From: Dave Hansen <dave.hansen@intel.com>
To: Changyuan Lyu <changyuanl@google.com>, linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, anthony.yznaga@oracle.com,
arnd@arndb.de, ashish.kalra@amd.com, benh@kernel.crashing.org,
bp@alien8.de, catalin.marinas@arm.com, corbet@lwn.net,
dave.hansen@linux.intel.com, devicetree@vger.kernel.org,
dwmw2@infradead.org, ebiederm@xmission.com, graf@amazon.com,
hpa@zytor.com, jgowans@amazon.com, kexec@lists.infradead.org,
krzk@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-doc@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org,
mark.rutland@arm.com, mingo@redhat.com,
pasha.tatashin@soleen.com, pbonzini@redhat.com,
peterz@infradead.org, ptyadav@amazon.de, robh@kernel.org,
rostedt@goodmis.org, rppt@kernel.org, saravanak@google.com,
skinsburskii@linux.microsoft.com, tglx@linutronix.de,
thomas.lendacky@amd.com, will@kernel.org, x86@kernel.org
Subject: Re: [PATCH v6 10/14] x86/setup: use memblock_reserve_kern for memory used by kernel
Date: Mon, 28 Apr 2025 15:15:52 -0700 [thread overview]
Message-ID: <1ccfa9a9-f7fb-4481-ab6b-12866c1e1577@intel.com> (raw)
In-Reply-To: <20250411053745.1817356-11-changyuanl@google.com>
On 4/10/25 22:37, Changyuan Lyu wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
>
> memblock_reserve() does not distinguish memory used by firmware from memory
> used by kernel.
>
> The distinction is nice to have for accounting of early memory allocations
> and reservations, but it is essential for kexec handover (kho) to know how
> much memory kernel consumes during boot.
>
> Use memblock_reserve_kern() to reserve kernel memory, such as kernel image,
> initrd and setup data.
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
next prev parent reply other threads:[~2025-04-28 22:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-11 5:37 [PATCH v6 00/14] kexec: introduce Kexec HandOver (KHO) Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 01/14] memblock: add MEMBLOCK_RSRV_KERN flag Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 02/14] memblock: Add support for scratch memory Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 03/14] memblock: introduce memmap_init_kho_scratch() Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 04/14] kexec: add Kexec HandOver (KHO) generation helpers Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 05/14] kexec: add KHO parsing support Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 06/14] kexec: enable KHO support for memory preservation Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 07/14] kexec: add KHO support to kexec file loads Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 08/14] kexec: add config option for KHO Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 09/14] arm64: add KHO support Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 10/14] x86/setup: use memblock_reserve_kern for memory used by kernel Changyuan Lyu
2025-04-28 22:15 ` Dave Hansen [this message]
2025-04-11 5:37 ` [PATCH v6 11/14] x86: add KHO support Changyuan Lyu
2025-04-28 22:05 ` Dave Hansen
2025-04-29 8:06 ` Mike Rapoport
2025-04-29 16:06 ` Dave Hansen
2025-04-29 16:32 ` Mike Rapoport
2025-04-29 15:53 ` Mike Rapoport
2025-04-29 16:05 ` Dave Hansen
2025-04-29 16:34 ` Mike Rapoport
2025-04-11 5:37 ` [PATCH v6 12/14] memblock: add KHO support for reserve_mem Changyuan Lyu
2025-04-22 13:31 ` Mike Rapoport
2025-04-24 8:32 ` Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 13/14] Documentation: add documentation for KHO Changyuan Lyu
2025-04-11 5:37 ` [PATCH v6 14/14] Documentation: KHO: Add memblock bindings Changyuan Lyu
2025-04-28 22:19 ` [PATCH v6 00/14] kexec: introduce Kexec HandOver (KHO) Dave Hansen
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