From patchwork Thu Dec 8 19:38:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Matlack X-Patchwork-Id: 13068730 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1169C4332F for ; Thu, 8 Dec 2022 19:40:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230011AbiLHTka (ORCPT ); Thu, 8 Dec 2022 14:40:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229848AbiLHTkL (ORCPT ); Thu, 8 Dec 2022 14:40:11 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD21A1AA0D for ; Thu, 8 Dec 2022 11:39:56 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id t9-20020a5b03c9000000b006cff5077dc9so2553131ybp.3 for ; Thu, 08 Dec 2022 11:39:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=IGXwNDL4QYyEmLxSnzAicnadmof6UqucM+DSeXyfLbg=; b=e2wlSIbIUNSSfaa5cE8nlhbofFQRnDINdERr5/zptolHxRg/aPkZUAkV/kMjTwqvnL VAny0I7JM9mmYwlM19HgFZ4z/Bt+AByLMvJNwn4T4fl0KwFC3zH/PllsEXxvlbxKUkc0 NdMHxpCwQrIPT0+bestZB+Anm+CNeXCBzxYs+7pB5OowuPNVic/k7alXblYXNWUiyNRn 3s7YLdEKTaInLDTRes3bQcWtyjH3N9OVLHAzY6Bg1V5A6pocb3CfBR9ECK9NIDh6py2b FQXi6i4x7GPqtsNYbTReUTLXYmSwdtvZ+/Ai3ANOoadydeN1zSK+lfHKCn5oiJ5BQfNn SJvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=IGXwNDL4QYyEmLxSnzAicnadmof6UqucM+DSeXyfLbg=; b=aqvmGE4t55mfIgF8IVfZYFiooI0c9oRoJjzZWupSxvwYB3JI/vFad2QIkMdpCH6HGZ zNG2fH5OLwQBTS8d2uWT+e4LyevPgCxKAUzxCDn3wvAUVFGqfmOv7Vka8MAWNGUEMkdr b/krjcXHxYI/fEtUHLD2HYVBnPlC9ASFY40QWQmAH518Zt0TnXCxz8cLY1z9MsADEmfB RQGesxDdhuU/TXjPKewO3AhxAvrwNFraS4Ra0AouqiaEj498ma1tIJVx+hLUntG6wFuq YHWDVJPJc47Jxk/tOZAlB9z4bKrxHbLAHUauuR/BAP2oOyfAh83LYzwZPrJFgHQhdL52 ZmJQ== X-Gm-Message-State: ANoB5pm2Wk3axZ00/NTutAWKZM/xMg+Fhn8bIySfGyKzWhA3VXJ/u/YL XSExm/CUlBl+N/vFM8Uw9hAObJHwQc9C8Q== X-Google-Smtp-Source: AA0mqf7NcSr4AIKU//qVuXa9coH1f9XMOTx1jz8qMU/k8ctWA7f2fWXafNUay3Wq3KgA3j2vNzHhSJ2naqJ0zg== X-Received: from dmatlack-n2d-128.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:1309]) (user=dmatlack job=sendgmr) by 2002:a81:6309:0:b0:3b0:773b:2b8f with SMTP id x9-20020a816309000000b003b0773b2b8fmr1555613ywb.350.1670528395580; Thu, 08 Dec 2022 11:39:55 -0800 (PST) Date: Thu, 8 Dec 2022 11:38:49 -0800 In-Reply-To: <20221208193857.4090582-1-dmatlack@google.com> Mime-Version: 1.0 References: <20221208193857.4090582-1-dmatlack@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221208193857.4090582-30-dmatlack@google.com> Subject: [RFC PATCH 29/37] KVM: x86/mmu: Collapse kvm_flush_remote_tlbs_with_{range,address}() together From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Huacai Chen , Aleksandar Markovic , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Andrew Morton , David Matlack , Anshuman Khandual , Nadav Amit , "Matthew Wilcox (Oracle)" , Vlastimil Babka , "Liam R. Howlett" , Suren Baghdasaryan , Peter Xu , xu xin , Arnd Bergmann , Yu Zhao , Colin Cross , Hugh Dickins , Ben Gardon , Mingwei Zhang , Krish Sadhukhan , Ricardo Koller , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Collapse kvm_flush_remote_tlbs_with_range() and kvm_flush_remote_tlbs_with_address() into a single function. This eliminates some lines of code and a useless NULL check on the range struct. Opportunistically switch from ENOTSUPP to EOPNOTSUPP to make checkpatch happy. Signed-off-by: David Matlack --- arch/x86/kvm/mmu/mmu.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index f01ee01f3509..b7bbabac9127 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -244,27 +244,20 @@ static inline bool kvm_available_flush_tlb_with_range(void) return kvm_x86_ops.tlb_remote_flush_with_range; } -static void kvm_flush_remote_tlbs_with_range(struct kvm *kvm, - struct kvm_tlb_range *range) -{ - int ret = -ENOTSUPP; - - if (range && kvm_x86_ops.tlb_remote_flush_with_range) - ret = static_call(kvm_x86_tlb_remote_flush_with_range)(kvm, range); - - if (ret) - kvm_flush_remote_tlbs(kvm); -} - void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, u64 start_gfn, u64 pages) { struct kvm_tlb_range range; + int ret = -EOPNOTSUPP; range.start_gfn = start_gfn; range.pages = pages; - kvm_flush_remote_tlbs_with_range(kvm, &range); + if (kvm_x86_ops.tlb_remote_flush_with_range) + ret = static_call(kvm_x86_tlb_remote_flush_with_range)(kvm, &range); + + if (ret) + kvm_flush_remote_tlbs(kvm); } static void mark_mmio_spte(struct kvm_vcpu *vcpu, u64 *sptep, u64 gfn,