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b=RYbXhYataf5TgADzE6aadgbMz0TJb9bjEbRi33FOl0bTfA+k76mXrW5WFw+Vu/qFE lhVUbZfcD25jWdsWejm1YyJPzNqeBpmm5tJlMLmyJ49I+WD0BuNQ1vbHmkvoIId6Fe tuCFq2rGA9lt8ctacb7rJJn1EhsWGv5F4MeKJTo4= Date: Tue, 4 Nov 2025 15:54:11 -0800 From: Andrew Morton To: Pasha Tatashin Cc: Mike Rapoport , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , kernel test robot Subject: Re: [linux-next:master 4972/5926] kernel/kexec_handover_debug.c:16:18: error: use of undeclared identifier 'kho_scratch_cnt' Message-Id: <20251104155411.64385f0726ec775d9f31f61c@linux-foundation.org> In-Reply-To: References: <202511042251.paO6f5BZ-lkp@intel.com> <20251104141501.48a1f76a3f83967f08d00097@linux-foundation.org> 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-Server: rspam05 X-Rspamd-Queue-Id: 337F0160004 X-Stat-Signature: ary45qsos4dis9ctqdebue3z8n61qifa X-Rspam-User: X-HE-Tag: 1762300453-721396 X-HE-Meta: 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 zeTKbeb+ FmOEd92MKZ3F3vOwQiriKRZHeWG5jpPqcfeFWf1L9/pdOxUqPd2CxC0Wk0HXtCbTLVFQJwn58ilWTHgeZxA4dDynjgKK0Ngzj6YpovCF340sVsvzlGzM7eQQHSKxijpMSAlWOHf0I3WoIz3EWqjvqBFF6PZab0/PJy7B930ECbX+6xebFurtsb87ztPv4RcdaUrZ4NiHYzoYKJOLfu8ZuRhcAGJoH4DZZJtE6/uts/HOC8wrJI2VPqizL6ZuDNl+HS5aq2oSegGe8D41O+7pIx8LJcNp0ZEOlsV63fxj7ZeXg7h4w0rdh4XFAGQdtLJtA/xLKIe69WXt4wbuyIK4zLtrTQaH/1I1PDmjO 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: List-Subscribe: List-Unsubscribe: On Tue, 4 Nov 2025 18:12:24 -0500 Pasha Tatashin wrote: > > > -static struct kho_scratch *kho_scratch; > > > -static unsigned int kho_scratch_cnt; > > > +struct kho_scratch *kho_scratch; > > > +unsigned int kho_scratch_cnt; > > > > This patch is making changes which are already present. > > > > > --- a/kernel/kexec_handover_internal.h > > > +++ b/kernel/kexec_handover_internal.h > > > > Against files which were moved to kernel/liveupdate/! > > > > > Andrew, Mike, do you want me to resend the "[PATCH v3 0/3] KHO: kfence > > > + KHO memory corruption fix" series with the fix included? > > > > A little fix against what's presently in mm.git would be great, please. > > Hi Andrew, > > This is because in mm.git you have patches that move kexec_handover* > to kernel/liveupdate/ (and they fix this build problem), but > linux-next does not have these patches. The patch I sent is a fixup > for "kho: warn and fail on metadata or preserved memory in scratch > area" patch. Oh, OK. Please tell others these things :( I think I have it all sorted out, thanks.