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Sampat" , linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-efi@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, ardb@kernel.org, akpm@linux-foundation.org, osalvador@suse.de, thomas.lendacky@amd.com, michael.roth@amd.com Subject: Re: [RFC PATCH 2/4] mm: Add support for unaccepted memory hotplug Message-ID: <20251201111201.GAaS14AX18qeHN20xf@fat_crate.local> References: <20251125175753.1428857-1-prsampat@amd.com> <20251125175753.1428857-3-prsampat@amd.com> <66ylzwknm4ftd6utn3nqr63jmhl2ccvcdvyi5fechfnvmfxivu@37pckhjixayh> <20251126223127.GIaSd_v7juUkaW4RTA@fat_crate.local> <20251127181233.GBaSiUkaLzwANS_6WT@fat_crate.local> <20251128113411.GAaSmIs0kSWGhCYkaA@fat_crate.local> <47927c25-a317-488a-823f-ac0588f4eee4@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <47927c25-a317-488a-823f-ac0588f4eee4@kernel.org> X-Rspamd-Queue-Id: B9CEE40015 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: cr9nmec1177xub3j37k67tnprkhrps6m X-HE-Tag: 1764587552-275646 X-HE-Meta: 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 CsANL+vS 7OBC09zSpb1wyFQr31R/jd5rvHepsNBgyXO8NnxfJLlK9Sr0Rcj8VWRmFgwyVkIFdLr3BZF3J40L2CfIzydzriTPMWkU1vooeo5WuZOrRt/urNlY+PJQ8Ejft59wnRQHeKo1CUCm29vNOpg/7mZNbAdpSAPf9ncJDTlji7hToCRzbUWjjjJm+ZMo14rlZ8an/Dc98kfFXJo3UFGGii2r4Fc+Ks10evlnze5zaXmqZCJRZRhs= 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 Mon, Dec 01, 2025 at 10:18:37AM +0100, David Hildenbrand (Red Hat) wrote: > Makes sense to me, especially for confidential VMs where we pass such > kernel-managed data from the old to the new kernel. It shouldn't matter, right? I think the question is whether the kernel should agree to the software contract (/eyeroll) to keep the kernel ABI compatible wrt kexec. And I don't think we have agreed to that AFAIK. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette