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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 13A28CD5BD2 for ; Wed, 27 May 2026 03:31:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=HcszoUDc7316A03Dx3QXGOd8FcU7DWvjuNUEWPnVcI4=; b=CHER4iyRwuVwQwF8ffOVoi3P4h dh/QgtRvb7+DhSsCz6egaAUxZ6kV7nxXIA4NaqJGrRPrr+seSZCpcjG76UEMMWgAeHicTnNDeaTXg oWxvtyy1hsif8m4Q5wumplxcoAnOjFwkZzGDByzLpdAxHhYXMTtVtOAhogtuX9+M+TF3eGyDnkmQv wmkR4+3UFSZqKhyJffa5dH4V42U6WvTsQlItMUbzT8RpqGfFsjXsM/islKuFiS3+4mxwlDKbX7MRM CZoddrhOvnFKrRRD2bBJH5gNBS+Qju0joXbNGs4feGTiE3LdPJYK/CT77xx3iDj96gyhn4ngVYuzP gkeqwTdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wS4zh-00000003GDW-0jbj; Wed, 27 May 2026 03:31:45 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wS4zd-00000003GA5-0Clw for linux-arm-kernel@bombadil.infradead.org; Wed, 27 May 2026 03:31:41 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=HcszoUDc7316A03Dx3QXGOd8FcU7DWvjuNUEWPnVcI4=; b=D/cFipoL+i8syv7pdls6sanpjz PS7IYw7P5gmsUv1IrKaMkVFWDPSco9VCSelGpXAGtDvX2egFXMrjoiiPRlczH36VFc9UibdArATAm e807iUxlLhpNMsywq7l0PXDvv6XvUh8lSrQIE5wQ0LT5tdxDnU0/46vQ7nXlZbNFfBGLZiXVInfcr JGZAsLIbmazC9gTwP7OXjmZHt/u2imowKcLg+6f/hzPjlW7Yh97zPkfRw696spjX044OI2XgUz0LV amvjqU8Utp1yZnEneQhCg2j0uPhSDvLqzfN1ZoGiDFogWfmYJjit05omvOpT+VUFDgUfcycgELKPD Fgnc+l2Q==; Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]) by desiato.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wS4zZ-0000000CqyY-2ntT for linux-arm-kernel@lists.infradead.org; Wed, 27 May 2026 03:31:39 +0000 Received: by mail-pf1-x444.google.com with SMTP id d2e1a72fcca58-837dfccd950so5231871b3a.0 for ; Tue, 26 May 2026 20:31:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1779852696; x=1780457496; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HcszoUDc7316A03Dx3QXGOd8FcU7DWvjuNUEWPnVcI4=; b=blf/MMtZ4GsUxGzz2WFUPCJ/Y+JiH80/1wfva7NQ9KlfDRI22vmrFMVYHu+I2HCybB Y7tbubCdC9bJnNH3NSY1RzXEIZUysu+g5aOQV/uer95zx+3gzAWjO5pLs8esjHyVdz4H FGoLEcBFymAN0jaFDa7RKMf8GfBJA9dYihsTlPGL4pAO10mXZTy7TW3nMmHeXBRSVZK7 RRnt1wPbW32iSpxZbFTvUDyVcy2+O0WNrwxjSlt8gN2vvVpbqsdQCLGgnagjmNcFvb2E N7PtozNe1LDxyhq6kXNwASa+ua/rWmEO5BNdFRenl3RLIqvwlmCz6XWKY2Z7j7lbaAOW RuVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779852696; x=1780457496; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=HcszoUDc7316A03Dx3QXGOd8FcU7DWvjuNUEWPnVcI4=; b=jBbiAqni3lqBtfhBHp/kZVvMwj/k1oDiMRvy8JXaUfoDtRISf4mABIRmop6dp0tYh1 LVxE9XkVMrpwoyqrlkQ135Tyg9xHQRfvUV35fhDcJHmdiWSp2noINhMxpEKcAuTbYM3i heNLcb5jbBGSee5WnCJXP2GqIqwBs9AuI1r8O67D1LVK+Sew0p0xAScDnqXPkDtyNl8m yRRw+5m12ZBf3QzO8G8tzv/lyGjUeLsYTLfEQGrOoHxHE+ZK55Us+n9qse0k7B8tnJdK UUHhKsnKHsQY9cw2LxNNHecIAxrC+K/8ExCcqMAw53uH9YUX+YnPXN/tW8/M5TedJeCd kBLA== X-Gm-Message-State: AOJu0YzR0SnwQBSyvhMkZMsEoK622EDLFxtubnOLwk9eBI/4K6bvYYQE mIjgRqbHRxHD6X/uARLHgDGRHZAjzTMv6wPiDSflSLSaSIZ07zgtS2ZLzELxe1EE0mJVWA== X-Gm-Gg: Acq92OFRfyXGM7PZL2TVgvPxFETzGbos3jOgQNy01IPg3v1VOUddNNWEPRdRaWBXPCv DdAaZOiAuTyeHwwxgJlkl1TtzGD5AzXl+llsuqT85+imHMpZo5KKPOp0BvxxLpc7Uc6g0Zd8ohw