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From: "H. Peter Anvin" <hpa@zytor.com>
To: Randy Dunlap <rdunlap@infradead.org>, linux-kernel@vger.kernel.org
Cc: Nikolay Borisov <nik.borisov@suse.com>,
	Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org
Subject: Re: [PATCH v2] x86/cpu: drop unused Kconfig symbol X86_P6_NOP
Date: Tue, 6 Jan 2026 19:50:15 -0800	[thread overview]
Message-ID: <e4575fc9-bdfc-44ac-98ca-c0fe600d3cde@zytor.com> (raw)
In-Reply-To: <20260106014708.991447-1-rdunlap@infradead.org>

On 2026-01-05 17:47, Randy Dunlap wrote:
> This symbol was removed in early 2025 but 2 dangling references to it
> were missed. Delete them now.
> 
> It's safe to drop the -mtune=generic32 option since gcc 4.3 doesn't
> cause the problem (see 28f7e66fc1da ("x86: prevent binutils from being
> "smart" and generating NOPLs for us")). Also, Arnd confirmed this with
> gcc-8 and gcc-15.
> 
> Fixes: f388f60ca904 ("x86/cpu: Drop configuration options for early 64-bit CPUs")
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
> ---
> v2: add Reviewed-by Nikolay; add -mtune explanation (Dave, Arnd: thanks);
>     add Cc to HPA;
> 
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: Ingo Molnar <mingo@kernel.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: x86@kernel.org
>

Acked-by: H. Peter Anvin (Intel) <hpa@zytor.com>

	-hpa


      parent reply	other threads:[~2026-01-07  3:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-06  1:47 Randy Dunlap
2026-01-06 17:03 ` [tip: x86/cpu] x86/cpu: Drop " tip-bot2 for Randy Dunlap
2026-01-07  3:50 ` H. Peter Anvin [this message]

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