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 4A227C43458 for ; Mon, 6 Jul 2026 18:52:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:Cc:To:From: Subject:Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=t8PDm8oG4+65SlSCHXlAGQHcFz/7pVlJ6WK47/KCblA=; b=RdGJzw4gzEDxLys59IXotxLpc6 cODpv6Z+HHINkImUCQ0FFmxsJxCF1up3AABLVYlmgjSemIX8uNXvNyfRARCwBOg/MH0MHad7K5OJZ z98E3ADDQwh4BJ+cxPQ88ddfCSVokyn7EKmekjUHzMcVZUHtegLp/ZukM6z4oyXZrVTqkE2tl+r8Z A08H210136WOIsiVTBS7Tsq1jWrGvKGnKDSFhiIfyL9uO3lekB+BF6MyFD1DG8jjggFtD+SN4Cgh8 YvzI7oKZ9wCwkJvMAenuLPuhR8VsM6fWata41kSyZOID7ghjiUzki6VcOYOEU6agQz8OJ0UBCOdTv kWgx+wdQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wgnWW-0000000DFZt-24en; Mon, 06 Jul 2026 17:54:28 +0000 Received: from mail-wr1-x44a.google.com ([2a00:1450:4864:20::44a]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wgnWT-0000000DFYA-2oyF for linux-arm-kernel@lists.infradead.org; Mon, 06 Jul 2026 17:54:27 +0000 Received: by mail-wr1-x44a.google.com with SMTP id ffacd0b85a97d-47132f8a98aso1974057f8f.1 for ; Mon, 06 Jul 2026 10:54:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1783360463; x=1783965263; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=t8PDm8oG4+65SlSCHXlAGQHcFz/7pVlJ6WK47/KCblA=; b=ASvkU+V0ivSxGzt1cZ9NpCiMG0hwExZ2Ktxlmo57kmjvofh81CLvdbdpQn8N1wslMH dJCCsdMPXV3ShlO42xZMU2ZX9jwuEVnvhq99EH58+V04z2oh7CV8URS5J2wq1REQk7ih xxrXcn6PqmVn+Jnk6SvOLUi/ALu6nrrDideOAKckFfxJ4b0tsbFSR/wzAGj7yXd2uTKw Km85uPeQngeL1Poe6ZCYOl4HGlx2tsgqwSpcZvXsJJPl61nDppL3JGkh97usX6Ds1H74 y2COOTt8alzF6O1KCMl7nHH9Gqt4WQSdbLAIduqGt8VIG3aWXeUCfnp6M7n9YSFfLisN 5arQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783360463; x=1783965263; 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=t8PDm8oG4+65SlSCHXlAGQHcFz/7pVlJ6WK47/KCblA=; b=B3zlhpoiRfjEHRp+VkqrKdodF36xNPOexJDUydqJcNGxyFLxrZJ4BGH9G9/fnBLr0G f3ylctc0cGhwSiGwkr4sF2OwR5+i2MTyWVBmhvo54ZSpt9Wj4sUO567f5seRrRFRbaR1 L0eljIySIizrqVu4hyDfWIPwT4TdYc0mpcYTvtrVHNYWqGJ32LiGypu9d3xy4UDWfkfT D7ZqJAmlBy/1HZLYUgt3Ly5CxrEYJJ8a+kEocI+PIes23gbYLOO2zkR64ktrX40QGzSU vkUfcIwYQrB/mFr8GSB20lduSDRWMXca2Bno99ctnoELLAZc7r+lVgKi65lneQVa46cK VAoQ== X-Gm-Message-State: AOJu0YyaNiomQLJR+41rA5RUJxXLnXxJh/mWbhIN+6sEmCa4RRsworLt x58GT+9o176G0adh24fIn8kvQOV3MgiiTxqnrj49TNHC6x8YhKsG35KrFR8UCMp4zYAUcn7bxz9 7XVdkVae9qzVtmbeTRqApow== X-Received: from wrsb12.prod.google.com ([2002:a5d:45cc:0:b0:473:1fcb:48a8]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:4e4f:b0:490:b189:212d with SMTP id 5b1f17b1804b1-493df09a140mr16985925e9.33.1783360463046; Mon, 06 Jul 2026 10:54:23 -0700 (PDT) Date: Mon, 6 Jul 2026 18:53:58 +0100 In-Reply-To: <20260706175415.2604046-1-vdonnefort@google.com> Mime-Version: 1.0 References: <20260706175415.2604046-1-vdonnefort@google.com> X-Mailer: git-send-email 2.55.0.rc2.803.g1fd1e6609c-goog Message-ID: <20260706175415.2604046-2-vdonnefort@google.com> Subject: [PATCH v2 01/18] KVM: arm64: Add __pkvm_private_range_pa From: Vincent Donnefort To: maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kernel-team@android.com, qperret@google.com, tabba@google.com, Vincent Donnefort Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260706_105425_716551_FA73C4E0 X-CRM114-Status: UNSURE ( 8.37 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Mappings in the pKVM private range are not identity mapped, making the standard __hyp_pa() unsuitable for translating these addresses. Introduce __pkvm_private_range_pa() to resolve physical addresses for this range by walking the hypervisor page-table. This will be useful for the upcoming pKVM heap allocator. Signed-off-by: Vincent Donnefort diff --git a/arch/arm64/kvm/hyp/include/nvhe/mm.h b/arch/arm64/kvm/hyp/include/nvhe/mm.h index 6e83ce35c2f2..d3137c16b632 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/mm.h +++ b/arch/arm64/kvm/hyp/include/nvhe/mm.h @@ -30,5 +30,6 @@ int __pkvm_create_private_mapping(phys_addr_t phys, size_t size, unsigned long *haddr); int pkvm_create_stack(phys_addr_t phys, unsigned long *haddr); int pkvm_alloc_private_va_range(size_t size, unsigned long *haddr); +phys_addr_t __pkvm_private_range_pa(void *va); #endif /* __KVM_HYP_MM_H */ diff --git a/arch/arm64/kvm/hyp/nvhe/mm.c b/arch/arm64/kvm/hyp/nvhe/mm.c index 3b0bee496bff..773426a68d2d 100644 --- a/arch/arm64/kvm/hyp/nvhe/mm.c +++ b/arch/arm64/kvm/hyp/nvhe/mm.c @@ -502,3 +502,17 @@ int refill_memcache(struct kvm_hyp_memcache *mc, unsigned long min_pages, return ret; } + +phys_addr_t __pkvm_private_range_pa(void *va) +{ + kvm_pte_t pte = 0; + s8 level; + + hyp_spin_lock(&pkvm_pgd_lock); + WARN_ON(kvm_pgtable_get_leaf(&pkvm_pgtable, (u64)va, &pte, &level)); + hyp_spin_unlock(&pkvm_pgd_lock); + + WARN_ON(!kvm_pte_valid(pte)); + + return kvm_pte_to_phys(pte) + offset_in_page(va); +} -- 2.55.0.rc2.803.g1fd1e6609c-goog