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From: hpa@zytor.com
To: peterz@infradead.org,
	Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@kernel.org>, Borislav Petkov <bp@suse.de>,
	Andy Lutomirski <luto@kernel.org>,
	x86@kernel.org, Dave Hansen <dave.hansen@intel.com>,
	Tony Luck <tony.luck@intel.com>,
	Cathy Zhang <cathy.zhang@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Kyung Min Park <kyung.min.park@intel.com>,
	"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
	Sean Christopherson <sean.j.christopherson@intel.com>,
	linux-kernel@vger.kernel.org,
	Ricardo Neri <ricardo.neri@intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	linux-edac@vger.kernel.org
Subject: Re: [PATCH 4/4] x86/cpu: Use SERIALIZE in sync_core() when available
Date: Mon, 27 Jul 2020 05:47:32 -0700
Message-ID: <2A0D15F3-BAF2-47CE-AF5F-DB681793D07D@zytor.com> (raw)
In-Reply-To: <20200727082003.GD119549@hirez.programming.kicks-ass.net>

On July 27, 2020 1:20:03 AM PDT, peterz@infradead.org wrote:
>On Sun, Jul 26, 2020 at 09:31:32PM -0700, Ricardo Neri wrote:
>> +static inline void serialize(void)
>> +{
>> +	asm volatile(".byte 0xf, 0x1, 0xe8");
>> +}
>
>Can we pretty please have a comment with the binutils version that has
>the mnomic? Such that when we increase the required binutils version we
>can grep for this.

It also needs : : : "memory" to be a barrier.
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

  reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200727043132.15082-1-ricardo.neri-calderon@linux.intel.com>
2020-07-27  4:31 ` [PATCH 1/4] x86/cpufeatures: Add enumeration for SERIALIZE instruction Ricardo Neri
2020-07-27  4:31 ` [PATCH 2/4] x86/cpu: Relocate sync_core() to sync_core.h Ricardo Neri
2020-07-27  4:31 ` [PATCH 3/4] x86/cpu: Refactor sync_core() for readability Ricardo Neri
2020-07-27  4:31 ` [PATCH 4/4] x86/cpu: Use SERIALIZE in sync_core() when available Ricardo Neri
2020-07-27  5:55   ` hpa
2020-07-27  6:00     ` hpa
2020-07-27  8:36     ` peterz
2020-07-27 12:49       ` hpa
2020-07-27 13:05         ` peterz
2020-07-27 13:30           ` peterz
2020-07-28  4:41             ` Ricardo Neri
2020-07-28  8:50               ` peterz
2020-07-27 16:27     ` Luck, Tony
2020-07-27  8:20   ` peterz
2020-07-27 12:47     ` hpa [this message]
2020-07-28  0:55       ` Ricardo Neri
2020-07-28  0:36     ` Ricardo Neri
2020-07-27  8:23   ` peterz

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