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Date: Sat, 9 Aug 2008 11:54:13 -0700 From: Suresh Siddha <suresh.b.siddha@...el.com> To: Suresh Siddha <suresh.b.siddha@...el.com> Cc: Wolfgang Walter <wolfgang.walter@...m.de>, Herbert Xu <herbert@...dor.apana.org.au>, "H. Peter Anvin" <hpa@...or.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>, "viro@...IV.linux.org.uk" <viro@...iv.linux.org.uk>, "vegard.nossum@...il.com" <vegard.nossum@...il.com> Subject: Re: Kernel oops with 2.6.26, padlock and ipsec: probably problem with fpu state changes On Sat, Aug 09, 2008 at 11:12:19AM -0700, Suresh Siddha wrote: > In this padlock case with the patch, we may encounter a nested > kernel_fpu_begin() and end() > but this is ok, as the padlock is not actually touching fpu/sse registers. I take this back. kernel_fpu_end() is unconditionally doing stts(). So, nesting of kernel_fpu_begin/end() is not ok. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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