From: sashiko-bot@kernel.org
To: "Lin Wang" <wanglin@open-hieco.net>
Cc: linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v8 5/7] x86/amd_nb: Restrict the northbridge framework to AMD CPUs
Date: Thu, 22 Oct 2026 07:48:04 +0000 [thread overview]
Message-ID: <sashiko-outbox-181134@kernel.org> (raw)
In-Reply-To: <20261022074218.667049-6-wanglin@open-hieco.net>
> The AMD northbridge cache previously discovered Hygon F3 devices by PCI
> ID. It now derives the node count from CPU topology and locates node
> functions at fixed PCI slots. Hygon DF devices do not follow that
> layout, so the Hygon branch no longer builds a usable cache.
>
> amd64_edac and ATL no longer use this cache on Hygon. Restrict
> northbridge initialization and the early northbridge check to AMD CPUs.
> Keep amd_get_mmconfig_range() available on Hygon because it reads the
> MMCONFIG MSR without using the northbridge cache.
>
> Signed-off-by: Lin Wang <wanglin@open-hieco.net>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261022074218.667049-1-wanglin@open-hieco.net?part=5
next prev parent reply other threads:[~2026-10-22 7:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-22 7:42 [PATCH v8 0/7] x86/hygon: Add Family 0x18 DF node enumeration and SMN access Lin Wang
2026-10-22 7:42 ` [PATCH v8 1/7] x86/hygon: Add Family 0x18 DF node enumeration Lin Wang
2026-10-22 7:49 ` sashiko-bot
2026-10-24 15:15 ` Yazen Ghannam
2026-10-22 7:42 ` [PATCH v8 2/7] x86/hygon: Map CPU NodeIds to DF nodes Lin Wang
2026-10-22 7:56 ` sashiko-bot
2026-10-22 7:42 ` [PATCH v8 3/7] EDAC/amd64: Stop matching Hygon CPUs Lin Wang
2026-10-22 7:45 ` sashiko-bot
2026-10-22 7:42 ` [PATCH v8 4/7] RAS/AMD/ATL: Match AMD CPUs only Lin Wang
2026-10-22 7:46 ` sashiko-bot
2026-10-22 7:42 ` [PATCH v8 5/7] x86/amd_nb: Restrict the northbridge framework to AMD CPUs Lin Wang
2026-10-22 7:48 ` sashiko-bot [this message]
2026-10-22 7:42 ` [PATCH v8 6/7] x86/amd_node: Restrict SMN setup " Lin Wang
2026-10-22 7:49 ` sashiko-bot
2026-10-22 7:42 ` [PATCH v8 7/7] x86/hygon: Add Family 0x18 SMN access Lin Wang
2026-10-22 7:52 ` sashiko-bot
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