From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-173.mta1.migadu.com (out-173.mta1.migadu.com [95.215.58.173]) (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 A0701145350 for ; Thu, 16 May 2024 11:16:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715858170; cv=none; b=U+LGUsaIgoo9Y7djkabSxvrfLYpmWgk1dCSq4zURd/qvVSvGouZDKZ8FdVEjkpGygjZT4KHOlTxcg2JnTL92NzEO5NqGCNaXOniYsjT8OXWL/Mr1DLypcBUMm2MdPDEbGfVVDnixGOHVxxfc4laESKHGrJC2BAHY5sYeD44ybN0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715858170; c=relaxed/simple; bh=OB7JAvMeIimxmVIdIIm0ayzHuZaHOX29FQ00F2p1ZIA=; h=MIME-Version:Date:Content-Type:From:Message-ID:Subject:To:Cc: In-Reply-To:References; b=TDq2999vNg6+3JQvgDkSCaUOdM4tnJic6IeIMLlY6wp4SC4iPU/dB08d0MWH4rs/Kz4EQhKNFFZRsA/iMzUuU9fNOyW3RYbIjEALCaz9z8xspYghxt5zGcbeZc3Li6q+R0XfjhNo6uaAik8h/rXSsTqR4flEWdpR2e+ajwMJnck= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=qOj+Pk4m; arc=none smtp.client-ip=95.215.58.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="qOj+Pk4m" X-Envelope-To: wangkefeng.wang@huawei.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1715858166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JLeSRS3quX4ZlkgzdAPYMzk5VTg8+XdQRte0NfGmRLA=; b=qOj+Pk4mcfUGWn7xkvKGJBmWnGR3HzgqOzbDB+kKCA5fVuBnOHvvOMmroddBtoDwCYqGvP wdpnWeRBsj9aPvkAz2QuNiOc5Pq8wZzDmCGJSl3xuGlOo4Cu5NA4AqO6U2ZaKoaIEvTbXz eJJ5KE6OxxCj5kktHMv1L81heiVJwlg= X-Envelope-To: akpm@linux-foundation.org X-Envelope-To: linux-mm@kvack.org X-Envelope-To: linux-kernel@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Thu, 16 May 2024 11:16:05 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Yajun Deng" Message-ID: TLS-Required: No Subject: Re: [PATCH] mm/cma: get nid from physical address To: "Kefeng Wang" , akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org In-Reply-To: <1d38aa26-cd2f-4330-9dcc-6c379cecb83b@huawei.com> References: <20240516091701.1527002-1-yajun.deng@linux.dev> <1d38aa26-cd2f-4330-9dcc-6c379cecb83b@huawei.com> X-Migadu-Flow: FLOW_OUT May 16, 2024 at 6:03 PM, "Kefeng Wang" wrote= : >=20 >=20On 2024/5/16 17:17, Yajun Deng wrote: >=20 >=20>=20 >=20> The nid passed to cma_declare_contiguous_nid() may be NUMA_NO_NODE, > >=20 >=20> which is not the actual nid. To get the correct nid, we can get th= e nid > >=20 >=20> from physical address. > >=20 >=20 > Please check >=20 >=20https://lore.kernel.org/linux-riscv/47437c2b-5946-41c6-ad1b-cc03329eb= 230@huawei.com/ >=20 Okay,=20thanks! > >=20 >=20> Signed-off-by: Yajun Deng > >=20 >=20> --- > >=20 >=20> mm/cma.c | 1 + > >=20 >=20> 1 file changed, 1 insertion(+) > >=20 >=20> diff --git a/mm/cma.c b/mm/cma.c > >=20 >=20> index 3e9724716bad..be6cdde32944 100644 > >=20 >=20> --- a/mm/cma.c > >=20 >=20> +++ b/mm/cma.c > >=20 >=20> @@ -361,6 +361,7 @@ int __init cma_declare_contiguous_nid(phys_add= r_t base, > >=20 >=20> kmemleak_ignore_phys(addr); > >=20 >=20> base =3D addr; > >=20 >=20> } > >=20 >=20> + nid =3D early_pfn_to_nid(PHYS_PFN(base)); > >=20 >=20> > ret =3D cma_init_reserved_mem(base, size, order_per_bit, name, r= es_cma); > >=20 >=20> if (ret) > > >