From: Dave Hansen <dave.hansen@intel.com>
To: Sohil Mehta <sohil.mehta@intel.com>,
x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Ard Biesheuvel <ardb@kernel.org>,
"Nikunj A. Dadhania" <nikunj@amd.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"Kirill A . Shutemov" <kas@kernel.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Tony Luck <tony.luck@intel.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org
Subject: Re: [PATCH v2 1/3] x86/cpu: Defer LASS enabling until userspace comes up
Date: Tue, 3 Mar 2026 09:41:24 -0800 [thread overview]
Message-ID: <f9e4ef3f-2844-481c-82d6-03f7347b11f3@intel.com> (raw)
In-Reply-To: <ee807044-42f7-4fe5-9304-588a93a24656@intel.com>
On 2/19/26 13:02, Sohil Mehta wrote:
> The current patch
> https://lore.kernel.org/lkml/1bc0b798-9cef-4dfd-af06-7674b699af1b@intel.com/
>
> ..to defer CR pinning enforcement until CPU online makes sense for the
> FRED fix. Eventually, I am thinking we can defer CR pinning even further
> until userspace comes up.
>
> setup_cr_pinning(), which enables the static key, can be moved to a
> late_initcall() such as above. The cpu_online() check to enforce CR
> pinning would still be needed to make it play nice with CPU hotplug.
>
> Do you see an issue with that approach?
Seems fine to me.
next prev parent reply other threads:[~2026-03-03 17:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-20 23:47 [PATCH v2 0/3] x86: Extend LASS support to EFI configurations Sohil Mehta
2026-01-20 23:47 ` [PATCH v2 1/3] x86/cpu: Defer LASS enabling until userspace comes up Sohil Mehta
2026-02-19 21:02 ` Sohil Mehta
2026-03-03 17:41 ` Dave Hansen [this message]
2026-03-03 23:59 ` [tip: x86/cpu] " tip-bot2 for Sohil Mehta
2026-01-20 23:47 ` [PATCH v2 2/3] x86/efi: Disable LASS while executing runtime services Sohil Mehta
2026-03-03 23:59 ` [tip: x86/cpu] " tip-bot2 for Sohil Mehta
2026-01-20 23:47 ` [PATCH v2 3/3] x86/cpu: Remove LASS restriction on EFI Sohil Mehta
2026-03-03 23:59 ` [tip: x86/cpu] " tip-bot2 for Sohil Mehta
2026-02-04 17:08 ` [PATCH v2 0/3] x86: Extend LASS support to EFI configurations Maciej Wieczor-Retman
2026-02-05 17:47 ` Luck, Tony
2026-02-24 18:45 ` Sohil Mehta
2026-02-24 18:49 ` Ard Biesheuvel
2026-03-03 17:42 ` Dave Hansen
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