From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Smita Koralahalli Channabasappa
<smita.koralahallichannabasappa@amd.com>,
Wei Huang <wei.huang2@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
patches@lists.linux.dev
Subject: Re: [PATCH v2 6/6] topology/sysfs: Add PPIN in sysfs under cpu topology
Date: Mon, 31 Jan 2022 12:35:10 +0100 [thread overview]
Message-ID: <YffJbnO5uyYptFAd@kroah.com> (raw)
In-Reply-To: <20220121174743.1875294-7-tony.luck@intel.com>
On Fri, Jan 21, 2022 at 09:47:43AM -0800, Tony Luck wrote:
> PPIN is the Protected Processor Identification Number.
> This is used to identify the socket as a Field Replaceable Unit (FRU).
>
> Existing code only displays this when reporting errors. But this makes
> it inconvenient for large clusters to use it for its intended purpose
> of inventory control.
>
> Add ppin to /sys/devices/system/cpu/cpu*/topology to make what
> is already available using RDMSR more easily accessible. Make
> the file read only for root in case there are still people
> concerned about making a unique system "serial number" available.
>
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---
> Documentation/ABI/stable/sysfs-devices-system-cpu | 4 ++++
> Documentation/ABI/testing/sysfs-devices-system-cpu | 6 ++++++
> arch/x86/include/asm/topology.h | 1 +
> drivers/base/topology.c | 4 ++++
> include/linux/topology.h | 3 +++
> 5 files changed, 18 insertions(+)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2022-01-31 11:35 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-07 22:54 [PATCH 0/5] PPIN (Protected Processor Inventory Number) updates Tony Luck
2022-01-07 22:54 ` [PATCH 1/5] x86/ras: Merge Intel and AMD ppin_init() functions Tony Luck
2022-01-18 20:02 ` Borislav Petkov
2022-01-18 21:03 ` Luck, Tony
2022-01-18 21:15 ` Borislav Petkov
2022-01-07 22:54 ` [PATCH 2/5] x86/ras: X86_FEATURE_INTEL_PPIN finally has a CPUID bit Tony Luck
2022-01-20 13:32 ` Borislav Petkov
2022-01-07 22:54 ` [PATCH 3/5] x86/ras: Read/save PPIN MSR during initialization Tony Luck
2022-01-07 22:54 ` [PATCH 4/5] x86/sysfs: Add format parameter to macro defining "show" functions for proc Tony Luck
2022-01-20 13:32 ` Borislav Petkov
2022-01-07 22:54 ` [PATCH 5/5] x86/sysfs: Add PPIN in sysfs under cpu topology Tony Luck
2022-01-20 13:35 ` Borislav Petkov
2022-01-20 18:01 ` Luck, Tony
2022-01-20 22:48 ` Borislav Petkov
2022-01-21 17:47 ` [PATCH v2 0/6] PPIN (Protected Processor Inventory Number) updates Tony Luck
2022-01-21 17:47 ` [PATCH v2 1/6] x86/cpu: Add Xeon Icelake-D to list of CPUs that support PPIN Tony Luck
2022-01-25 17:55 ` [tip: x86/urgent] " tip-bot2 for Tony Luck
2022-01-21 17:47 ` [PATCH v2 2/6] x86/cpu: Merge Intel and AMD ppin_init() functions Tony Luck
2022-01-27 10:22 ` Borislav Petkov
2022-01-27 16:52 ` Luck, Tony
2022-01-21 17:47 ` [PATCH v2 3/6] x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit Tony Luck
2022-01-21 17:47 ` [PATCH v2 4/6] x86/cpu: Read/save PPIN MSR during initialization Tony Luck
2022-01-21 17:47 ` [PATCH v2 5/6] topology/sysfs: Add format parameter to macro defining "show" functions for proc Tony Luck
2022-01-31 11:34 ` Greg Kroah-Hartman
2022-01-21 17:47 ` [PATCH v2 6/6] topology/sysfs: Add PPIN in sysfs under cpu topology Tony Luck
2022-01-31 11:35 ` Greg Kroah-Hartman [this message]
2022-01-31 12:31 ` [PATCH v2 0/6] PPIN (Protected Processor Inventory Number) updates Borislav Petkov
2022-01-31 17:23 ` Luck, Tony
2022-01-31 18:18 ` Borislav Petkov
2022-01-31 18:49 ` Luck, Tony
2022-01-31 19:10 ` Borislav Petkov
2022-01-31 19:29 ` Luck, Tony
2022-01-31 21:58 ` Borislav Petkov
2022-01-31 22:03 ` Luck, Tony
2022-04-06 22:01 ` [PATCH] topology/sysfs: Hide PPIN on systems that do not support it Tony Luck
2022-04-25 22:46 ` Andrew Morton
2022-04-25 22:56 ` Luck, Tony
2022-01-31 23:01 ` [PATCH v3 0/5] PPIN (Protected Processor Inventory Number) updates Tony Luck
2022-01-31 23:01 ` [PATCH v3 1/5] x86/cpu: Merge Intel and AMD ppin_init() functions Tony Luck
2022-02-02 6:31 ` [tip: x86/cpu] " tip-bot2 for Tony Luck
2022-01-31 23:01 ` [PATCH v3 2/5] x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit Tony Luck
2022-02-02 6:31 ` [tip: x86/cpu] " tip-bot2 for Tony Luck
2022-01-31 23:01 ` [PATCH v3 3/5] x86/cpu: Read/save PPIN MSR during initialization Tony Luck
2022-02-02 6:31 ` [tip: x86/cpu] " tip-bot2 for Tony Luck
2022-01-31 23:01 ` [PATCH v3 4/5] topology/sysfs: Add format parameter to macro defining "show" functions for proc Tony Luck
2022-02-02 6:31 ` [tip: x86/cpu] " tip-bot2 for Tony Luck
2022-01-31 23:01 ` [PATCH v3 5/5] topology/sysfs: Add PPIN in sysfs under cpu topology Tony Luck
2022-02-02 6:31 ` [tip: x86/cpu] " tip-bot2 for Tony Luck
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