linux-kernel - Re: [PATCH v2 1/1] x86/rdrand: disable RDSEED on AMD Cyan Skillfish

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Message-ID: <CAHSgyMNvXXbB=jChV=ziCeMhUirFD5XccLEUhyu1kttWbNQ12Q@mail.gmail.com>
Date: Wed, 14 Jan 2026 17:09:02 -0500
From: Travis B <tbangs89@...il.com>
To: Borislav Petkov <bp@...en8.de>
Cc: me@...aill.net, dave.hansen@...ux.intel.com, linux-kernel@...r.kernel.org, 
	mario.limonciello@....com, mingo@...hat.com, tglx@...utronix.de, 
	x86@...nel.org
Subject: Re: [PATCH v2 1/1] x86/rdrand: disable RDSEED on AMD Cyan Skillfish

>It is still important, though, to make sure the user sees this and does not
>use RDSEED for generating random data used in sensitive communication. So
>issuing it at least once but making sure everything sees it.

Also, other places which disable cpu features due to security (such as
incomplete spectre mitigations in BIOS, etc) only use pr_warn at worst.