From: Chris Wright <chrisw@sous-sol.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
Mikael Pettersson <mikpe@it.uu.se>,
Andi Kleen <andi@firstfloor.org>,
mingo@elte.hu, tglx@linutronix.de, torvalds@linux-foundation.org,
akpm@linux-foundation.org, roland@redhat.com, drepper@redhat.com,
Hongjiu.lu@intel.com, linux-kernel@vger.kernel.org,
arjan@linux.intel.com, rmk+lkml@arm.linux.org.uk, dan@debian.org,
asit.k.mallick@intel.com
Subject: Re: [RFC] x86: xsave/xrstor support, ucontext_t extensions
Date: Thu, 22 May 2008 14:32:06 -0700 [thread overview]
Message-ID: <20080522213201.GF4018@sequoia.sous-sol.org> (raw)
In-Reply-To: <4835DF64.6080104@zytor.com>
* H. Peter Anvin (hpa@zytor.com) wrote:
> Suresh Siddha wrote:
>>
>> hpa, What is the virtualization problem? Are you referring to perf problem?
>> As you noted, regular non-rt signal handlers won't need this cpuid check. It's
>> needed only for those who manually look at non-rt signal frames and interpret it.
>> And also, they can do this check only once and not everytime.
>>
>
> No, relying on CPUID and vdso both have implications for virtualization.
hmm, what implications? cpuid is dealt with already.
next prev parent reply other threads:[~2008-05-22 21:34 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-13 1:10 [RFC] x86: xsave/xrstor support, ucontext_t extensions Suresh Siddha
2008-05-16 13:26 ` Mikael Pettersson
2008-05-18 1:34 ` Suresh Siddha
2008-05-19 14:52 ` Mikael Pettersson
2008-05-19 15:04 ` Andi Kleen
2008-05-19 16:29 ` H. Peter Anvin
2008-05-19 16:57 ` Suresh Siddha
2008-05-19 17:45 ` H. Peter Anvin
2008-05-20 1:57 ` Suresh Siddha
2008-05-20 8:58 ` Mikael Pettersson
2008-05-20 10:01 ` Andi Kleen
2008-05-20 13:19 ` Mikael Pettersson
2008-05-20 14:58 ` H. Peter Anvin
2008-05-20 15:20 ` Mikael Pettersson
2008-05-20 17:53 ` Suresh Siddha
2008-05-20 17:59 ` H. Peter Anvin
2008-05-22 0:28 ` H. Peter Anvin
2008-05-22 0:53 ` Roland McGrath
2008-05-22 1:38 ` H. Peter Anvin
2008-05-22 6:40 ` Roland McGrath
2008-05-22 7:18 ` H. Peter Anvin
2008-05-22 8:49 ` Mikael Pettersson
2008-05-22 8:57 ` Mikael Pettersson
2008-05-22 20:56 ` Suresh Siddha
2008-05-22 21:02 ` H. Peter Anvin
2008-05-22 21:29 ` Suresh Siddha
2008-05-22 21:34 ` H. Peter Anvin
2008-05-22 22:22 ` Mikael Pettersson
2008-05-23 1:48 ` Suresh Siddha
2008-05-23 2:12 ` Roland McGrath
2008-05-23 2:49 ` H. Peter Anvin
2008-05-23 18:09 ` Suresh Siddha
2008-06-06 0:28 ` x86: xsave/xrstor support; " H. Peter Anvin
2008-06-06 20:14 ` Suresh Siddha
2008-06-06 23:03 ` H. Peter Anvin
2008-05-23 2:45 ` [RFC] x86: xsave/xrstor support, " H. Peter Anvin
2008-05-23 11:46 ` Mikael Pettersson
2008-05-23 12:11 ` Andi Kleen
2008-05-22 21:32 ` Chris Wright [this message]
2008-05-22 22:15 ` Mikael Pettersson
2008-05-22 22:29 ` Chris Wright
2008-05-23 0:32 ` H. Peter Anvin
2008-05-23 0:44 ` Chris Wright
2008-05-22 22:36 ` Mikael Pettersson
2008-05-23 0:33 ` H. Peter Anvin
2008-05-23 0:42 ` Suresh Siddha
2008-05-23 1:33 ` Roland McGrath
2008-05-23 16:57 ` H. Peter Anvin
2008-05-23 17:50 ` Suresh Siddha
2008-05-23 2:27 ` H. Peter Anvin
2008-05-20 17:57 ` H. Peter Anvin
2008-05-20 14:55 ` H. Peter Anvin
2008-05-20 15:03 ` Andi Kleen
2008-05-20 20:10 ` Roland McGrath
2008-05-22 0:05 ` H. Peter Anvin
2008-05-22 0:47 ` Roland McGrath
2008-05-22 8:14 ` Andi Kleen
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