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c=relaxed/simple; d=linux-foundation.org; s=korg; t=1688401905; bh=ta27/WrMgddr0A0XUPYklak31CmwlF/MOqNMNN535l8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=S7iiL9yN8F6OXao83B8E6z0JJ9ehgQO9V+IDIb31U0NZCYLtH+g/SEo/4t5knczHa 5CvyH+HMYN8cOcz6YfIrvK3zOHu/Dfy32w3Cyw1JdWjSs1D8z6Agw7N4dAArmeTd82 c2FKVG1Vnt5n41vsrZONLNr6GeZHCfnDNChKNsoo= Date: Mon, 3 Jul 2023 09:31:44 -0700 From: Andrew Morton To: Eric DeVolder Cc: kernel test robot , oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Baoquan He Subject: Re: [akpm-mm:mm-unstable 62/89] include/linux/kexec.h:41:2: error: #error KEXEC_SOURCE_MEMORY_LIMIT not defined Message-Id: <20230703093144.27aa0d991c380f54be34ae93@linux-foundation.org> In-Reply-To: <3e8eecd1-a277-2cfb-690e-5de2eb7b988e@oracle.com> References: <202307031404.Mjmo2JK6-lkp@intel.com> <3e8eecd1-a277-2cfb-690e-5de2eb7b988e@oracle.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: BD8A140012 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: id6wmu3bxe74srjodht7oj9n5nfupct8 X-HE-Tag: 1688401907-672863 X-HE-Meta: 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 MX0zKuzI RuymuqyBc3xi5Yj00FRVhoZI2YOe4jKfhOontCFPMenhkq0yfhCKbN5URcXK/GVOY0vOnaeJ7JgiwJRHBOt+HKDFk+p/ysLSqLSX4vQxL5aHKMeWIXhDwe1dslLwxUmWUFQ/sFkNzYXqi4seMpm0PFyFH4voDvh+eyUkYDN2e5X6fqgfRaOFBxqD+rohfhMwmjFSQhmeU5keJDsPZ4TkOU8LAUSWlGI0zW+igYM22IutCzJkEYQSONfdFvnQ12AET8EUFyQqxV/+onhMFpsq10SkAzO9S1etB+J9/OTpBvCDBaYDxHjCm/U5FJT2UoZL0EPOdej+0fYAcItn5RaTM1coQHxz9plWdQjCvob0fR+AWFfxARAcINa9aGnxQ+o+BOH1TmgK4dCmJl5Y= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 3 Jul 2023 10:31:34 -0500 Eric DeVolder wrote: > Here are three possible courses of action: > - do nothing; preserve existing behavior as intended by the series (even though problems like this > can occur) > - fix it with CRASH_DUMP selecting KEXEC to eliminate the problem This one, please. Or make CRASH_DUMP depend on KEXEC. > - do not fix it but document the reason why this problem occurs in the commit message