Message ID | 20240726235234.228822-54-seanjc@google.com (mailing list archive) |
---|---|
State | Handled Elsewhere, archived |
Headers | show
Return-Path: <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20230601 header.b=EvonMnm6; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WW59911Zzz1yY5 for <incoming@patchwork.ozlabs.org>; Sat, 27 Jul 2024 10:29:33 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20230601 header.b=EvonMnm6; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4WW59900JNz30T3 for <incoming@patchwork.ozlabs.org>; Sat, 27 Jul 2024 10:29:33 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20230601 header.b=EvonMnm6; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=flex--seanjc.bounces.google.com (client-ip=2607:f8b0:4864:20::44a; helo=mail-pf1-x44a.google.com; envelope-from=3mjekzgykdg0dplyunrzzrwp.nzxwtyfiaan-opgwtded.zkwlmd.zcr@flex--seanjc.bounces.google.com; receiver=lists.ozlabs.org) Received: from mail-pf1-x44a.google.com (mail-pf1-x44a.google.com [IPv6:2607:f8b0:4864:20::44a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WW4Nh4BM3z3dXL for <linuxppc-dev@lists.ozlabs.org>; Sat, 27 Jul 2024 09:54:28 +1000 (AEST) Received: by mail-pf1-x44a.google.com with SMTP id d2e1a72fcca58-70e93462241so1461935b3a.3 for <linuxppc-dev@lists.ozlabs.org>; Fri, 26 Jul 2024 16:54:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1722038067; x=1722642867; darn=lists.ozlabs.org; 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=zSr/S7cQW+jg6+5Yur5d69GSxQ0D+3E/XB18qDPP3eA=; b=EvonMnm6te3giLSAz1WFu1vN/fWweaf/9Mrr60hZXpfeKKKXkYRI+QrEKTtuAkdfg5 ajKEgBIX7SvDtQFUGeYpNyKvXlaJjo8Ksv39Y9vnIotgBvkh0DMOm4SfuZWj4qUreS8V Rxpdq2ZJOTqoN0kXDHNEJRbKc81iyzqQY50Xrl7e2jTQ+qyGkbezvj2Ph2fv9mePlpQq QI+sx7N3vcjpt5erbZt9WSJMsh3SC5k4ctWnfSPKJn+jNi3nufU9NweZLvcv+GWbG3Di o8npEZYk/thmOCx8YMsTY9BBMujo0Zqv/OwqtnASU2mlyM24Jiw3UafElT+/nvgWg6qx qFpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722038067; x=1722642867; 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=zSr/S7cQW+jg6+5Yur5d69GSxQ0D+3E/XB18qDPP3eA=; b=CsJWPkuQsja5wopTesPTHMfAuY1IkhcCC8tTSp9iAXjUYVgHDYq0gxJUivD4sLC6Eu ndCsRciZqFIl2GVCIaqVzbdbtA2Iv/1P26T86bgkddyQd5NowLX9JMiMzW2zJS8500Q1 5pk4LpXkJ6nt9fOvvDN3RdZIdlMt+UTp9d5yI0UHA2Fp1MNpIigdUdkrOKXuhXgn1uYJ 7VitfkmyGymz7FHNlLmyt35IdopQzujqYjgfk3mk4+qvN3rBJM+cKJwEyaiUJ2P1UayQ vuwBbRHbaRxw1M670jTKxxvdsWOEChlHdsYZTNjdGZDGruMD9R1CtQzDAW3tYqCBTm7c bkxw== X-Forwarded-Encrypted: i=1; AJvYcCWK1TLSNi8TWCuZknoYlFe1RChYOD+wP142pmr7wUDJje2EjIMTZJ/6n4QduFO40UX/PDlNDqovWntagglXJDzGQs7gBBTBJ2Ogw3NxqA== X-Gm-Message-State: AOJu0YxxJoKaPZ/cdkkV4+A0Ff3Ef03WDAY0egiq4NCX2vAm11ohavWu aNvpR2mB5BTef7DLR65hQVGvt2YlYJ6YMLFvI8TjREFy4i9sbKBUjPv/Qas+UxPEFKHUnLivWtO YxA== X-Google-Smtp-Source: AGHT+IEvvOLEi17q5BnKGFU80vyNCkxL+K4ME2VW/zA0UgmW3Jn60esm+Gg/1wQhRB2++SmF9ZjJ4yJ/TXU= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:238d:b0:70e:98e2:fdae with SMTP id d2e1a72fcca58-70ecee6db73mr19809b3a.0.1722038066705; Fri, 26 Jul 2024 16:54:26 -0700 (PDT) Date: Fri, 26 Jul 2024 16:52:02 -0700 In-Reply-To: <20240726235234.228822-1-seanjc@google.com> 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: <20240726235234.228822-54-seanjc@google.com> Subject: [PATCH v12 53/84] KVM: PPC: e500: Use __kvm_faultin_pfn() to handle page faults From: Sean Christopherson <seanjc@google.com> To: Paolo Bonzini <pbonzini@redhat.com>, Marc Zyngier <maz@kernel.org>, Oliver Upton <oliver.upton@linux.dev>, Tianrui Zhao <zhaotianrui@loongson.cn>, Bibo Mao <maobibo@loongson.cn>, Huacai Chen <chenhuacai@kernel.org>, Michael Ellerman <mpe@ellerman.id.au>, Anup Patel <anup@brainfault.org>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Christian Borntraeger <borntraeger@linux.ibm.com>, Janosch Frank <frankja@linux.ibm.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, Sean Christopherson <seanjc@google.com> Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Reply-To: Sean Christopherson <seanjc@google.com> Cc: kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, David Matlack <dmatlack@google.com>, David Stevens <stevensd@chromium.org>, loongarch@lists.linux.dev, kvmarm@lists.linux.dev, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
KVM: Stop grabbing references to PFNMAP'd pages
|
expand
|
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 334dd96f8081..e5a145b578a4 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -322,6 +322,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, { struct kvm_memory_slot *slot; unsigned long pfn = 0; /* silence GCC warning */ + struct page *page = NULL; unsigned long hva; int pfnmap = 0; int tsize = BOOK3E_PAGESZ_4K; @@ -443,7 +444,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, if (likely(!pfnmap)) { tsize_pages = 1UL << (tsize + 10 - PAGE_SHIFT); - pfn = gfn_to_pfn_memslot(slot, gfn); + pfn = __kvm_faultin_pfn(slot, gfn, FOLL_WRITE, NULL, &page); if (is_error_noslot_pfn(pfn)) { if (printk_ratelimit()) pr_err("%s: real page not found for gfn %lx\n", @@ -488,8 +489,6 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, } } writable = kvmppc_e500_ref_setup(ref, gtlbe, pfn, wimg); - if (writable) - kvm_set_pfn_dirty(pfn); kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize, ref, gvaddr, stlbe); @@ -498,8 +497,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, kvmppc_mmu_flush_icache(pfn); out: - /* Drop refcount on page, so that mmu notifiers can clear it */ - kvm_release_pfn_clean(pfn); + kvm_release_faultin_page(kvm, page, !!ret, writable); spin_unlock(&kvm->mmu_lock); return ret; }
Convert PPC e500 to use __kvm_faultin_pfn()+kvm_release_faultin_page(), and continue the inexorable march towards the demise of kvm_pfn_to_refcounted_page(). Signed-off-by: Sean Christopherson <seanjc@google.com> --- arch/powerpc/kvm/e500_mmu_host.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)