From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3EEA118D4B3 for ; Fri, 26 Jul 2024 23:54:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722038098; cv=none; b=XKDPf6HPQcMS5o9j/EOxbKcU/FnNWVTdqr73bv1Tas8X/F2ACrM5D9OTC4L9n5uq6HqBs0ZVzT+o/0tb+AYJhuWXAIY+HEPAf/PazL6SO7gl6UJNMQrCVeCo1KrlWf8PbGBeW5MjMQJH0jdPkn4ARCWJND2pUgfcKzEWcXrL0l4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722038098; c=relaxed/simple; bh=J5mfIOqDdF2lEfMBx8mMJA3dTUdwpj862NVDKPV0UK0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=XPlYqJ6LtOC361fF0YrwjGkien4kgcA63ftrNDKC6QnegrvsMcXGVWytQ/vzPlRjmLymg+ZL5OC+ae0Cf9Meui+rhmboXkgqDgcxM7NCncwGVPqAxvKP/1gDppydC34+ishwOawsQUDkOIl5L88UN5ZmYxbIch27HLxxepbIGPQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=1Kpfrq80; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="1Kpfrq80" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-70d14fc3317so1434783b3a.1 for ; Fri, 26 Jul 2024 16:54:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1722038097; x=1722642897; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=T3Tq4gPotkzFIpSFFawcUtCGWBlTwHcibbE0IfTBXb4=; b=1Kpfrq80WRWALtG0+QzScDFGvttioOToA3t3uYHQerPN91jdTKQrr0FFSSS9YWNpkW o5+Sm8r7xhIdTq+W3rwoIIcsVH1zIprKB121rIEz41I64W+xl0kHXv1MMaQ3oZVsC5vM Se8MT+A0ZhjB7TG8wiDFzGd1hDuAIEALrJn/Uq6hxpYUdf4ICpruwjrZ86MlZ0U4JU9C 2R2NQlwjd35U9tfWP8/9xWTI1UHEyTb2LMLehJnsqAOZVTqPCXuU1VTAwEVY5FqRGA37 WcJWRcvt372JJPD1R7yTt3wNlZO2Fw+JhWtn3jDZLprFoKra1M8Z6mRccMD/v+GkIKVj y0+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722038097; x=1722642897; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=T3Tq4gPotkzFIpSFFawcUtCGWBlTwHcibbE0IfTBXb4=; b=OE7WgcnhcgSYIJd7ufRYYLzOLOA8cORIFGhXRKc1zfVOQPNxOkbFwFZG9RpmNNuK/E TRQVrOEjgrdmtKtA3LLWg2MAEbO0O689PwI2Zu6eYQ1r0H7H0HbBc/XCUShSU0YVrurA OnZCYpPPWA+A2gGdwJmfbdiC/RfLL+vybfZSoyGV81PR4St0gFfkTNspx0sTvkFOLvp2 IecHySxCXHrUwtFToLQJSunPp09C8yY+CTcPhqCOU1EAj3c48u6B+bOfz2cXx9Io0WK3 Xrtnt+t+cxm913D2eg+dGG5wg7YncNkxiZUr56yfBQHKAb+lJwQKmeC4ZcUI+VZFn4Rc RNYA== X-Forwarded-Encrypted: i=1; AJvYcCVVwEHPAkxGCJccAdsziIX1/pZUqVGE04Y2/EAQHMKXnhP4LJpqJ753TdNo2XB9nzRDxUFuSTWTirwg2+jE6bCB2BLALiiy X-Gm-Message-State: AOJu0YxPigPLIXhuwQamceaK5JL1ArwjJNyn2/ULQzKpqD1PrJkxt2I2 J7eQgWei+xBkp+BWQrHGSiqZoqWzB+r+s5e6fDx50j9/cj/NOp4meiVO1q63xtsss7xnTwozOLz CXg== X-Google-Smtp-Source: AGHT+IExCpdv69na3gU93uhAEfGJO0DgmCPrxQU8TmhxNm9ObFOOTchJQQycuTaWmcpCMOvBszJjylffDDY= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:2d99:b0:70d:2b2a:60f7 with SMTP id d2e1a72fcca58-70ece928763mr9066b3a.0.1722038096309; Fri, 26 Jul 2024 16:54:56 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 26 Jul 2024 16:52:16 -0700 In-Reply-To: <20240726235234.228822-1-seanjc@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240726235234.228822-1-seanjc@google.com> X-Mailer: git-send-email 2.46.0.rc1.232.g9752f9e123-goog Message-ID: <20240726235234.228822-68-seanjc@google.com> Subject: [PATCH v12 67/84] KVM: LoongArch: Use kvm_faultin_pfn() to map pfns into the guest From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, David Matlack , David Stevens Content-Type: text/plain; charset="UTF-8" Convert LoongArch to kvm_faultin_pfn()+kvm_release_faultin_page(), which are new APIs to consolidate arch code and provide consistent behavior across all KVM architectures. Signed-off-by: Sean Christopherson --- arch/loongarch/kvm/mmu.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/arch/loongarch/kvm/mmu.c b/arch/loongarch/kvm/mmu.c index 230cafa178d7..83e4376deabb 100644 --- a/arch/loongarch/kvm/mmu.c +++ b/arch/loongarch/kvm/mmu.c @@ -780,6 +780,7 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write) struct kvm *kvm = vcpu->kvm; struct kvm_memory_slot *memslot; struct kvm_mmu_memory_cache *memcache = &vcpu->arch.mmu_page_cache; + struct page *page; /* Try the fast path to handle old / clean pages */ srcu_idx = srcu_read_lock(&kvm->srcu); @@ -807,7 +808,7 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write) mmu_seq = kvm->mmu_invalidate_seq; /* * Ensure the read of mmu_invalidate_seq isn't reordered with PTE reads in - * gfn_to_pfn_prot() (which calls get_user_pages()), so that we don't + * kvm_faultin_pfn() (which calls get_user_pages()), so that we don't * risk the page we get a reference to getting unmapped before we have a * chance to grab the mmu_lock without mmu_invalidate_retry() noticing. * @@ -819,7 +820,7 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write) smp_rmb(); /* Slow path - ask KVM core whether we can access this GPA */ - pfn = gfn_to_pfn_prot(kvm, gfn, write, &writeable); + pfn = kvm_faultin_pfn(vcpu, gfn, write, &writeable, &page); if (is_error_noslot_pfn(pfn)) { err = -EFAULT; goto out; @@ -831,10 +832,10 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write) /* * This can happen when mappings are changed asynchronously, but * also synchronously if a COW is triggered by - * gfn_to_pfn_prot(). + * kvm_faultin_pfn(). */ spin_unlock(&kvm->mmu_lock); - kvm_release_pfn_clean(pfn); + kvm_release_page_unused(page); if (retry_no > 100) { retry_no = 0; schedule(); @@ -900,10 +901,7 @@ static int kvm_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, bool write) ++kvm->stat.pages; kvm_set_pte(ptep, new_pte); - if (writeable) - kvm_set_pfn_dirty(pfn); - kvm_release_pfn_clean(pfn); - + kvm_release_faultin_page(kvm, page, false, writeable); spin_unlock(&kvm->mmu_lock); if (prot_bits & _PAGE_DIRTY) -- 2.46.0.rc1.232.g9752f9e123-goog