YN6aGTnpb4wk3bUNuGRY3bu65Ms60Ix6nCOnKfak4cKUFE7Ekd0HI8n4jUiIvo0ppKKi+LytLsm zaBH6pWmTmQT6OcWYgWph3azkgpJXYruEJmLen7fDntFyfWNnpRc81nYrva6HH3e3CJFLpxJ+ta w5APe5M0+4/fVVY5WpLyv+zVr38meNEpLIh4o6xsUnwtwoaoWQhptctIdlaF4HNpe64/2GO7sPE MUyQObMNdXpNj/umos28W19tZSQlxoNQYF/T9nTFSwfh4UmyuZLERTu0AvF9cCtN5dFbayJage5 dD03hiPd34FWXDwvpSpXxixvVivZL73pVJmIQePPqqNakEkNdivRu/yu1Lrw== X-Received: by 2002:a05:6a00:3a0d:b0:837:8c8f:8f51 with SMTP id d2e1a72fcca58-8415f3bdb92mr20798104b3a.47.1779852696430; Tue, 26 May 2026 20:31:36 -0700 (PDT) Received: from intel.company.local ([210.184.73.204]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-841d7307596sm749688b3a.59.2026.05.26.20.31.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 May 2026 20:31:35 -0700 (PDT) From: Wandun Chen To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, kexec@lists.infradead.org, iommu@lists.linux.dev, zhaomeijing@lixiang.com Cc: catalin.marinas@arm.com, will@kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, robh@kernel.org, saravanak@kernel.org, akpm@linux-foundation.org, bhe@redhat.com, rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org, ruirui.yang@linux.dev, m.szyprowski@samsung.com, robin.murphy@arm.com, quic_obabatun@quicinc.com Subject: [PATCH v3 11/11] loongarch: kdump: exclude non-dumpable reserved memory regions from vmcore Date: Wed, 27 May 2026 11:29:17 +0800 Message-ID: <20260527032917.3385849-12-chenwandun1@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260527032917.3385849-1-chenwandun1@gmail.com> References: <20260527032917.3385849-1-chenwandun1@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260527_043138_117756_80FBD858 X-CRM114-Status: GOOD ( 11.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Wandun Chen Apply the same non-dumpable reserved memory filtering to LoongArch kdump as was done for arm64. Use of_reserved_mem_kdump_exclude() to drop flagged regions from the elfcorehdr PT_LOAD segments, and of_reserved_mem_kdump_nr_ranges() to pre-size the crash_mem array. Signed-off-by: Wandun Chen --- arch/loongarch/kernel/machine_kexec_file.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/loongarch/kernel/machine_kexec_file.c b/arch/loongarch/kernel/machine_kexec_file.c index 5584b798ba46..4b918c3d4a28 100644 --- a/arch/loongarch/kernel/machine_kexec_file.c +++ b/arch/loongarch/kernel/machine_kexec_file.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -67,6 +68,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz) nr_ranges = 2; /* for exclusion of crashkernel region */ for_each_mem_range(i, &start, &end) nr_ranges++; + nr_ranges += of_reserved_mem_kdump_nr_ranges(); cmem = kmalloc_flex(*cmem, ranges, nr_ranges); if (!cmem) @@ -91,6 +93,10 @@ static int prepare_elf_headers(void **addr, unsigned long *sz) goto out; } + ret = of_reserved_mem_kdump_exclude(cmem); + if (ret) + goto out; + ret = crash_prepare_elf64_headers(cmem, true, addr, sz); out: -- 2.43.0