From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 68F82359620; Mon, 5 May 2025 22:42:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746484948; cv=none; b=grN4YsZUbC1okOoXf+rI+uza2v02oWp7WcPDHcFw9eaPDBpzdeGOZHuhScFbw1nqxUw4y7ZTOsFJpROPzrd9WZA7RG6beFSr8O39FkaaJ6IFLkK7ITOwxRw0SsHS946vivDloIlsb69g0eLeOyEkk0cujBIOSwKAlO6BKuXD/8o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746484948; c=relaxed/simple; bh=kB3Of2TAfMWjq4ISnDkHwtPTUxxjDoqlJgVbF9jFa5c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Jt+NZz0Ah3pAbsLcoO2JCtKmfMuLx/LrBZkcgz1KCxqP/AOQuGtMBZFZL6md1Y1UW92HY8KYJJ1Xnu2zzlVDrq4NGotNRg1RZu0Di9enPQjB5fwrZvJmwo4bXNJsplEZHbFK3oj6T8HQtOr7EqDWPeaeWwPD9XKDF30EGZWvPds= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tEW8USIO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tEW8USIO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 58CA8C4CEED; Mon, 5 May 2025 22:42:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746484947; bh=kB3Of2TAfMWjq4ISnDkHwtPTUxxjDoqlJgVbF9jFa5c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tEW8USIOHYaxsOxllC0RCLxuGJfEibAjzNccldMpjj/NmOw73MX78T3IQom6QS8hh B3FFcKY6NThbXniWQt1p3pxTMqd4bgOs4gnjDYWbSlhFVtOqM1x5fAZLyIwzJGFKqZ d/wXcMCHvq2XnOo6pxpdT/a1+R6sx+/mb5/UjBDume4afUY14mmJpHfXgQmDNXvgU1 yLyJ170yA93RwBGmjsCM6nGrXWgX9gosloq2FtQGiVM5aXu0CATjovcpHARgDo7T/f 9+icDeIqu9EaX7sFXS/4XPd9w6ojbEYD8aFswcup6Bfmh1cGhS30AsMpkMTuYLEGm0 ktUs+LRSHEzJw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tiwei Bie , Johannes Berg , Sasha Levin , richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, akpm@linux-foundation.org, rppt@kernel.org, dave.hansen@linux.intel.com, richard.weiyang@gmail.com, benjamin.berg@intel.com, kevin.brodsky@arm.com, linux-um@lists.infradead.org Subject: [PATCH AUTOSEL 6.12 090/486] um: Update min_low_pfn to match changes in uml_reserved Date: Mon, 5 May 2025 18:32:46 -0400 Message-Id: <20250505223922.2682012-90-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505223922.2682012-1-sashal@kernel.org> References: <20250505223922.2682012-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 Content-Transfer-Encoding: 8bit From: Tiwei Bie [ Upstream commit e82cf3051e6193f61e03898f8dba035199064d36 ] When uml_reserved is updated, min_low_pfn must also be updated accordingly. Otherwise, min_low_pfn will not accurately reflect the lowest available PFN. Signed-off-by: Tiwei Bie Link: https://patch.msgid.link/20250221041855.1156109-1-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- arch/um/kernel/mem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index a5b4fe2ad9315..6ca9ea4a230bc 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -70,6 +70,7 @@ void __init mem_init(void) map_memory(brk_end, __pa(brk_end), uml_reserved - brk_end, 1, 1, 0); memblock_free((void *)brk_end, uml_reserved - brk_end); uml_reserved = brk_end; + min_low_pfn = PFN_UP(__pa(uml_reserved)); /* this will put all low memory onto the freelists */ memblock_free_all(); -- 2.39.5