsf896Io09Zt0 SGaafyfAJhRGEec8HpUHL6ApzI77LG9eWGV+edKvV+GcV5pdZ9ZkGjGyaenQIjRrnMAP 5p/g== X-Gm-Message-State: AOAM531gVLfjdsGh1g7kJxEffQ6IQl5Dn0ojLcX9ccreWVTdA0rsr7BE 4N/OFkP79vd5jLmjAyiysyZHwt1Ppn4= X-Google-Smtp-Source: ABdhPJy40VzvN06rqq1Rze1hJe0FWvMeBslGqDWCgLdpW2+frdxEDgqtczCiJqYQQTlwLtqPwppNpQ== X-Received: by 2002:a5d:42ca:: with SMTP id t10mr15796822wrr.274.1617379092877; Fri, 02 Apr 2021 08:58:12 -0700 (PDT) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id w11sm2293625wmb.35.2021.04.02.08.58.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Apr 2021 08:58:12 -0700 (PDT) Sender: Paolo Bonzini From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: chenhuacai@kernel.org, aleksandar.qemu.devel@gmail.com, seanjc@google.com, linux-mips@vger.kernel.org Subject: [PATCH 4/4] KVM: MIPS: defer flush to generic MMU notifier code Date: Fri, 2 Apr 2021 17:58:07 +0200 Message-Id: <20210402155807.49976-5-pbonzini@redhat.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210402155807.49976-1-pbonzini@redhat.com> References: <20210402155807.49976-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return 1 from kvm_unmap_hva_range and kvm_set_spte_hva if a flush is needed, so that the generic code can coalesce the flushes. Signed-off-by: Paolo Bonzini --- arch/mips/kvm/mmu.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index 2cedf908d744..a3a49b009dc4 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -489,9 +489,7 @@ static int kvm_unmap_hva_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end, int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end, unsigned flags) { - handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, NULL); - kvm_flush_remote_tlbs(kvm); - return 0; + return handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, NULL); } static int kvm_set_spte_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end, @@ -528,12 +526,7 @@ static int kvm_set_spte_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end, int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) { unsigned long end = hva + PAGE_SIZE; - int ret; - - ret = handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, &pte); - if (ret) - kvm_flush_remote_tlbs(kvm); - return 0; + return handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, &pte); } static int kvm_age_hva_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end, -- 2.30.1