From: Sohil Mehta <sohil.mehta@intel.com>
To: Xin Li <xin@zytor.com>, Jacob Pan <jacob.jun.pan@linux.intel.com>,
"X86 Kernel" <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
Dave Hansen <dave.hansen@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
<linux-perf-users@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi.kleen@intel.com>, Xin Li <xin3.li@intel.com>
Subject: Re: [PATCH v2 1/6] x86/irq: Add enumeration of NMI source reporting CPU feature
Date: Fri, 21 Jun 2024 16:00:47 -0700 [thread overview]
Message-ID: <5c1f24aa-79f0-4142-80b2-f13c41b91d76@intel.com> (raw)
In-Reply-To: <de99f490-8b8d-4ae9-9f87-e0336e563aba@zytor.com>
>> +config X86_NMI_SOURCE
>
> Lets reuse X86_FRED instead of adding another hard config option. See
> below.
>
I mostly agree with the suggestion here but there seems to be a bit of
confusion regarding feature availability and feature activation.
Availability and activation of X86_FEATURE_NMI_SOURCE depends on FRED
but not the other way around.
In other words, CONFIG_X86_NMI_SOURCE would only be useful if someone
wants to disable NMI_SOURCE even if both X86_FEATURE_FRED and
X86_FEATURE_NMI_SOURCE are available on a platform.
This seems unlikely to me. Reusing CONFIG_X86_FRED seems reasonable.
Sohil
next prev parent reply other threads:[~2024-06-21 23:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-11 16:54 Jacob Pan
2024-06-11 16:54 ` [PATCH v2 1/6] x86/irq: Add enumeration of NMI source reporting CPU feature Jacob Pan
2024-06-12 2:32 ` Xin Li
2024-06-12 2:50 ` H. Peter Anvin
2024-06-12 3:04 ` Xin Li
2024-06-21 23:00 ` Sohil Mehta [this message]
2024-06-28 5:00 ` Jacob Pan
2024-06-21 22:23 ` Sohil Mehta
2024-06-21 23:46 ` Jacob Pan
2024-06-22 1:08 ` Sohil Mehta
2024-06-27 22:23 ` Jacob Pan
2024-06-27 23:20 ` Sohil Mehta
2024-06-11 16:54 ` [PATCH v2 2/6] x86/irq: Extend NMI handler registration interface to include source Jacob Pan
2024-06-24 23:16 ` Sohil Mehta
2024-06-28 4:56 ` Jacob Pan
2024-06-11 16:54 ` [PATCH v2 3/6] x86/irq: Factor out common NMI handling code Jacob Pan
2024-06-11 16:54 ` [PATCH v2 4/6] x86/irq: Process nmi sources in NMI handler Jacob Pan
2024-06-11 18:41 ` H. Peter Anvin
2024-06-12 21:54 ` Jacob Pan
2024-06-24 23:38 ` Sohil Mehta
2024-06-24 23:53 ` Sohil Mehta
2024-06-11 16:54 ` [PATCH v2 5/6] perf/x86: Enable NMI source reporting for perfmon Jacob Pan
2024-06-11 19:10 ` H. Peter Anvin
2024-06-12 20:27 ` Jacob Pan
2024-06-11 16:54 ` [PATCH v2 6/6] x86/irq: Enable NMI source on IPIs delivered as NMI Jacob Pan
2024-06-12 2:04 ` Sean Christopherson
2024-06-12 2:55 ` Re: Xin Li
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