From: Borislav Petkov <bp@alien8.de>
To: "David Hildenbrand (Red Hat)" <david@kernel.org>
Cc: Kiryl Shutsemau <kas@kernel.org>,
"Pratik R. Sampat" <prsampat@amd.com>,
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
Date: Fri, 28 Nov 2025 12:34:11 +0100 [thread overview]
Message-ID: <20251128113411.GAaSmIs0kSWGhCYkaA@fat_crate.local> (raw)
In-Reply-To: <beec5651-5c23-4f5e-a0a3-d1cc01a8490a@kernel.org>
On Fri, Nov 28, 2025 at 10:30:15AM +0100, David Hildenbrand (Red Hat) wrote:
> kexecing the same kernel is typically used for kdump purposes.
>
> kexecing different kernels is used for all sorts of things (live-upgrade,
> grub-emu come to mind). It's quite common to kexec different kernels, or
> maybe I misunderstood the question here?
And my question is: since when do we enforce no-ABI-changes between kernels so
that we can kexec any kernel into any kernel?
By that logic I should be able to kexec 5.x into 6.x. I'll bet some money that
it won't work.
So unless it is written down somewhere, I think we should probably talk first
what we want to support and why...
Makes sense?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2025-11-28 11:34 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-25 17:57 [RFC PATCH 0/4] SEV-SNP Unaccepted Memory Hotplug Pratik R. Sampat
2025-11-25 17:57 ` [RFC PATCH 1/4] efi/libstub: Decouple memory bitmap from the unaccepted table Pratik R. Sampat
2025-11-26 11:08 ` Kiryl Shutsemau
2025-11-26 22:27 ` Pratik R. Sampat
2025-11-27 17:29 ` Kiryl Shutsemau
2025-11-25 17:57 ` [RFC PATCH 2/4] mm: Add support for unaccepted memory hotplug Pratik R. Sampat
2025-11-26 11:12 ` Kiryl Shutsemau
2025-11-26 22:27 ` Pratik R. Sampat
2025-11-27 17:40 ` Kiryl Shutsemau
2025-11-28 9:34 ` David Hildenbrand (Red Hat)
2025-12-01 17:15 ` Pratik R. Sampat
2025-12-01 18:25 ` David Hildenbrand (Red Hat)
2025-12-01 19:35 ` Pratik R. Sampat
2025-12-01 17:15 ` Pratik R. Sampat
2025-12-01 17:48 ` Kiryl Shutsemau
2025-12-01 17:58 ` Pratik R. Sampat
2025-11-26 22:31 ` Borislav Petkov
2025-11-27 17:35 ` Kiryl Shutsemau
2025-11-27 18:12 ` Borislav Petkov
2025-11-28 9:30 ` David Hildenbrand (Red Hat)
2025-11-28 11:34 ` Borislav Petkov [this message]
2025-12-01 9:18 ` David Hildenbrand (Red Hat)
2025-12-01 11:12 ` Borislav Petkov
2025-12-01 18:32 ` David Hildenbrand (Red Hat)
2025-12-01 19:10 ` Borislav Petkov
2025-12-01 20:10 ` David Hildenbrand (Red Hat)
2025-12-01 20:25 ` Borislav Petkov
2025-12-01 20:36 ` David Hildenbrand (Red Hat)
2025-12-03 14:46 ` Kiryl Shutsemau
2025-12-03 15:58 ` Borislav Petkov
2025-12-03 15:00 ` Rik van Riel
2025-11-28 9:32 ` David Hildenbrand (Red Hat)
2025-12-01 17:21 ` Pratik R. Sampat
2025-12-01 18:36 ` David Hildenbrand (Red Hat)
2025-12-01 19:35 ` Pratik R. Sampat
2025-12-09 21:36 ` Pratik R. Sampat
2025-12-11 15:00 ` Kiryl Shutsemau
2025-12-11 22:07 ` Pratik R. Sampat
2025-11-25 17:57 ` [RFC PATCH 3/4] x86/sev: Introduce hotplug-aware SNP page state validation Pratik R. Sampat
2025-11-25 17:57 ` [RFC PATCH 4/4] mm: Add support for unaccepted memory hot-remove Pratik R. Sampat
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