linux-kernel - Re: [PATCH -v2 0/15] x86: Remove support for TSC-less and CX8-less CPUs

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Message-ID: <ae2478d9-640f-4c42-86ec-31cbe5955a59@intel.com>
Date: Thu, 15 May 2025 07:20:12 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Cc: "Ahmed S . Darwish" <darwi@...utronix.de>,
 Andrew Cooper <andrew.cooper3@...rix.com>, Ard Biesheuvel <ardb@...nel.org>,
 Arnd Bergmann <arnd@...nel.org>, Borislav Petkov <bp@...en8.de>,
 Dave Hansen <dave.hansen@...ux.intel.com>, "H . Peter Anvin"
 <hpa@...or.com>, John Ogness <john.ogness@...utronix.de>,
 Linus Torvalds <torvalds@...ux-foundation.org>,
 Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH -v2 0/15] x86: Remove support for TSC-less and CX8-less
 CPUs

On 5/15/25 01:56, Ingo Molnar wrote:
>  80 files changed, 47 insertions(+), 14117 deletions(-)

Thanks for doing this, Ingo. A lot of this code was sitting off on the
side and not causing _too_ many problems. But that was (I think) mostly
because it was being so lightly used.

I've been using Linux since the late 90's. The oldest systems I ever ran
it on were i586's and they were old at the time.

I suspect this is going to throw a couple more compile issues at us to
fix, that's par for the course on something like this. Ideally, we'd
wait for v6.16-rc1 for applying something of this magnitude. What were
your plans on when to apply it?

In any case:

Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>