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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B8D3BCFC5F6 for ; Thu, 10 Oct 2024 18:57:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XLdDohDDFqGFXAGyTu3u+ZvGCh81J1T2J9zwRSkoLRw=; b=XXD6Zo0cScOCsY yT60xleSam62u41QigaSlPbr+foorhHgHq6I4Vcbttfwx1eHST/aFGJXB3y3SYbRU79/qrSYMEE8n MaOjToXHwrepNFfolGZEjFYUHgoWlXnpR3Tw3hAUXxQPG8V9FrDs5OXt/b/Ri28Ca2A9sSb6nnMNF NeldXwJUSup63vuW3kg+YzZ0Xvz81vvcQWB0UQWEA+cQKbRVnn3HtEK/bYuwSmGPvb6v1Wd9Aye/F tN5krKdVmYwZVryoLzme8TustIrulmJwR6aLPwxmfETtFVTSHm8WTeFHLhshXaEe3mmpiRxNlSaCa aVJH56VeQ9qkfGqKtHrg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1syyM7-0000000E0qJ-2f2P; Thu, 10 Oct 2024 18:57:47 +0000 Received: from mail-yb1-xb49.google.com ([2607:f8b0:4864:20::b49]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1syxrH-0000000DqP1-0KZ8 for linux-riscv@lists.infradead.org; Thu, 10 Oct 2024 18:25:56 +0000 Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-e02fff66a83so1965993276.0 for ; Thu, 10 Oct 2024 11:25:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1728584753; x=1729189553; darn=lists.infradead.org; h=content-transfer-encoding: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=nXVCtJlFVF227JmXan6PsTRYgw7//koA3Av9lMmMw70=; b=ttCXfoQrTUVfgH8jwR8KWzplwegscq+j8FDqssv2oxhDJRt4EEVBLhTF1+GaGNqIQl XvdFls0Il6zSW+CKvmB9tAofDO1Ill0yzaCXijICpQhEHTeRAWZnMb43UbmWmuM0vN2I 9sZWepWrJ+nULqgWGU5XrQ46pWviuTndQVuXa3ndAOlS+s/JEa0YjwCfRXMzAf4tzQHd XqRowaXrWrVUe04WhSnbBr0Qc8BnZMsF8YrEnrHvYviJJkJkNbvK6sB89qGjQdFD7cL9 5GOd+zNYLbrYew8HML/Cnf9qrivbBDIL1+HW1EqU4gsgl4lwPm3tZ7yh7tQzleuhQo16 DdYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728584753; x=1729189553; h=content-transfer-encoding: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=nXVCtJlFVF227JmXan6PsTRYgw7//koA3Av9lMmMw70=; b=EY8D3yTM7zxeZvW2pfvmJlLn4RaIQ9EyUe1E8Z3TMho7TiUltgA9xDNXgEfjGm9WY9 XEWvsu8WlZMadm2AaJrZ3Kt7twnrNcPtYlPELM8pjVAA5uE01XJGYF1iWoNYlfyS9JJx 4RIwAXkyd3OWTllVxebEvIY8Zpa6TPhhdqq+PBZqg17IZoHNtd5Bu01QiJ8PJDroOSIu HyIglHtjc3ZtqlSg7W9JjE4w/PDd64kaaGTQGrYkAGf+gaIxpWHaXLBObCBktVcwl3WE