From: Thomas Gleixner <tglx@linutronix.de>
To: Andi Kleen <andi@firstfloor.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v9 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling
Date: Sun, 8 Oct 2017 10:34:25 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1710081034140.1922@nanos> (raw)
In-Reply-To: <20171007000328.12843-5-andi@firstfloor.org>
On Fri, 6 Oct 2017, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
>
> Before enabling XSAVE, not only check the XSAVE specific CPUID bits,
> but also the base CPUID features of the respective XSAVE feature.
> This allows to disable individual XSAVE states using the existing
> clearcpuid= option, which can be useful for performance testing
> and debugging, and also in general avoids inconsistencies.
>
> v2:
> Add curly brackets (Thomas Gleixner)
> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
next prev parent reply other threads:[~2017-10-08 8:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-07 0:03 Support generic disabling of all XSAVE features Andi Kleen
2017-10-07 0:03 ` [PATCH v9 1/5] x86/xsave: Move xsave initialization to after parsing early parameters Andi Kleen
2017-10-12 7:18 ` Ingo Molnar
2017-10-07 0:03 ` [PATCH v9 2/5] x86/cpuid: Add generic table for cpuid dependencies Andi Kleen
2017-10-08 8:35 ` Thomas Gleixner
2017-10-12 8:07 ` Ingo Molnar
2017-10-12 8:16 ` Ingo Molnar
2017-10-13 17:46 ` Andi Kleen
2017-10-12 15:13 ` Thomas Gleixner
2017-10-12 22:01 ` Andi Kleen
2017-10-13 5:30 ` Ingo Molnar
2017-10-13 16:36 ` Andi Kleen
2017-10-12 22:12 ` Andi Kleen
2017-10-07 0:03 ` [PATCH v9 3/5] x86/cpuid: Make clearcpuid an early param Andi Kleen
2017-10-12 8:09 ` Ingo Molnar
2017-10-07 0:03 ` [PATCH v9 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling Andi Kleen
2017-10-08 8:34 ` Thomas Gleixner [this message]
2017-10-12 8:11 ` Ingo Molnar
2017-10-13 17:48 ` Andi Kleen
2017-10-07 0:03 ` [PATCH v9 5/5] x86/xsave: Remove the explicit clearing of XSAVE dependend features Andi Kleen
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