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From: Andi Kleen <ak@linux.intel.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Vegard Nossum <vegard.nossum@oracle.com>,
	Andi Kleen <andi@firstfloor.org>,
	x86@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling
Date: Mon, 1 Jul 2019 09:41:05 -0700	[thread overview]
Message-ID: <20190701164105.GC31027@tassilo.jf.intel.com> (raw)
In-Reply-To: <20190701121710.vardxktdc63gtcj5@linutronix.de>

> So if it is unlikely to have XSAVE but no FXSR I would suggest to add
> "fpu__xstate_clear_all_cpu_caps()" to nofxsr and behave like "nofxsr
> noxsave".

Thanks for the analysis Sebastian. Makes sense.

This would likely work, but I think I would rather just remove the option.

-Andi

  reply	other threads:[~2019-07-01 16:41 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-05 21:52 Support generic disabling of all XSAVE features Andi Kleen
2017-10-05 21:52 ` [PATCH v8 1/5] x86/xsave: Move xsave initialization to after parsing early parameters Andi Kleen
2017-10-05 21:52 ` [PATCH v8 2/5] x86/cpuid: Add generic table for cpuid dependencies Andi Kleen
2017-10-05 22:41   ` Thomas Gleixner
2017-10-05 23:08     ` Andi Kleen
2017-10-05 23:34     ` Andi Kleen
2017-10-05 21:52 ` [PATCH v8 3/5] x86/cpuid: Make clearcpuid an early param Andi Kleen
2017-10-05 21:52 ` [PATCH v8 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling Andi Kleen
2017-11-11 23:15   ` [v8, " Guenter Roeck
2017-11-12  6:41     ` Andi Kleen
2017-11-14  1:28       ` Andi Kleen
2017-11-14  1:49         ` Guenter Roeck
2017-11-16 19:03           ` Andi Kleen
2017-11-16 22:13             ` Guenter Roeck
2017-11-14  2:33         ` Guenter Roeck
2019-06-29 15:22   ` [PATCH v8 " Vegard Nossum
2019-07-01 12:17     ` Sebastian Andrzej Siewior
2019-07-01 16:41       ` Andi Kleen [this message]
2019-07-01 16:39     ` Andi Kleen
2017-10-05 21:52 ` [PATCH v8 5/5] x86/xsave: Remove the explicit clearing of XSAVE dependend features Andi Kleen

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