vufR4snUbTUI5yeBUwecjJwJLjs98iZcOuyC2rKdbbw7QBuWpkJJjvQwk7O4kXqh9oRD Fghw== X-Forwarded-Encrypted: i=1; AJvYcCUXjMERsMV+WZLCYbczSHfp6/fcP4o2KUg5d2aT/XO9psnI4IEbmglvVKen8WNkLgZQ719RVlCRIdljDA==@lists.infradead.org X-Gm-Message-State: AOJu0Yz/kqm3pedx/TC9RkDiiCR1VoU7ysXmoEAtxIVxj71qgHjNdn/z 0tz/L1UWiWDj9uJkt9jD2A4blm2q1yatWqt/fBDWE11pBE241mum8NihgldY82POJZ6dyg62g5k yfg== X-Google-Smtp-Source: AGHT+IFqzRS1xOg2oJDncuDOdOtR7gITdwbfvBFuJ4xWEWgDQEplutdiZUKmbH0mIVak18Oaak6LM032atM= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:9d:3983:ac13:c240]) (user=seanjc job=sendgmr) by 2002:a25:b205:0:b0:e25:17cb:352e with SMTP id 3f1490d57ef6-e28fe43f3f5mr4095276.9.1728584753336; Thu, 10 Oct 2024 11:25:53 -0700 (PDT) Date: Thu, 10 Oct 2024 11:23:31 -0700 In-Reply-To: <20241010182427.1434605-1-seanjc@google.com> Mime-Version: 1.0 References: <20241010182427.1434605-1-seanjc@google.com> X-Mailer: git-send-email 2.47.0.rc1.288.g06298d1525-goog Message-ID: <20241010182427.1434605-30-seanjc@google.com> Subject: [PATCH v13 29/85] KVM: pfncache: Precisely track refcounted pages 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, "=?UTF-8?q?Alex=20Benn=C3=A9e?=" , Yan Zhao , David Matlack , David Stevens , Andrew Jones X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241010_112555_434415_A8B3C65C X-CRM114-Status: GOOD ( 10.67 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org VHJhY2sgcmVmY291bnRlZCBzdHJ1Y3QgcGFnZSBtZW1vcnkgdXNpbmcga3ZtX2ZvbGxvd19wZm4u cmVmY291bnRlZF9wYWdlCmluc3RlYWQgb2YgcmVseWluZyBvbiBrdm1fcmVsZWFzZV9wZm5fY2xl YW4oKSB0byBjb3JyZWN0bHkgZGV0ZWN0IHRoYXQgdGhlCnBmbiBpcyBhc3NvY2lhdGVkIHdpdGgg YSBzdHJ1Y3QgcGFnZS4KClRlc3RlZC1ieTogQWxleCBCZW5uw6llIDxhbGV4LmJlbm5lZUBsaW5h cm8ub3JnPgpTaWduZWQtb2ZmLWJ5OiBTZWFuIENocmlzdG9waGVyc29uIDxzZWFuamNAZ29vZ2xl LmNvbT4KLS0tCiB2aXJ0L2t2bS9wZm5jYWNoZS5jIHwgMTEgKysrKysrKy0tLS0KIDEgZmlsZSBj aGFuZ2VkLCA3IGluc2VydGlvbnMoKyksIDQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvdmly dC9rdm0vcGZuY2FjaGUuYyBiL3ZpcnQva3ZtL3BmbmNhY2hlLmMKaW5kZXggMDY3ZGFmOWFkNmVm Li43MjhkMmMxYjQ4OGEgMTAwNjQ0Ci0tLSBhL3ZpcnQva3ZtL3BmbmNhY2hlLmMKKysrIGIvdmly