linux-kernel - Re: [PATCH v4 09/10] x86/xsaves: Fix xstate_offsets, xstate

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Message-ID: <20160429220729.GA15679@test-lenovo>
Date:	Fri, 29 Apr 2016 15:07:29 -0700
From:	Yu-cheng Yu <yu-cheng.yu@...el.com>
To:	Dave Hansen <dave.hansen@...ux.intel.com>
Cc:	x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	Andy Lutomirski <luto@...nel.org>,
	Borislav Petkov <bp@...e.de>,
	Sai Praneeth Prakhya <sai.praneeth.prakhya@...el.com>,
	"Ravi V. Shankar" <ravi.v.shankar@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [PATCH v4 09/10] x86/xsaves: Fix xstate_offsets, xstate_sizes
 for legacy components

On Fri, Apr 29, 2016 at 01:28:31PM -0700, Dave Hansen wrote:
> On 03/04/2016 10:12 AM, Yu-cheng Yu wrote:
> > The arrays xstate_offsets[] and xstate_sizes[] record XSAVE area 
> > offsets and sizes. Values for legacy components i387 and XMMs were
> > not initialized. Fix it.
> 
> Is this just a completeness thing or does it actually break something?

PTRACE format conversion needs them.