From: Yazen Ghannam <yazen.ghannam@amd.com>
To: Lin Wang <wanglin@open-hieco.net>
Cc: Borislav Petkov <bp@alien8.de>,
Mario Limonciello <mario.limonciello@amd.com>,
Pu Wen <puwen@hygon.cn>, Thomas Gleixner <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Tony Luck <tony.luck@intel.com>,
Guenter Roeck <linux@roeck-us.net>,
x86@kernel.org, linux-edac@vger.kernel.org,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 1/7] x86/hygon: Add Family 0x18 DF node enumeration
Date: Sat, 24 Oct 2026 11:15:27 -0400 [thread overview]
Message-ID: <20261024151527.GB1164@yaz-khff2.amd.com> (raw)
In-Reply-To: <20261022074218.667049-2-wanglin@open-hieco.net>
On Thu, Oct 22, 2026 at 03:42:11PM +0800, Lin Wang wrote:
> The AMD node code locates function 3 for node N at PCI slot 0x18 + N.
> Hygon has no equivalent node-index-to-slot mapping: DF F3 devices are
> discovered by PCI ID and the PCI BDF is only an access point.
>
> Enumerate Hygon DF devices by PCI ID and read their identities from DF
> registers. Build a dense node cache with Core and DDR Dies (CDDs) before
> I/O Dies (IODs), providing node counts, identity and PCI function lookups.
>
> Guests may expose a supported CPU model without DF devices. Suppress
> the cache-build warning for -ENODEV in guests; keep other initialization
> errors visible.
>
> The node lookup helpers remain local until Hygon consumers are added.
>
> Signed-off-by: Lin Wang <wanglin@open-hieco.net>
> ---
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Thanks,
Yazen
next prev parent reply other threads:[~2026-10-24 15:15 UTC|newest]
Thread overview: 9+ 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
2026-10-24 15:15 ` Yazen Ghannam [this message]
2026-10-22 7:42 ` [PATCH v8 2/7] x86/hygon: Map CPU NodeIds to DF nodes Lin Wang
2026-10-22 7:42 ` [PATCH v8 3/7] EDAC/amd64: Stop matching Hygon CPUs Lin Wang
2026-10-22 7:42 ` [PATCH v8 4/7] RAS/AMD/ATL: Match AMD CPUs only Lin Wang
2026-10-22 7:42 ` [PATCH v8 5/7] x86/amd_nb: Restrict the northbridge framework to AMD CPUs Lin Wang
2026-10-22 7:42 ` [PATCH v8 6/7] x86/amd_node: Restrict SMN setup " Lin Wang
2026-10-22 7:42 ` [PATCH v8 7/7] x86/hygon: Add Family 0x18 SMN access Lin Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20261024151527.GB1164@yaz-khff2.amd.com \
--to=yazen.ghannam@amd.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=linux-edac@vger.kernel.org \
--cc=linux-hwmon@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=mario.limonciello@amd.com \
--cc=mingo@redhat.com \
--cc=puwen@hygon.cn \
--cc=tglx@kernel.org \
--cc=tony.luck@intel.com \
--cc=wanglin@open-hieco.net \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®