dC9rdm0vcGZuY2FjaGUuYwpAQCAtMTU5LDExICsxNTksMTQgQEAgc3RhdGljIGt2bV9wZm5fdCBo dmFfdG9fcGZuX3JldHJ5KHN0cnVjdCBnZm5fdG9fcGZuX2NhY2hlICpncGMpCiAJa3ZtX3Bmbl90 IG5ld19wZm4gPSBLVk1fUEZOX0VSUl9GQVVMVDsKIAl2b2lkICpuZXdfa2h2YSA9IE5VTEw7CiAJ dW5zaWduZWQgbG9uZyBtbXVfc2VxOworCXN0cnVjdCBwYWdlICpwYWdlOworCiAJc3RydWN0IGt2 bV9mb2xsb3dfcGZuIGtmcCA9IHsKIAkJLnNsb3QgPSBncGMtPm1lbXNsb3QsCiAJCS5nZm4gPSBn cGFfdG9fZ2ZuKGdwYy0+Z3BhKSwKIAkJLmZsYWdzID0gRk9MTF9XUklURSwKIAkJLmh2YSA9IGdw Yy0+dWh2YSwKKwkJLnJlZmNvdW50ZWRfcGFnZSA9ICZwYWdlLAogCX07CiAKIAlsb2NrZGVwX2Fz c2VydF9oZWxkKCZncGMtPnJlZnJlc2hfbG9jayk7CkBAIC0xOTgsNyArMjAxLDcgQEAgc3RhdGlj IGt2bV9wZm5fdCBodmFfdG9fcGZuX3JldHJ5KHN0cnVjdCBnZm5fdG9fcGZuX2NhY2hlICpncGMp CiAJCQlpZiAobmV3X2todmEgIT0gb2xkX2todmEpCiAJCQkJZ3BjX3VubWFwKG5ld19wZm4sIG5l d19raHZhKTsKIAotCQkJa3ZtX3JlbGVhc2VfcGZuX2NsZWFuKG5ld19wZm4pOworCQkJa3ZtX3Jl bGVhc2VfcGFnZV91bnVzZWQocGFnZSk7CiAKIAkJCWNvbmRfcmVzY2hlZCgpOwogCQl9CkBAIC0y MTgsNyArMjIxLDcgQEAgc3RhdGljIGt2bV9wZm5fdCBodmFfdG9fcGZuX3JldHJ5KHN0cnVjdCBn Zm5fdG9fcGZuX2NhY2hlICpncGMpCiAJCQluZXdfa2h2YSA9IGdwY19tYXAobmV3X3Bmbik7CiAK IAkJaWYgKCFuZXdfa2h2YSkgewotCQkJa3ZtX3JlbGVhc2VfcGZuX2NsZWFuKG5ld19wZm4pOwor CQkJa3ZtX3JlbGVhc2VfcGFnZV91bnVzZWQocGFnZSk7CiAJCQlnb3RvIG91dF9lcnJvcjsKIAkJ fQogCkBAIC0yMzYsMTEgKzIzOSwxMSBAQCBzdGF0aWMga3ZtX3Bmbl90IGh2YV90b19wZm5fcmV0 cnkoc3RydWN0IGdmbl90b19wZm5fY2FjaGUgKmdwYykKIAlncGMtPmtodmEgPSBuZXdfa2h2YSAr IG9mZnNldF9pbl9wYWdlKGdwYy0+dWh2YSk7CiAKIAkvKgotCSAqIFB1dCB0aGUgcmVmZXJlbmNl IHRvIHRoZSBfbmV3XyBwZm4uICBUaGUgcGZuIGlzIG5vdyB0cmFja2VkIGJ5IHRoZQorCSAqIFB1 dCB0aGUgcmVmZXJlbmNlIHRvIHRoZSBfbmV3XyBwYWdlLiAgVGhlIHBhZ2UgaXMgbm93IHRyYWNr ZWQgYnkgdGhlCiAJICogY2FjaGUgYW5kIGNhbiBiZSBzYWZlbHkgbWlncmF0ZWQsIHN3YXBwZWQs IGV0Yy4uLiBhcyB0aGUgY2FjaGUgd2lsbAogCSAqIGludmFsaWRhdGUgYW55IG1hcHBpbmdzIGlu IHJlc3BvbnNlIHRvIHJlbGV2YW50IG1tdV9ub3RpZmllciBldmVudHMuCiAJICovCi0Ja3ZtX3Jl bGVhc2VfcGZuX2NsZWFuKG5ld19wZm4pOworCWt2bV9yZWxlYXNlX3BhZ2VfY2xlYW4ocGFnZSk7 CiAKIAlyZXR1cm4gMDsKIAotLSAKMi40Ny4wLnJjMS4yODguZzA2Mjk4ZDE1MjUtZ29vZwoKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2 IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcmlzY3YK