From: Thomas Gleixner <tglx@linutronix.de>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@linuxfoundation.org>,
Dave Hansen <dave.hansen@intel.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Andi Kleen <ak@linux.intel.com>,
Arjan Van De Ven <arjan.van.de.ven@intel.com>,
David Woodhouse <dwmw@amazon.co.uk>,
Peter Zijlstra <peterz@infradead.org>,
Dan Williams <dan.j.williams@intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Ashok Raj <ashok.raj@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/5] x86/enter: Create macros to set/clear IBRS
Date: Thu, 11 Jan 2018 17:04:21 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1801111639290.2091@nanos> (raw)
In-Reply-To: <3aab341725ee6a9aafd3141387453b45d788d61a.1515542293.git.tim.c.chen@linux.intel.com>
On Tue, 9 Jan 2018, Tim Chen wrote:
> +
> +.macro WRMSR_ASM msr_nr:req edx_val:req eax_val:req
> + movl \msr_nr, %ecx
> + movl \edx_val, %edx
> + movl \eax_val, %eax
> +.endm
This is the most brilliant piece of useless code I've seen in a long time.
tglx
next prev parent reply other threads:[~2018-01-11 16:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-10 2:26 [PATCH v3 0/5] IBRS patch series Tim Chen
2018-01-10 2:26 ` [PATCH v3 1/5] x86/feature: Detect the x86 IBRS feature to control Speculation Tim Chen
2018-01-10 2:26 ` [PATCH v3 2/5] x86/enter: Create macros to set/clear IBRS Tim Chen
2018-01-11 16:04 ` Thomas Gleixner [this message]
2018-01-11 21:05 ` Tim Chen
2018-01-11 21:24 ` Tim Chen
2018-01-10 2:26 ` [PATCH v3 3/5] x86/enter: Use IBRS on syscall and interrupts Tim Chen
2018-01-10 10:04 ` Peter Zijlstra
2018-01-10 11:27 ` Paolo Bonzini
2018-01-10 18:16 ` Tim Chen
2018-01-10 18:28 ` Peter Zijlstra
2018-01-10 18:44 ` Tim Chen
2018-01-10 18:47 ` Van De Ven, Arjan
2018-01-11 12:45 ` Woodhouse, David
2018-01-10 2:26 ` [PATCH v3 4/5] x86/ibrs: Create boot option for IBRS Tim Chen
2018-01-10 2:26 ` [PATCH v3 5/5] x86/idle: Disable IBRS entering idle and enable it on wakeup Tim Chen
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