From: "H. Peter Anvin" <hpa@zytor.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ramkumar Ramachandra <artagnon@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@linux.intel.com>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Eli Friedman <eli.friedman@gmail.com>,
Jim Grosbach <grosbach@apple.com>,
Stephen Checkoway <s@pahtak.org>, LLVMdev <llvmdev@cs.uiuc.edu>
Subject: Re: [PATCH] x86/asm: avoid mnemonics without type suffix
Date: Mon, 15 Jul 2013 11:40:52 -0700 [thread overview]
Message-ID: <51E44234.5060300@zytor.com> (raw)
In-Reply-To: <51E2FACA.3050801@goop.org>
On 07/14/2013 12:23 PM, Jeremy Fitzhardinge wrote:
> The SDM entry for BT mentions that the instruction may touch 2 or 4
> bytes depending on the operand size, but doesn't specifically mention
> that a 64 bit operation size touches 8 bytes - and it doesn't mention
> anything at all about operand size and access size in BTR/BTS/BTC
> (unless it's implied as part of the discussion about encoding the MSBs
> of a constant bit offset in the offset of the addressing mode). Is that
> an oversight?
Most likely. I'll check with the people responsible for the SDM here at
Intel.
-hpa
next prev parent reply other threads:[~2013-07-15 18:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-14 12:56 [PATCH] x86/asm: avoid mnemonics without type suffix Ramkumar Ramachandra
2013-07-14 17:19 ` Linus Torvalds
2013-07-14 18:26 ` Ramkumar Ramachandra
2013-07-14 18:34 ` Linus Torvalds
2013-07-14 18:49 ` Ramkumar Ramachandra
2013-07-14 18:35 ` [LLVMdev] " Tim Northover
2013-07-14 19:09 ` Linus Torvalds
2013-07-14 19:30 ` Tim Northover
2013-07-14 19:41 ` Jeremy Fitzhardinge
2013-07-14 19:49 ` Linus Torvalds
2013-07-15 18:40 ` H. Peter Anvin
2013-07-15 18:56 ` Linus Torvalds
2013-07-15 19:00 ` H. Peter Anvin
2013-07-15 19:00 ` Linus Torvalds
2013-07-14 19:23 ` Jeremy Fitzhardinge
2013-07-14 19:29 ` Linus Torvalds
2013-07-15 18:40 ` H. Peter Anvin [this message]
2013-07-14 19:23 ` Jeremy Fitzhardinge
2013-07-14 21:14 ` Andi Kleen
2013-07-15 18:42 ` H. Peter Anvin
2013-07-15 18:47 ` H. Peter Anvin
2013-07-15 18:58 ` Linus Torvalds
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