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 2375E299ABA; Mon, 5 May 2025 22:19:18 +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=1746483558; cv=none; b=Pq3/Y3K/1jR2aIF933zrE0lzR2xM0jbQ0bkFk4mKtKb/KfkynhUX0dvaXKPEab4K57UoubWPP/FUaUSPCJDiMB82mq16UBHxVQKAMs0G6Vp+lqv8o59rLjnt0WQJiraWsFUnmE8/cTp0oCOHXy9v+QmYVs7LPS/IeBOsm0+urCw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746483558; c=relaxed/simple; bh=3UEqT/+fIc974jJeUM8R4SRv1mtRRd3KVFibWheaoyU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ABoOsHEpQiuRFKfd3OQrMKEuKngQwYpI9A+rGmNKhEbX7nMr1nnJhDmWt4Q8bvRTKWKSYRqtmb6M86IEKGvMmcH/AUJlTjwm3LDsPKX6MaUtmKov53ZDI5HCKEvfTpWwlSkK++ZILy61VL5pedA2mOEOcCpqMIY1qSFpanMjLyc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YQJRpNF6; 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="YQJRpNF6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A510C4CEE4; Mon, 5 May 2025 22:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746483558; bh=3UEqT/+fIc974jJeUM8R4SRv1mtRRd3KVFibWheaoyU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YQJRpNF6WSpMW3rVVPyZqLvNyKywQGN7LCch4fkRynSLNJLXG7+xMLV8KmqwuWO3D NzFQtBId34avcgFZgxuDzQBPxWbE0w7DmAQ/XmYKoYw05golDLpkUqI0PWm/2EBKK9 rM8vNLqmytY2DURjmvSRq3huw8CZMrfoKhD7bHOfulM4RZn1kFVGRvo7TKhXE8CZvm +3Z28Jv328vO79764t9YpsNrYfqR/jBMTownyVGR20hFtu3cOpH5hq0J52CHkuncqA yg4zv8VikOmHHXEquM5vB7SUGfswl6Qo+H+BLyMBGBwelSyY5vpujFokjVo2bmKJ5D +3eDNptPqKtWg== 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, dave.hansen@linux.intel.com, rppt@kernel.org, akpm@linux-foundation.org, richard.weiyang@gmail.com, kevin.brodsky@arm.com, benjamin.berg@intel.com, linux-um@lists.infradead.org Subject: [PATCH AUTOSEL 6.14 114/642] um: Update min_low_pfn to match changes in uml_reserved Date: Mon, 5 May 2025 18:05:30 -0400 Message-Id: <20250505221419.2672473-114-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505221419.2672473-1-sashal@kernel.org> References: <20250505221419.2672473-1-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 6.14.5 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 befed230aac28..91b7710c0a5f4 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -66,6 +66,7 @@ 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