| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1242037652.3114.6.camel@localhost.localdomain>
Date: Mon, 11 May 2009 15:57:32 +0530
From: Jaswinder Singh Rajput <jaswinder@...nel.org>
To: Ingo Molnar <mingo@...e.hu>
Cc: mingo@...hat.com, hpa@...or.com, paulus@...ba.org,
linux-kernel@...r.kernel.org, robert.richter@....com,
a.p.zijlstra@...llo.nl, tglx@...utronix.de,
linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perfcounters/core] perf_counter, x86: remove
X86_FEATURE_ARCH_PERFMON flag for AMD cpus
On Mon, 2009-05-11 at 12:02 +0200, Ingo Molnar wrote:
> * Jaswinder Singh Rajput <jaswinder@...nel.org> wrote:
>
> > There is one more way to check performance monitor support for
> > Intel by using IA32_MISC_ENABLE MSR (0x1A0) bit 7 tells whether
> > performance monitoring is available or not.
> >
> > But IA32_MISC_ENABLE MSR (0x1A0) is not available for Pentium and
> > P6.
> >
> > So better I will add new cpufeature for performance monitoring for
> > x86:
> >
> > X86_FEATURE_PERFMON : Performance monitor support
>
> What is the exact wording of IA32_MISC_ENABLE bit 7 in the Intel
> documents?
>
Bit 7: Performance Monitoring Available. (R)
1 = Performance monitoring enabled
0 = Performance monitoring disabled
--
JSR
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists