From: Pekka Enberg <penberg@kernel.org>
To: Brian Gerst <brgerst@gmail.com>
Cc: hpa@zytor.com, x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 10/11] x86: Remove unnecessary ifdefs from i387 code.
Date: Mon, 30 Aug 2010 14:25:15 +0300 [thread overview]
Message-ID: <4C7B951B.3060007@kernel.org> (raw)
In-Reply-To: <AANLkTimO4xHJ5AwZNjctYRDU6jqrY6mkVfkaG1u_LnTx@mail.gmail.com>
On 8/30/10 2:21 PM, Brian Gerst wrote:
> FXSR is a required feature on 64-bit, therefore cpu_has_fxsr is always
>>> true.
>> Yes, I realize that but it will still read boot_cpu_data at runtime, no?
> Look at cpu_has(). It checks REQUIRED_MASK* if the feature bit is a
> constant, and returns true without testing the actual bit in
> boot_cpu_data for required features.
Right you are, thanks for the explanation!
next prev parent reply other threads:[~2010-08-30 11:25 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-28 16:04 x86: FPU cleanups Brian Gerst
2010-08-28 16:04 ` [PATCH 01/11] x86: Use correct type for %cr4 Brian Gerst
2010-08-29 18:24 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 02/11] x86: Merge fpu_init() Brian Gerst
2010-08-29 18:29 ` Pekka Enberg
2010-08-30 0:44 ` Brian Gerst
2010-08-28 16:04 ` [PATCH 03/11] x86: Merge tolerant_fwait() Brian Gerst
2010-08-29 18:32 ` Pekka Enberg
2010-08-30 0:35 ` Brian Gerst
2010-08-30 5:47 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 04/11] x86: Merge __save_init_fpu() Brian Gerst
2010-08-29 18:33 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 05/11] x86-64: Disable preemption when using TS_USEDFPU Brian Gerst
2010-08-29 18:38 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 06/11] x86-64: Fix %cs value in convert_from_fxsr() Brian Gerst
2010-08-29 18:41 ` Pekka Enberg
2010-08-30 0:25 ` Brian Gerst
2010-08-30 6:44 ` Pekka Enberg
2010-08-30 11:38 ` Brian Gerst
2010-08-28 16:04 ` [PATCH 07/11] x86-64: Simplify constraints for fxsave/fxtstor Brian Gerst
2010-08-29 18:45 ` Pekka Enberg
2010-08-29 23:44 ` Brian Gerst
2010-08-30 5:56 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 08/11] x86-32: Remove math_emulate stub Brian Gerst
2010-08-29 18:47 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 09/11] x86: Merge fpu_save_init() Brian Gerst
2010-08-29 18:54 ` Pekka Enberg
2010-08-28 16:04 ` [PATCH 10/11] x86: Remove unnecessary ifdefs from i387 code Brian Gerst
2010-08-29 19:00 ` Pekka Enberg
2010-08-29 23:38 ` Brian Gerst
2010-08-30 5:44 ` Pekka Enberg
2010-08-30 11:21 ` Brian Gerst
2010-08-30 11:25 ` Pekka Enberg [this message]
2010-08-28 16:04 ` [PATCH 11/11] x86: Remove PSHUFB_XMM5_* macros Brian Gerst
2010-08-29 19:02 ` Pekka Enberg
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