From: Kevin Brodsky <kevin.brodsky@arm.com>
To: Ryan Roberts <ryan.roberts@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
"David Hildenbrand (Arm)" <david@kernel.org>,
Dev Jain <dev.jain@arm.com>,
Yang Shi <yang@os.amperecomputing.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Jinjiang Tu <tujinjiang@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v2 1/3] arm64: mm: Fix rodata=full block mapping support for realm guests
Date: Mon, 13 Apr 2026 13:47:59 +0200 [thread overview]
Message-ID: <9e47d3a9-e1ae-480b-a202-54d9d72479a2@arm.com> (raw)
In-Reply-To: <20260330161705.3349825-2-ryan.roberts@arm.com>
On 30/03/2026 18:17, Ryan Roberts wrote:
> +bool page_alloc_available __ro_after_init;
> +
> +void __init mem_init(void)
> +{
> + page_alloc_available = true;
I knew I had seen a simpler solution to this: vmemmap_alloc_block() uses
slab_is_available() to tell whether the buddy allocator is available.
AFAICT this becomes true somewhere in kmem_cache_init(), which is called
just after mem_init(). Probably good enough for our purpose?
- Kevin
> + swiotlb_update_mem_attributes();
> +}
next prev parent reply other threads:[~2026-04-13 11:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 16:17 [PATCH v2 0/3] Fix bugs for realm guest plus BBML2_NOABORT Ryan Roberts
2026-03-30 16:17 ` [PATCH v2 1/3] arm64: mm: Fix rodata=full block mapping support for realm guests Ryan Roberts
2026-03-31 14:35 ` Suzuki K Poulose
2026-04-02 20:43 ` Catalin Marinas
2026-04-03 10:31 ` Catalin Marinas
2026-04-07 8:43 ` Ryan Roberts
2026-04-07 9:32 ` Catalin Marinas
2026-04-07 10:13 ` Ryan Roberts
2026-04-07 10:52 ` Catalin Marinas
2026-04-07 13:06 ` Ryan Roberts
2026-04-07 17:37 ` Catalin Marinas
2026-04-09 9:53 ` Kevin Brodsky
2026-04-09 15:20 ` Catalin Marinas
2026-04-09 16:48 ` Yang Shi
2026-04-09 18:33 ` Catalin Marinas
2026-04-09 23:08 ` Yang Shi
2026-04-13 14:57 ` Kevin Brodsky
2026-04-07 8:33 ` Ryan Roberts
2026-04-07 9:19 ` Catalin Marinas
2026-04-07 9:57 ` Suzuki K Poulose
2026-04-07 17:21 ` Catalin Marinas
2026-04-09 9:38 ` Suzuki K Poulose
2026-04-09 14:09 ` Catalin Marinas
2026-04-09 14:18 ` Suzuki K Poulose
2026-04-13 11:47 ` Kevin Brodsky [this message]
2026-03-30 16:17 ` [PATCH v2 2/3] arm64: mm: Handle invalid large leaf mappings correctly Ryan Roberts
2026-03-30 16:17 ` [PATCH v2 3/3] arm64: mm: Remove pmd_sect() and pud_sect() Ryan Roberts
2026-04-02 21:11 ` [PATCH v2 0/3] Fix bugs for realm guest plus BBML2_NOABORT Catalin Marinas
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