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 DBBC5CD4F3C for ; Wed, 20 May 2026 15:27:48 +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=MKKpQxANCCHogl9aY/9W21lvxk3CTd+3ZnVgKVwZ+ss=; b=s2ASbYMaz2c8OCMdWID92uDFwp CNY762L7NJfMDgulUJFj140j1v8gfyO3nv84YaEP0rpUNwKXoUnE6LMB6EaM9QoM7ojpV/OkvLt/Z xUT8vyhUxqwfx358m85ZVPq9irxxhqOVkq+9fuQqUpSetgEnIVByW4Uz3rHuguod22ZuQEWoOQww7 xkjviQGnt35xnGVK9jCjKXhRfqrmtsXI964/8IBdgkfp018qpOk0pxRLFgVKaWthqztNF16ljymGF INRAaL1Y+1UG3Mwmlm/04aMmWt2YmgfFOAdXxtKiXPiAUEugXmV/KLCmr0Xwi5D1Yv4pRpxnE9dhE m9Ve4viA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPipi-00000004zIA-3Pso; Wed, 20 May 2026 15:27:42 +0000 Received: from mail-wm1-x349.google.com ([2a00:1450:4864:20::349]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPipQ-00000004z26-3ApV for linux-arm-kernel@lists.infradead.org; Wed, 20 May 2026 15:27:25 +0000 Received: by mail-wm1-x349.google.com with SMTP id 5b1f17b1804b1-48fed2519daso26722175e9.0 for ; Wed, 20 May 2026 08:27:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1779290843; x=1779895643; 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=MKKpQxANCCHogl9aY/9W21lvxk3CTd+3ZnVgKVwZ+ss=; b=mTc7OtgEt9lYwUuZcDdvvUnepYjBuPN4gdSyaZFKABMm7En3I0zKGJ9SiQVG5n49JZ PbkeP7QcKZk/Q5Jij+oZIdnGCFBkVsG+1JR3HWp1wb3PRAesiUtIvuG8CXpoZQkPhUNd cP0Rip3Zp5UTxINKFgKAJwYlFMwSl74NysRlPFiKHCy+UgAvipTW/osZ1es6o6hRGMft Vq6iCCzPnIRc10U2TnraE4JqgeqzCypcXfZ1oG+4isziP/PXV7Rs57DFcOEn5+arU3cW sIOi4Ou2Xfg/IzwGjVeJ71I9Y3AmdXWnO3CFJK0GYJjJ6fmfeIoAVg7kh3EmLsG48sab Akdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779290843; x=1779895643; 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=MKKpQxANCCHogl9aY/9W21lvxk3CTd+3ZnVgKVwZ+ss=; b=eO/QbqxpjDPnYAGKEYiOFdgf6e4kREyQq5XgEgoWKiwuLqRZIEeM/jZPhuzbOu0/kB hS6KnMHkJMtzBNxnCkzAPYBtk7dbSPo9/Jddpl4H3xIWOfgqBaqJS7sCAzUbTOnOxH6w wAp1KEd8O77+hf9yNzMIuUwWbz/qhh2Jm5+17+1lZuHafRzK4QLQiY1NgTXlKHMFaJen wOTpQyUUuSD7ZiugVXmTNd694gysHQsca/3bgbFb40kN4WhspWNHDmBcxMVxgwFysozZ Jk02LqsM6rnAw90phCOaqBMj5/NFLF4/jddLxgU1tzNq5eUhQCIwBNlxS+CoM1A1DPYX V2MA== X-Gm-Message-State: AOJu0YwQ8YgOqJp/BDwO5sSFcdUYkpmPibaqTv5DhTp/NT0I8tIQtYZF sE+E7B4rKy4eFdfYA2qJXnjh835xi42QHhG/u+3UtZ0hS2NhdnLMqM1Q1q3A5Yyc6OScdZnHi7C /PxFWkBNTZCSYPIoIZY4QBg== X-Received: from wmdd19.prod.google.com ([2002:a05:600c:a213:b0:488:c696:8bf2]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:a11c:b0:48f:e230:8cac with SMTP id 5b1f17b1804b1-48fe662a1cbmr281507845e9.32.1779290842698; Wed, 20 May 2026 08:27:22 -0700 (PDT) Date: Wed, 20 May 2026 16:26:41 +0100 In-Reply-To: <20260520152650.4107895-1-vdonnefort@google.com> Mime-Version: 1.0 References: <20260520152650.4107895-1-vdonnefort@google.com> X-Mailer: git-send-email 2.54.0.631.ge1b05301d1-goog Message-ID: <20260520152650.4107895-9-vdonnefort@google.com> Subject: [PATCH 08/17] KVM: arm64: Handle PKVM_HYP_REQ_HYP_ALLOC request 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-20260520_082724_839905_005C1182 X-CRM114-Status: GOOD ( 10.34 ) 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 Introduce a new pkvm_hyp_request type asking the host to top up the pKVM heap allocator. Signed-off-by: Vincent Donnefort diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h index fb4d140c99cc..bf43235e62d3 100644 --- a/arch/arm64/include/asm/kvm_pkvm.h +++ b/arch/arm64/include/asm/kvm_pkvm.h @@ -206,6 +206,7 @@ struct pkvm_mapping { enum pkvm_hyp_req_type { PKVM_HYP_NO_REQ = 0, + PKVM_HYP_REQ_HYP_ALLOC, __PKVM_HYP_REQ_TYPE_MAX, }; @@ -227,9 +228,13 @@ struct pkvm_hyp_req { static inline size_t pkvm_hyp_req_arg_size(u8 type) { + struct pkvm_hyp_req *req; + switch (type) { case PKVM_HYP_NO_REQ: return 0; + case PKVM_HYP_REQ_HYP_ALLOC: + return sizeof(req->mem); default: WARN_ON(1); } diff --git a/arch/arm64/kvm/pkvm.c b/arch/arm64/kvm/pkvm.c index ce96a6f90bd0..f5288a350069 100644 --- a/arch/arm64/kvm/pkvm.c +++ b/arch/arm64/kvm/pkvm.c @@ -116,6 +116,9 @@ static int pkvm_handle_hyp_req(struct pkvm_hyp_req *req) int ret = -EINVAL; switch (req->type) { + case PKVM_HYP_REQ_HYP_ALLOC: + ret = pkvm_hyp_topup(PKVM_TOPUP_HYP_ALLOC, req->mem.nr_pages); + break; } trace_kvm_handle_pkvm_hyp_req(req, ret); -- 2.54.0.631.ge1b05301d1-goog