From: Dave Hansen <dave.hansen@intel.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: "Reshetova, Elena" <elena.reshetova@intel.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"x86@kernel.org" <x86@kernel.org>, Theodore Ts'o <tytso@mit.edu>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
"Kalra, Ashish" <ashish.kalra@amd.com>,
Sean Christopherson <seanjc@google.com>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] x86/random: Issue a warning if RDRAND or RDSEED fails
Date: Tue, 30 Jan 2024 09:58:09 -0800 [thread overview]
Message-ID: <a076974c-e2c7-43c9-9858-71c913361cea@intel.com> (raw)
In-Reply-To: <CAHmME9oSQbd3V8+qR0e9oPb7ppO=E7GrCW-a2RN8QNdY_ARbSQ@mail.gmail.com>
On 1/30/24 09:49, Jason A. Donenfeld wrote:
>> Anybody disagree?
> Yes, I disagree. I made a trivial test that shows RDSEED breaks easily
> in a busy loop. So at the very least, your statement holds true only
> for RDRAND.
Well, darn. :)
Any chance you could share some more information about the environment
where you're seeing this? It'd be good to reconcile what you're seeing
with how the hardware is expected to behave.
next prev parent reply other threads:[~2024-01-30 17:58 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-30 8:30 [PATCH 1/2] x86/random: Retry on RDSEED failure Kirill A. Shutemov
2024-01-30 8:30 ` [PATCH 2/2] x86/random: Issue a warning if RDRAND or RDSEED fails Kirill A. Shutemov
2024-01-30 12:37 ` Jason A. Donenfeld
2024-01-30 13:45 ` Reshetova, Elena
2024-01-30 14:21 ` Jason A. Donenfeld
2024-01-30 14:55 ` Reshetova, Elena
2024-01-30 15:00 ` Jason A. Donenfeld
2024-01-30 17:31 ` Dave Hansen
2024-01-30 17:49 ` Jason A. Donenfeld
2024-01-30 17:58 ` Dave Hansen [this message]
2024-01-30 18:15 ` H. Peter Anvin
2024-01-30 18:23 ` Jason A. Donenfeld
2024-01-30 18:23 ` Jason A. Donenfeld
2024-01-30 18:37 ` Dave Hansen
2024-01-30 18:05 ` Daniel P. Berrangé
2024-01-30 18:24 ` Jason A. Donenfeld
2024-01-30 18:31 ` Jason A. Donenfeld
2024-01-30 18:40 ` H. Peter Anvin
2024-01-31 8:16 ` Reshetova, Elena
2024-01-31 11:59 ` Dr. Greg
2024-01-31 13:06 ` Jason A. Donenfeld
2024-01-31 18:02 ` Reshetova, Elena
2024-01-31 20:35 ` Dr. Greg
2024-02-01 4:47 ` Theodore Ts'o
2024-02-01 9:54 ` Dr. Greg
2024-02-01 11:08 ` Daniel P. Berrangé
2024-02-01 21:04 ` Dr. Greg
2024-02-02 7:56 ` Reshetova, Elena
2024-02-01 7:26 ` Reshetova, Elena
2024-02-01 10:52 ` Dr. Greg
2024-02-06 1:12 ` Dr. Greg
2024-02-06 8:04 ` Daniel P. Berrangé
2024-02-06 12:04 ` Dr. Greg
2024-02-06 13:00 ` Daniel P. Berrangé
2024-02-08 10:31 ` Dr. Greg
2024-02-06 13:50 ` Daniel P. Berrangé
2024-02-06 15:35 ` Borislav Petkov
2024-02-08 11:44 ` Dr. Greg
2024-02-09 17:31 ` Borislav Petkov
2024-02-09 19:49 ` Jason A. Donenfeld
2024-02-09 20:37 ` Dave Hansen
2024-02-09 21:45 ` Borislav Petkov
2024-02-06 18:49 ` H. Peter Anvin
2024-02-08 16:38 ` Dr. Greg
2024-01-30 15:50 ` Kuppuswamy Sathyanarayanan
2024-01-30 12:29 ` [PATCH 1/2] x86/random: Retry on RDSEED failure Jason A. Donenfeld
2024-01-30 12:51 ` Jason A. Donenfeld
2024-01-30 13:10 ` Reshetova, Elena
2024-01-30 14:06 ` Jason A. Donenfeld
2024-01-30 14:43 ` Daniel P. Berrangé
2024-01-30 15:12 ` Jason A. Donenfeld
2024-01-30 18:35 ` Jason A. Donenfeld
2024-01-30 19:06 ` Reshetova, Elena
2024-01-30 19:16 ` Jason A. Donenfeld
2024-01-31 7:56 ` Reshetova, Elena
2024-01-31 13:14 ` Jason A. Donenfeld
2024-01-31 14:07 ` Theodore Ts'o
2024-01-31 14:45 ` Jason A. Donenfeld
2024-01-31 14:52 ` Jason A. Donenfeld
2024-01-31 17:10 ` Theodore Ts'o
2024-01-31 17:37 ` Reshetova, Elena
2024-01-31 18:01 ` Jason A. Donenfeld
2024-02-01 4:57 ` Theodore Ts'o
2024-02-01 18:09 ` Jason A. Donenfeld
2024-02-01 18:46 ` Dave Hansen
2024-02-01 19:02 ` H. Peter Anvin
2024-02-02 7:25 ` Reshetova, Elena
2024-02-02 15:39 ` Theodore Ts'o
2024-02-03 10:12 ` Jason A. Donenfeld
2024-02-09 19:53 ` Jason A. Donenfeld
2024-02-12 8:25 ` Reshetova, Elena
2024-02-12 16:32 ` Theodore Ts'o
2024-02-13 7:28 ` Dan Williams
2024-02-13 23:13 ` Theodore Ts'o
2024-02-14 0:53 ` Dan Williams
2024-02-14 4:32 ` Theodore Ts'o
2024-02-14 6:48 ` Dan Williams
2024-02-14 6:54 ` Reshetova, Elena
2024-02-14 8:34 ` Nikolay Borisov
2024-02-14 9:34 ` Dr. Greg
2024-02-14 17:30 ` Jason A. Donenfeld
2024-02-14 15:18 ` Reshetova, Elena
2024-02-14 17:21 ` Jason A. Donenfeld
2024-02-14 17:59 ` Reshetova, Elena
2024-02-14 19:32 ` Jason A. Donenfeld
2024-02-15 7:07 ` Reshetova, Elena
2024-02-15 12:58 ` Jason A. Donenfeld
2024-02-14 19:46 ` Tom Lendacky
2024-02-14 20:04 ` Jason A. Donenfeld
2024-02-14 20:11 ` Theodore Ts'o
2024-02-15 13:01 ` Jason A. Donenfeld
2024-02-14 20:14 ` Dave Hansen
2024-02-02 15:47 ` James Bottomley
2024-02-02 16:05 ` Theodore Ts'o
2024-02-02 21:28 ` James Bottomley
2024-02-03 14:35 ` Theodore Ts'o
2024-02-06 19:12 ` H. Peter Anvin
2024-01-30 15:20 ` H. Peter Anvin
2024-01-30 15:44 ` Kuppuswamy Sathyanarayanan
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