From: Ingo Molnar <mingo@kernel.org>
To: Fenghua Yu <fenghua.yu@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
H Peter Anvin <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Dave Hansen <dave.hansen@intel.com>,
Ashok Raj <ashok.raj@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ravi V Shankar <ravi.v.shankar@intel.com>,
Xiaoyao Li <xiaoyao.li@intel.com>,
Christopherson Sean J <sean.j.christopherson@intel.com>,
Kalle Valo <kvalo@codeaurora.org>,
Michael Chan <michael.chan@broadcom.com>,
linux-kernel <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>,
kvm@vger.kernel.org, netdev@vger.kernel.org,
linux-wireless@vger.kernel.org
Subject: Re: [PATCH v8 05/15] x86/msr-index: Define MSR_IA32_CORE_CAPABILITY and split lock detection bit
Date: Thu, 25 Apr 2019 07:45:11 +0200 [thread overview]
Message-ID: <20190425054511.GA40105@gmail.com> (raw)
In-Reply-To: <1556134382-58814-6-git-send-email-fenghua.yu@intel.com>
* Fenghua Yu <fenghua.yu@intel.com> wrote:
> A new MSR_IA32_CORE_CAPABILITY (0xcf) is defined. Each bit in the MSR
> enumerates a model specific feature. Currently bit 5 enumerates split
> lock detection. When bit 5 is 1, split lock detection is supported.
> When the bit is 0, split lock detection is not supported.
>
> Please check the latest Intel 64 and IA-32 Architectures Software
> Developer's Manual for more detailed information on the MSR and the
> split lock detection bit.
>
> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
> ---
> arch/x86/include/asm/msr-index.h | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
> index ca5bc0eacb95..f65ef6f783d2 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -59,6 +59,9 @@
> #define MSR_PLATFORM_INFO_CPUID_FAULT_BIT 31
> #define MSR_PLATFORM_INFO_CPUID_FAULT BIT_ULL(MSR_PLATFORM_INFO_CPUID_FAULT_BIT)
>
> +#define MSR_IA32_CORE_CAPABILITY 0x000000cf
> +#define CORE_CAP_SPLIT_LOCK_DETECT BIT(5) /* Detect split lock */
Please don't put comments into definitions.
Thanks,
Ingo
next prev parent reply other threads:[~2019-04-25 5:45 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-24 19:32 [PATCH v8 00/15] x86/split_lock: Enable split lock detection Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 01/15] x86/common: Align cpu_caps_cleared and cpu_caps_set to unsigned long Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 02/15] drivers/net/b44: Align pwol_mask to unsigned long for better performance Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 03/15] wlcore: simplify/fix/optimize reg_ch_conf_pending operations Fenghua Yu
2019-04-25 17:12 ` Kalle Valo
2019-04-24 19:32 ` [PATCH v8 04/15] x86/split_lock: Align x86_capability to unsigned long to avoid split locked access Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 05/15] x86/msr-index: Define MSR_IA32_CORE_CAPABILITY and split lock detection bit Fenghua Yu
2019-04-25 5:45 ` Ingo Molnar [this message]
2019-04-25 19:01 ` Fenghua Yu
2019-04-25 19:47 ` Ingo Molnar
2019-04-25 19:51 ` Fenghua Yu
2019-04-25 20:08 ` Ingo Molnar
2019-04-25 20:22 ` Fenghua Yu
2019-04-26 6:00 ` Ingo Molnar
2019-05-06 0:12 ` Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 06/15] x86/cpufeatures: Enumerate MSR_IA32_CORE_CAPABILITY Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 07/15] x86/split_lock: Enumerate split lock detection by MSR_IA32_CORE_CAPABILITY Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 08/15] x86/split_lock: Enumerate split lock detection on Icelake mobile processor Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 09/15] x86/split_lock: Define MSR TEST_CTL register Fenghua Yu
2019-04-25 6:21 ` Ingo Molnar
2019-04-25 19:48 ` Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 10/15] x86/split_lock: Handle #AC exception for split lock Fenghua Yu
2019-04-25 6:07 ` Ingo Molnar
2019-04-25 7:29 ` Thomas Gleixner
2019-04-24 19:32 ` [PATCH v8 11/15] kvm/x86: Emulate MSR IA32_CORE_CAPABILITY Fenghua Yu
2019-04-24 19:32 ` [PATCH v8 12/15] kvm/vmx: Emulate MSR TEST_CTL Fenghua Yu
2019-04-25 7:42 ` Thomas Gleixner
2019-04-27 12:20 ` Xiaoyao Li
2019-04-28 7:09 ` Thomas Gleixner
2019-04-28 7:34 ` Xiaoyao Li
2019-04-29 7:31 ` Thomas Gleixner
2019-04-29 5:21 ` Xiaoyao Li
2019-04-24 19:33 ` [PATCH v8 13/15] x86/split_lock: Enable split lock detection by default Fenghua Yu
2019-04-25 7:50 ` Thomas Gleixner
2019-05-06 21:39 ` Fenghua Yu
2019-04-25 10:52 ` David Laight
2019-04-25 10:58 ` Thomas Gleixner
2019-04-25 11:13 ` David Laight
2019-04-25 11:41 ` Peter Zijlstra
2019-04-25 13:04 ` Thomas Gleixner
2019-05-07 20:48 ` Fenghua Yu
2019-04-24 19:33 ` [PATCH v8 14/15] x86/split_lock: Disable split lock detection by kernel parameter "nosplit_lock_detect" Fenghua Yu
2019-04-24 19:33 ` [PATCH v8 15/15] x86/split_lock: Add a sysfs interface to enable/disable split lock detection during run time Fenghua Yu
2019-04-25 6:31 ` Ingo Molnar
2019-05-06 0:21 ` Fenghua Yu
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