From: Mike Rapoport <rppt@kernel.org>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Pratyush Yadav <ptyadav@amazon.de>,
Changyuan Lyu <changyuanl@google.com>,
linux-kernel@vger.kernel.org, graf@amazon.com,
akpm@linux-foundation.org, luto@kernel.org,
anthony.yznaga@oracle.com, arnd@arndb.de, ashish.kalra@amd.com,
benh@kernel.crashing.org, bp@alien8.de, catalin.marinas@arm.com,
dave.hansen@linux.intel.com, dwmw2@infradead.org,
ebiederm@xmission.com, mingo@redhat.com, jgowans@amazon.com,
corbet@lwn.net, krzk@kernel.org, mark.rutland@arm.com,
pbonzini@redhat.com, pasha.tatashin@soleen.com, hpa@zytor.com,
peterz@infradead.org, robh+dt@kernel.org, robh@kernel.org,
saravanak@google.com, skinsburskii@linux.microsoft.com,
rostedt@goodmis.org, tglx@linutronix.de, thomas.lendacky@amd.com,
usama.arif@bytedance.com, will@kernel.org,
devicetree@vger.kernel.org, kexec@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH v5 09/16] kexec: enable KHO support for memory preservation
Date: Wed, 9 Apr 2025 19:28:47 +0300 [thread overview]
Message-ID: <Z_agP1ohC3sVZrM7@kernel.org> (raw)
In-Reply-To: <20250407141626.GB1557073@nvidia.com>
On Mon, Apr 07, 2025 at 11:16:26AM -0300, Jason Gunthorpe wrote:
> On Sun, Apr 06, 2025 at 07:11:14PM +0300, Mike Rapoport wrote:
>
> KHO needs to provide a way to give back an allocated struct page/folio
> that can be freed back to the buddy alloactor, of the proper
> order. Whatever you call that function it belongs to KHO as it is
> KHO's primary responsibility to manage the buddy allocator and the
> struct pages.
If order is only important for freeing memory back to page allocator, you
don't really need it. Freeing contiguous power-of-two number of pages with
proper alignment will give the same result, just a tad slower.
> Jason
>
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2025-04-09 16:29 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-20 1:55 [PATCH v5 00/16] kexec: introduce Kexec HandOver (KHO) Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 01/16] kexec: define functions to map and unmap segments Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 02/16] mm/mm_init: rename init_reserved_page to init_deferred_page Changyuan Lyu
2025-03-20 7:10 ` Krzysztof Kozlowski
2025-03-20 17:15 ` Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 03/16] memblock: add MEMBLOCK_RSRV_KERN flag Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 04/16] memblock: Add support for scratch memory Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 05/16] memblock: introduce memmap_init_kho_scratch() Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 06/16] hashtable: add macro HASHTABLE_INIT Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 07/16] kexec: add Kexec HandOver (KHO) generation helpers Changyuan Lyu
2025-03-21 13:34 ` Jason Gunthorpe
2025-03-23 19:02 ` Changyuan Lyu
2025-03-24 16:28 ` Jason Gunthorpe
2025-03-25 0:21 ` Changyuan Lyu
2025-03-25 2:20 ` Jason Gunthorpe
2025-03-24 18:40 ` Frank van der Linden
2025-03-25 19:19 ` Mike Rapoport
2025-03-25 21:56 ` Frank van der Linden
2025-03-26 11:59 ` Mike Rapoport
2025-03-26 16:25 ` Frank van der Linden
2025-03-20 1:55 ` [PATCH v5 08/16] kexec: add KHO parsing support Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 09/16] kexec: enable KHO support for memory preservation Changyuan Lyu
