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From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: weidong.han@intel.com, xen-devel@lists.xensource.com,
	JBeulich@novell.com, Tim.Deegan@citrix.com
Subject: xsave=0 workaround needed on 3.2 kernels with Xen 4.1 or Xen-unstable.
Date: Mon, 30 Apr 2012 15:37:13 -0400	[thread overview]
Message-ID: <20120430193713.GA12817@phenom.dumpdata.com> (raw)

I somehow thought that this has been fixed but I've been
getting reports that people are running into this.

What kind of fix do I need the in the kernel? I see this:
 255         xen_cpuid(&ax, &bx, &cx, &dx);
 256 
 257         xsave_mask =
 258                 (1 << (X86_FEATURE_XSAVE % 32)) |
 259                 (1 << (X86_FEATURE_OSXSAVE % 32));
 260 
 261         /* Xen will set CR4.OSXSAVE if supported and not disabled by force */
 262         if ((cx & xsave_mask) != xsave_mask)
 263                 cpuid_leaf1_ecx_mask &= ~xsave_mask; /* disable XSAVE & OSXSAVE */
 264 }

But do I need some other one?

             reply	other threads:[~2012-04-30 19:37 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-30 19:37 Konrad Rzeszutek Wilk [this message]
2012-05-02  9:00 ` xsave=0 workaround needed on 3.2 kernels with Xen 4.1 or Xen-unstable Jan Beulich
2012-05-02 18:42   ` AP
2012-05-03  9:15     ` Jan Beulich
2012-05-03 18:09       ` AP
2012-05-04 19:30         ` AP
2012-05-07  7:15           ` Jan Beulich
2012-05-07 16:07             ` Konrad Rzeszutek Wilk
2012-05-07 22:55             ` Jeremy Fitzhardinge
2012-05-07 23:57             ` AP
2012-05-08  0:08               ` Konrad Rzeszutek Wilk
2012-05-08  0:41                 ` AP
2012-05-08 16:39                   ` Konrad Rzeszutek Wilk
2012-05-08 17:02                     ` Matt Wilson
2012-05-09  0:35                   ` Konrad Rzeszutek Wilk
2012-05-09 13:11                     ` Konrad Rzeszutek Wilk
2012-05-09 13:30                       ` Ian Campbell
2012-05-09 13:34                       ` Jan Beulich
2012-05-09 17:38                         ` Konrad Rzeszutek Wilk
2012-05-10 19:39                           ` Jeff Law
2012-05-10 20:57                             ` Konrad Rzeszutek Wilk
2012-05-11  0:58                               ` Konrad Rzeszutek Wilk
2012-05-11  2:27                                 ` Jeff Law
2012-05-11  8:23                             ` Jan Beulich
2012-05-10 20:15                           ` Jeff Law
2012-05-08  6:25               ` Jan Beulich

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