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[209.132.180.67]) by mx.google.com with ESMTP id bc12-v6si18197769plb.373.2018.07.11.00.41.54; Wed, 11 Jul 2018 00:41:54 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=J4yi+GBU; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726713AbeGKHor (ORCPT + 22 others); Wed, 11 Jul 2018 03:44:47 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:33441 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726206AbeGKHor (ORCPT ); Wed, 11 Jul 2018 03:44:47 -0400 Received: by mail-pg1-f195.google.com with SMTP id r5-v6so2644712pgv.0 for ; Wed, 11 Jul 2018 00:41:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=PItXgTakqtWpQdCyBHziU3bBiq2X1/Ekd+7Czkvk2eo=; b=J4yi+GBUU3ZdD5V4QCTl0/VkFq/9LrXzrTTb2HIvOgzhrh/gTY46d4Uqtztfl1/Twb 8Ld6FN7tnjq+cMQvaZKFpTifxHsmR7SCzzSWO68TGLBVO+sSrRKZwsqxMr0B9u97hoQT iP7C1slL0HeldBkE4fSunJLeI+cYDK9ISaY7E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=PItXgTakqtWpQdCyBHziU3bBiq2X1/Ekd+7Czkvk2eo=; b=cD2YjVFU8+nXGlMq4DtxgEfI7XQWRmKTvbfBgX6jKs9wFeDPK5kX5bGFtabp4Vz/Cs 33+jfHDpa2c7jBxvVagQNlehdN09XZlmPHhyOmH4tpiNkruezkuK5PhKqiEJd4+tnbt+ 98BsHLl8J72VV51TyPn14aI0r8em24FPedl5wSjhFWLzTlmzcKGCwh6EyyqLkYZQUQ3/ TbVYrpYFYTOA1VsBUKRHnIlI2mhopE4W0ktGGQT5zhUUjXTrFExjboEZch/s2tDQJX4P cBLL51pFT15w3/FDwM1pN7TCQB990b/2HDPnPKG8+Hp3uCZQb0GSbGh7Qa4vP3a4zcI1 /IJw== X-Gm-Message-State: APt69E3Yf+X73F1UWPYUG8N7pHH87LipJ+fHF6gqb/SK0of4Pb0VnNw9 1ZQr1WuFZ8fpV9f/8HKTKtmh8w== X-Received: by 2002:a65:5bc4:: with SMTP id o4-v6mr19428518pgr.448.1531294911472; Wed, 11 Jul 2018 00:41:51 -0700 (PDT) Received: from linaro.org ([121.95.100.191]) by smtp.googlemail.com with ESMTPSA id s144-v6sm4342686pfs.123.2018.07.11.00.41.50 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 11 Jul 2018 00:41:50 -0700 (PDT) From: AKASHI Takahiro To: catalin.marinas@arm.com, will.deacon@arm.com, dhowells@redhat.com, vgoyal@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de Cc: ard.biesheuvel@linaro.org, james.morse@arm.com, bhsharma@redhat.com, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, AKASHI Takahiro Subject: [PATCH v11 04/15] kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump Date: Wed, 11 Jul 2018 16:41:52 +0900 Message-Id: <20180711074203.3019-5-takahiro.akashi@linaro.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180711074203.3019-1-takahiro.akashi@linaro.org> References: <20180711074203.3019-1-takahiro.akashi@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In kdump case, there exists only one dedicated memoblock region as usable memory (crashk_res). With this patch, kexec_walk_memblock() runs a given callback function on this region. Signed-off-by: AKASHI Takahiro Cc: Dave Young Cc: Vivek Goyal Cc: Baoquan He --- kernel/kexec_file.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.17.0 diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index b088324fb3ad..ebf06c3e168d 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -511,6 +511,9 @@ static int kexec_walk_memblock(struct kexec_buf *kbuf, phys_addr_t mstart, mend; struct resource res = { }; + if (kbuf->image->type == KEXEC_TYPE_CRASH) + return func(&crashk_res, kbuf); + if (kbuf->top_down) { for_each_free_mem_range_reverse(i, NUMA_NO_NODE, 0, &mstart, &mend, NULL) {