From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15FFD8288B for ; Fri, 9 Feb 2024 19:18:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707506335; cv=none; b=MhT+H5+/DLEt4tr9KllZ+7OHOmV2ad0YHIE/+uP5uRAnpuK5XR9on2DS8z6S4g1Hx/5FjK+RvrEyPW7PJ7ApNqtJFw9Hyb6TxeztOgmbTrT41dJv0AiMyixZpRopoLrGpwVx3ETQkbzhjmfUmgbVEfS04xN7He8k50k+Vaes/mo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707506335; c=relaxed/simple; bh=X8KmDiQk+SpKWveRC9xGKFa6VFjhwQ1gk8oIZP9gixA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=hqay4wIOWIbKmiVkHKiTizlavauLYlZCaidukFsyhnhLqv9NtH5iiVsidzrPOddA0Y6i9M6fXaq/evgRWufs7xP0FG8CVmcQ6LCJdBM7ktlMw/s1we3q42mAedHJYbMLESUCTKfmTHmyoRvujaUSl4dmww4tqTOXhRczrCERQp0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sdf.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=uIjrsUPX; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sdf.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="uIjrsUPX" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc6ade10cb8so3001955276.0 for ; Fri, 09 Feb 2024 11:18:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1707506333; x=1708111133; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=CRnCwxFaBlHNvNYdy1hYfoY/u+PniTnXvczChOkbnWY=; b=uIjrsUPXymSzFWM92J5azeth8k8SAMbNHzynctbWufPBhfaguBrVkTO5Oh0lljjkz3 hZQSEZF0brxXsKeorNrHmFZd4WhV7DFQpGVqqhbqz3IAGqnsUkWFLBHWA1YOrDA4FzyV 6tyVIc5HJsP+HXUh4uo+Kw9Ffrea3sT6gXlKj/7qMzD6Gosxqv6lgcDRKlWYm6SUXxBe h46SoNyAubH2kx5ZBpCPxkbFvZSx8TNKNqKlTOJ58gWfNFjI/0BJCu8qnA95d42vd/7O q4HjonYWRtX9mpLGVnpWKB7ZmwEmY4oLg/S27goz+xqKcaYHUeF/v2XNrvR/TUVAx+5H ea0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707506333; x=1708111133; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=CRnCwxFaBlHNvNYdy1hYfoY/u+PniTnXvczChOkbnWY=; b=Z+1PCMUX2BI8O+/o6JkAXGTnxfODpY7CQV4iF14vR2ZX8ihFCJ5hdwYpuUiPVnbUZ3 6g6F/j8Drnevr+NTfMo/dgz/4XkeDPE8ho0WBWaR18mtbd775YJQrpgRuAzkqbJGasi2 MRxMHAp8dOvIF1w49kAZ3/RD6NwxzR56JOHcY+dZe7tLofPaNIk0eBYvMIjEGwlTClBC v2Coh8AolxZdZZYfd/CKTYkZ0KI/rYgSnXbAZI+Y9PpsDt0FPaM/i+CfWUX1nzYqZazq SpRP13JPje8n/L09hKULqN1w6IHEVblB/D6uR7XmNjYCB3VPIm+ovMOsowvYzgq/LScB ghGw== X-Gm-Message-State: AOJu0YwkjnlahTCA7c6jHNBGPaUFo87vV2XYQX0uy3IHElkdvNRguDnd P+vYKNXCb9/ELn0MdbtFail93JUVLF6Mz56JtEBaN/JVscxLcJfwZRiWJGSVLjociQ== X-Google-Smtp-Source: AGHT+IE2D/9dq1G+XGY3EnJfEpYpWhoRXnUadsjTmnQ9jUN0w+KcMdMs6s8yG0RaRANU9GOhtzoNUc0= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:a05:6902:1002:b0:dc6:e884:2342 with SMTP id w2-20020a056902100200b00dc6e8842342mr13939ybt.5.1707506333090; Fri, 09 Feb 2024 11:18:53 -0800 (PST) Date: Fri, 9 Feb 2024 11:18:51 -0800 In-Reply-To: <20240209123520.778599-1-hbathini@linux.ibm.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240209123520.778599-1-hbathini@linux.ibm.com> Message-ID: Subject: Re: [PATCH linux-next] bpf: fix warning for crash_kexec From: Stanislav Fomichev To: Hari Bathini Cc: bpf@vger.kernel.org, Kexec-ml , Baoquan He , Daniel Borkmann , Alexei Starovoitov Content-Type: text/plain; charset="utf-8" On 02/09, Hari Bathini wrote: > With [1], CONFIG_KEXEC & !CONFIG_CRASH_DUMP is supported but that led > to the below warning: > > "WARN: resolve_btfids: unresolved symbol crash_kexec" > > Fix it by using the appropriate #ifdef. Same question here: how did you find this particular kconfig option (CONFIG_CRASH_DUMP) to use? Looking at the code, crash_kexec is defined in kernel/kexec_core.c and it's gated by CONFIG_KEXEC_CORE. So the existing ifdef seems correct?