2025-03-21 13:46 ` Jason Gunthorpe
2025-03-22 19:12 ` Mike Rapoport
2025-03-23 18:55 ` Jason Gunthorpe
2025-03-24 18:18 ` Mike Rapoport
2025-03-24 20:07 ` Jason Gunthorpe
2025-03-26 12:07 ` Mike Rapoport
2025-03-23 19:07 ` Changyuan Lyu
2025-03-25 2:04 ` Jason Gunthorpe
2025-03-27 10:03 ` Pratyush Yadav
2025-03-27 13:31 ` Jason Gunthorpe
2025-03-27 17:28 ` Pratyush Yadav
2025-03-28 12:53 ` Jason Gunthorpe
2025-04-02 16:44 ` Changyuan Lyu
2025-04-02 16:47 ` Pratyush Yadav
2025-04-02 18:37 ` Pasha Tatashin
2025-04-02 18:49 ` Pratyush Yadav
2025-04-02 19:16 ` Pratyush Yadav
2025-04-03 11:42 ` Jason Gunthorpe
2025-04-03 13:58 ` Mike Rapoport
2025-04-03 14:24 ` Jason Gunthorpe
2025-04-04 9:54 ` Mike Rapoport
2025-04-04 12:47 ` Jason Gunthorpe
2025-04-04 13:53 ` Mike Rapoport
2025-04-04 14:30 ` Jason Gunthorpe
2025-04-04 16:24 ` Pratyush Yadav
2025-04-04 17:31 ` Jason Gunthorpe
2025-04-06 16:13 ` Mike Rapoport
2025-04-06 16:11 ` Mike Rapoport
2025-04-07 14:16 ` Jason Gunthorpe
2025-04-07 16:31 ` Mike Rapoport
2025-04-07 17:03 ` Jason Gunthorpe
2025-04-09 9:06 ` Mike Rapoport
2025-04-09 12:56 ` Jason Gunthorpe
2025-04-09 13:58 ` Mike Rapoport
2025-04-09 15:37 ` Jason Gunthorpe
2025-04-09 16:19 ` Mike Rapoport
2025-04-09 16:28 ` Jason Gunthorpe
2025-04-10 16:51 ` Matthew Wilcox
2025-04-10 17:31 ` Jason Gunthorpe
2025-04-09 16:28 ` Mike Rapoport [this message]
2025-04-09 18:32 ` Jason Gunthorpe
2025-04-04 16:15 ` Pratyush Yadav
2025-04-06 16:34 ` Mike Rapoport
2025-04-07 14:23 ` Jason Gunthorpe
2025-04-03 13:57 ` Mike Rapoport
2025-04-11 4:02 ` Changyuan Lyu
2025-04-03 15:50 ` Pratyush Yadav
2025-04-03 16:10 ` Jason Gunthorpe
2025-04-03 17:37 ` Pratyush Yadav
2025-04-04 12:54 ` Jason Gunthorpe
2025-04-04 15:39 ` Pratyush Yadav
2025-04-09 8:35 ` Mike Rapoport
2025-03-20 1:55 ` [PATCH v5 10/16] kexec: add KHO support to kexec file loads Changyuan Lyu
2025-03-21 13:48 ` Jason Gunthorpe
2025-03-20 1:55 ` [PATCH v5 11/16] kexec: add config option for KHO Changyuan Lyu
2025-03-20 7:10 ` Krzysztof Kozlowski
2025-03-20 17:18 ` Changyuan Lyu
2025-03-24 4:18 ` Dave Young
2025-03-24 19:26 ` Pasha Tatashin
2025-03-25 1:24 ` Dave Young
2025-03-25 3:07 ` Dave Young
2025-03-25 6:57 ` Baoquan He
2025-03-25 8:36 ` Dave Young
2025-03-26 9:17 ` Dave Young
2025-03-26 11:28 ` Mike Rapoport
2025-03-26 12:09 ` Dave Young
2025-03-25 14:04 ` Pasha Tatashin
2025-03-20 1:55 ` [PATCH v5 12/16] arm64: add KHO support Changyuan Lyu
2025-03-20 7:13 ` Krzysztof Kozlowski
2025-03-20 8:30 ` Krzysztof Kozlowski
2025-03-20 23:29 ` Changyuan Lyu
2025-04-11 3:47 ` Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 13/16] x86/setup: use memblock_reserve_kern for memory used by kernel Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 14/16] x86: add KHO support Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 15/16] memblock: add KHO support for reserve_mem Changyuan Lyu
2025-03-20 1:55 ` [PATCH v5 16/16] Documentation: add documentation for KHO Changyuan Lyu
2025-03-20 14:45 ` Jonathan Corbet
2025-03-21 6:33 ` Changyuan Lyu
2025-03-21 13:46 ` Jonathan Corbet
2025-03-25 14:19 ` [PATCH v5 00/16] kexec: introduce Kexec HandOver (KHO) Pasha Tatashin
2025-03-25 15:03 ` Mike Rapoport
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