From: Kiryl Shutsemau <kirill@shutemov.name>
To: Usama Arif <usamaarif642@gmail.com>
Cc: rppt@kernel.org, Andrew Morton <akpm@linux-foundation.org>,
changyuanl@google.com, graf@amazon.com, leitao@debian.org,
thevlad@meta.com, pratyush@kernel.org,
dave.hansen@linux.intel.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH] mm/memblock: only mark/clear KHO scratch memory when needed
Date: Wed, 26 Nov 2025 10:40:46 +0000 [thread overview]
Message-ID: <md65ppfkqim2kepsx6igvezpcnr4hx3g2dxfdojsgx4rligwfg@u5dejfzmirfc> (raw)
In-Reply-To: <20251126072051.546700-1-usamaarif642@gmail.com>
On Wed, Nov 26, 2025 at 07:20:51AM +0000, Usama Arif wrote:
> @@ -1126,8 +1126,11 @@ int __init_memblock memblock_reserved_mark_noinit(phys_addr_t base, phys_addr_t
> */
> __init int memblock_mark_kho_scratch(phys_addr_t base, phys_addr_t size)
> {
> - return memblock_setclr_flag(&memblock.memory, base, size, 1,
> - MEMBLOCK_KHO_SCRATCH);
> + if (IS_ENABLED(CONFIG_MEMBLOCK_KHO_SCRATCH) && is_kho_boot())
It makes me wounder why CONFIG_MEMBLOCK_KHO_SCRATCH exists? It seems to
be a proxy for CONFIG_KEXEC_HANDOVER which is the only option that
selects it and does it always.
Can we make s/CONFIG_MEMBLOCK_KHO_SCRATCH/CONFIG_KEXEC_HANDOVER/ and
remove IS_ENABLED() from this check? Just is_kho_boot() is enough.
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2025-11-26 10:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-26 7:20 Usama Arif
2025-11-26 10:40 ` Kiryl Shutsemau [this message]
2025-11-26 11:43 ` Usama Arif
2025-11-27 5:05 ` Mike Rapoport
2025-11-27 5:05 ` Mike Rapoport
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