From patchwork Tue Nov 17 18:15:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Perret X-Patchwork-Id: 1401742 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=JQlCWex6; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CbDgc5tvgz9sRR for ; Wed, 18 Nov 2020 05:17:32 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730099AbgKQSQ4 (ORCPT ); Tue, 17 Nov 2020 13:16:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730949AbgKQSQ4 (ORCPT ); Tue, 17 Nov 2020 13:16:56 -0500 Received: from mail-wm1-x34a.google.com (mail-wm1-x34a.google.com [IPv6:2a00:1450:4864:20::34a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B69A6C0617A7 for ; Tue, 17 Nov 2020 10:16:55 -0800 (PST) Received: by mail-wm1-x34a.google.com with SMTP id e15so1906296wme.4 for ; Tue, 17 Nov 2020 10:16:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=9NJwaj6H9dpl3R5GKvz3RD0FPuXlHhNUuulS5FTh3Hk=; b=JQlCWex6GQEr90aD+Xq83dUt3R1pZAtX7hpfO3tXPKjNHdQDhvuF4w7p9Uq1cYYUYD 0qrdweQ40YIYcJpB0rKkgokebr+IL6PKzeAVgT/WlcVavgVeGC39u48slN1Uf9VaNibF 7mREaFFzfgYyEmzz/EM0L6NqrHnXIhZ0MgyYVApx8H6kpW0muE4kg6NHnwBm0Z89W6HC BnINsKivgdOVXfLE+ZlQWsr02uvo74sizwj9Y/eaZ3zIO9kF8K2u6C6mTeKsGxWotXkK amR0Q5jpJ0Dgqi7rng0ETiiuwY82ca7PMq+gKYVBGnztUjGQQ+TpyrGRWn42mo1p7mPT J0Ww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=9NJwaj6H9dpl3R5GKvz3RD0FPuXlHhNUuulS5FTh3Hk=; b=A9oMISShkeA9DgGX6iVPJrUvq/5c2TFSY//gHsFPUid9ZlcpHh6YfF2FoUnrAxpyqb iPR0NyNRLX4cBiRH5xrcnT/EXIxWNY1orsit9jHmXCtjvoKmQEgNT8pGFDK5KjszFZQw 1Ch6GXWkMGAVwALC2uNQmFLiUFa7CD/U+jYk3skRAfbWbRgq2v/E8PMQ1Ym0U4+EpA5G e6Z685IbDLaLNEVOiiklfKeV0V2CBDb3b0ppQlw9AMrXTlXGQTAwlovcYD0w4SYTRiqB Rc7LZeFdMmiiIGP+yS3+x3NZk9FUThzgBGoUdLrxektfJpDwZul4Tzo22DRODeswImAZ CCxQ== X-Gm-Message-State: AOAM531ONNdcohrLiOz+qOiaMRSyzCExpLVHIdEJ6prXvCpqGumNmBtk ybty0v1kNUaNqdwaqFdFL1tFdZPnYB6S X-Google-Smtp-Source: ABdhPJyGVJgIcTCT/DdbnY1gsliRaeUzyr2tI4CihTRnunVErPVhmxXy6EImfhV9SGx6S5piiKOb6bkx3WEt Sender: "qperret via sendgmr" X-Received: from luke.lon.corp.google.com ([2a00:79e0:d:210:f693:9fff:fef4:a7ef]) (user=qperret job=sendgmr) by 2002:a1c:44d4:: with SMTP id r203mr394378wma.60.1605637014324; Tue, 17 Nov 2020 10:16:54 -0800 (PST) Date: Tue, 17 Nov 2020 18:15:55 +0000 In-Reply-To: <20201117181607.1761516-1-qperret@google.com> Message-Id: <20201117181607.1761516-16-qperret@google.com> Mime-Version: 1.0 References: <20201117181607.1761516-1-qperret@google.com> X-Mailer: git-send-email 2.29.2.299.gdc1121823c-goog Subject: [RFC PATCH 15/27] of/fdt: Introduce early_init_dt_add_memory_hyp() From: Quentin Perret To: Catalin Marinas , Will Deacon , Marc Zyngier , James Morse , Julien Thierry , Suzuki K Poulose , Rob Herring , Frank Rowand Cc: "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" , open list , "open list:KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" , kernel-team@android.com, android-kvm@google.com, Quentin Perret Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Introduce early_init_dt_add_memory_hyp() to allow KVM to conserve a copy of the memory regions parsed from DT. This will be needed in the context of the protected nVHE feature of KVM/arm64 where the code running at EL2 will be cleanly separated from the host kernel during boot, and will need its own representation of memory. Signed-off-by: Quentin Perret --- drivers/of/fdt.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 4602e467ca8b..af2b5a09c5b4 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -1099,6 +1099,10 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname, #define MAX_MEMBLOCK_ADDR ((phys_addr_t)~0) #endif +void __init __weak early_init_dt_add_memory_hyp(u64 base, u64 size) +{ +} + void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size) { const u64 phys_offset = MIN_MEMBLOCK_ADDR; @@ -1139,6 +1143,7 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size) base = phys_offset; } memblock_add(base, size); + early_init_dt_add_memory_hyp(base, size); } int __init __weak early_init_dt_mark_hotplug_memory_arch(u64 base, u64 size)