linux-kernel - Re: [PATCH v2] x86/amd: Disable RDSEED on AMD Zen5 because of an error.

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Message-ID: <20251103120319.GAaQiaB3PnMKXfCj3Z@fat_crate.local>
Date: Mon, 3 Nov 2025 13:03:19 +0100
From: Borislav Petkov <bp@...en8.de>
To: Christopher Snowhill <chris@...e54.net>
Cc: "Jason A. Donenfeld" <Jason@...c4.com>,
	Gregory Price <gourry@...rry.net>, x86@...nel.org,
	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
	dave.hansen@...ux.intel.com, hpa@...or.com, peterz@...radead.org,
	mario.limonciello@....com, riel@...riel.com, yazen.ghannam@....com,
	me@...aill.net, kai.huang@...el.com, sandipan.das@....com,
	darwi@...utronix.de, stable@...r.kernel.org
Subject: Re: [PATCH v2] x86/amd: Disable RDSEED on AMD Zen5 because of an
 error.

On Mon, Nov 03, 2025 at 02:22:44AM -0800, Christopher Snowhill wrote:
> Although apparently, the patch does break userspace for any distribution
> building packages with -march=znver4

Care to elaborate?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette