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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51953C433FE for ; Mon, 10 Jan 2022 21:09:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3503F6B0075; Mon, 10 Jan 2022 16:09:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2FDEE6B0078; Mon, 10 Jan 2022 16:09:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0DB0E6B007D; Mon, 10 Jan 2022 16:09:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0020.hostedemail.com [216.40.44.20]) by kanga.kvack.org (Postfix) with ESMTP id E45E56B0075 for ; Mon, 10 Jan 2022 16:09:05 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id A1013824C428 for ; Mon, 10 Jan 2022 21:09:05 +0000 (UTC) X-FDA: 79015617450.11.4AB57DD Received: from smtp-fw-9103.amazon.com (smtp-fw-9103.amazon.com [207.171.188.200]) by imf11.hostedemail.com (Postfix) with ESMTP id 1BAA84000D for ; Mon, 10 Jan 2022 21:09:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1641848944; x=1673384944; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=YIWq81r60zfkEYgTyv+1nuUbOltX8pQmAlK88kahj7U=; b=rUPW4lcAKXUgqqhdHY+ns4hsF5gy2oCZBHfm/I/vx9/xihIeNj3Eqsqk 0kfkJ0w1/5YpZhEOcfaZaaiZkCGRSuWzfFFG8c6ErClIStI2CaT0uOdk8 tWfJef758wld4FD1hFgMZKvKZJhHZqwOJx/yx+Sau9idag6mnyn08emkQ 0=; X-IronPort-AV: E=Sophos;i="5.88,278,1635206400"; d="scan'208";a="983755819" Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO email-inbound-relay-iad-1d-10222bbc.us-east-1.amazon.com) ([10.25.36.210]) by smtp-border-fw-9103.sea19.amazon.com with ESMTP; 10 Jan 2022 21:09:01 +0000 Received: from EX13MTAUWB001.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan3.iad.amazon.com [10.40.163.38]) by email-inbound-relay-iad-1d-10222bbc.us-east-1.amazon.com (Postfix) with ESMTPS id 478641A0040; Mon, 10 Jan 2022 21:08:59 +0000 (UTC) Received: from EX13D13UWA003.ant.amazon.com (10.43.160.181) by EX13MTAUWB001.ant.amazon.com (10.43.161.249) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Mon, 10 Jan 2022 21:08:30 +0000 Received: from EX13MTAUEA002.ant.amazon.com (10.43.61.77) by EX13D13UWA003.ant.amazon.com (10.43.160.181) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Mon, 10 Jan 2022 21:08:30 +0000 Received: from dev-dsk-fllinden-2c-d7720709.us-west-2.amazon.com (172.19.206.175) by mail-relay.amazon.com (10.43.61.169) with Microsoft SMTP Server id 15.0.1497.26 via Frontend Transport; Mon, 10 Jan 2022 21:08:29 +0000 Received: by dev-dsk-fllinden-2c-d7720709.us-west-2.amazon.com (Postfix, from userid 6262777) id 92312B5F; Mon, 10 Jan 2022 21:08:29 +0000 (UTC) From: Frank van der Linden To: , , , , , , , , , , , CC: , Frank van der Linden Subject: [PATCH 3/3] efi: enforce usable memory range after reserving regions Date: Mon, 10 Jan 2022 21:08:09 +0000 Message-ID: <20220110210809.3528-4-fllinden@amazon.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220110210809.3528-1-fllinden@amazon.com> References: <20220110210809.3528-1-fllinden@amazon.com> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Queue-Id: 1BAA84000D X-Stat-Signature: zsnosujgz47u6trud3d9mrmxwkn7uafo Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=amazon.com header.s=amazon201209 header.b=rUPW4lcA; dmarc=pass (policy=quarantine) header.from=amazon.com; spf=pass (imf11.hostedemail.com: domain of "prvs=0027d8dc3=fllinden@amazon.com" designates 207.171.188.200 as permitted sender) smtp.mailfrom="prvs=0027d8dc3=fllinden@amazon.com" X-Rspamd-Server: rspam03 X-HE-Tag: 1641848944-18867 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The usable memory range may be restricted through parameters that did not come from EFI, like the FDT "linux,usable-memory-range" property. Enforce this range after the EFI memory map regions have been processed. Signed-off-by: Frank van der Linden --- drivers/firmware/efi/efi-init.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-i= nit.c index b19ce1a83f91..280e9178c7df 100644 --- a/drivers/firmware/efi/efi-init.c +++ b/drivers/firmware/efi/efi-init.c @@ -204,6 +204,13 @@ static __init void reserve_regions(void) memblock_reserve(paddr, size); } } + + /* + * Done, filter !nomap memory we just added so that the + * usable range is enforced. This is normally only set + * for crash kernels on some architectures. + */ + memblock_enforce_usable_range(); } =20 void __init efi_init(void) --=20 2.32.0