From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760275AbcDMLlI (ORCPT ); Wed, 13 Apr 2016 07:41:08 -0400 Received: from terminus.zytor.com ([198.137.202.10]:56492 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760261AbcDMLlC (ORCPT ); Wed, 13 Apr 2016 07:41:02 -0400 Date: Wed, 13 Apr 2016 04:39:49 -0700 From: tip-bot for Borislav Petkov Message-ID: Cc: tglx@linutronix.de, peterz@infradead.org, mingo@kernel.org, luto@amacapital.net, brgerst@gmail.com, bp@alien8.de, hpa@zytor.com, bp@suse.de, linux-kernel@vger.kernel.org, dvlasenk@redhat.com, torvalds@linux-foundation.org Reply-To: peterz@infradead.org, mingo@kernel.org, tglx@linutronix.de, luto@amacapital.net, hpa@zytor.com, bp@alien8.de, brgerst@gmail.com, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, dvlasenk@redhat.com, bp@suse.de In-Reply-To: <1459801503-15600-9-git-send-email-bp@alien8.de> References: <1459801503-15600-9-git-send-email-bp@alien8.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/asm] x86/cpufeature: Replace cpu_has_fxsr with boot_cpu_has() usage Git-Commit-ID: 01f8fd7379149fb9a4046e76617958bf771f856f X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 01f8fd7379149fb9a4046e76617958bf771f856f Gitweb: http://git.kernel.org/tip/01f8fd7379149fb9a4046e76617958bf771f856f Author: Borislav Petkov AuthorDate: Mon, 4 Apr 2016 22:25:01 +0200 Committer: Ingo Molnar CommitDate: Wed, 13 Apr 2016 11:37:41 +0200 x86/cpufeature: Replace cpu_has_fxsr with boot_cpu_has() usage Signed-off-by: Borislav Petkov Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1459801503-15600-9-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar --- arch/x86/include/asm/cpufeature.h | 1 - arch/x86/kernel/fpu/core.c | 6 +++--- arch/x86/kernel/fpu/init.c | 6 +++--- arch/x86/kernel/fpu/regset.c | 13 ++++++++----- 4 files changed, 14 insertions(+), 12 deletions(-) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index c532961..526381a 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -118,7 +118,6 @@ extern const char * const x86_bug_flags[NBUGINTS*32]; set_bit(bit, (unsigned long *)cpu_caps_set); \ } while (0) -#define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR) #define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE) #define cpu_has_xsaves boot_cpu_has(X86_FEATURE_XSAVES) /* diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 0e7859f..1551b28 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -224,7 +224,7 @@ void fpstate_init(union fpregs_state *state) memset(state, 0, xstate_size); - if (cpu_has_fxsr) + if (static_cpu_has(X86_FEATURE_FXSR)) fpstate_init_fxstate(&state->fxsave); else fpstate_init_fstate(&state->fsave); @@ -508,7 +508,7 @@ void fpu__clear(struct fpu *fpu) static inline unsigned short get_fpu_cwd(struct fpu *fpu) { - if (cpu_has_fxsr) { + if (boot_cpu_has(X86_FEATURE_FXSR)) { return fpu->state.fxsave.cwd; } else { return (unsigned short)fpu->state.fsave.cwd; @@ -517,7 +517,7 @@ static inline unsigned short get_fpu_cwd(struct fpu *fpu) static inline unsigned short get_fpu_swd(struct fpu *fpu) { - if (cpu_has_fxsr) { + if (boot_cpu_has(X86_FEATURE_FXSR)) { return fpu->state.fxsave.swd; } else { return (unsigned short)fpu->state.fsave.swd; diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c index 3a84275..aacfd7a 100644 --- a/arch/x86/kernel/fpu/init.c +++ b/arch/x86/kernel/fpu/init.c @@ -29,7 +29,7 @@ static void fpu__init_cpu_generic(void) unsigned long cr0; unsigned long cr4_mask = 0; - if (cpu_has_fxsr) + if (boot_cpu_has(X86_FEATURE_FXSR)) cr4_mask |= X86_CR4_OSFXSR; if (boot_cpu_has(X86_FEATURE_XMM)) cr4_mask |= X86_CR4_OSXMMEXCPT; @@ -106,7 +106,7 @@ static void __init fpu__init_system_mxcsr(void) { unsigned int mask = 0; - if (cpu_has_fxsr) { + if (boot_cpu_has(X86_FEATURE_FXSR)) { /* Static because GCC does not get 16-byte stack alignment right: */ static struct fxregs_state fxregs __initdata; @@ -221,7 +221,7 @@ static void __init fpu__init_system_xstate_size_legacy(void) setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT); xstate_size = sizeof(struct swregs_state); } else { - if (cpu_has_fxsr) + if (boot_cpu_has(X86_FEATURE_FXSR)) xstate_size = sizeof(struct fxregs_state); else xstate_size = sizeof(struct fregs_state); diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c index 8bd1c00..4cff7af 100644 --- a/arch/x86/kernel/fpu/regset.c +++ b/arch/x86/kernel/fpu/regset.c @@ -21,7 +21,10 @@ int regset_xregset_fpregs_active(struct task_struct *target, const struct user_r { struct fpu *target_fpu = &target->thread.fpu; - return (cpu_has_fxsr && target_fpu->fpstate_active) ? regset->n : 0; + if (boot_cpu_has(X86_FEATURE_FXSR) && target_fpu->fpstate_active) + return regset->n; + else + return 0; } int xfpregs_get(struct task_struct *target, const struct user_regset *regset, @@ -30,7 +33,7 @@ int xfpregs_get(struct task_struct *target, const struct user_regset *regset, { struct fpu *fpu = &target->thread.fpu; - if (!cpu_has_fxsr) + if (!boot_cpu_has(X86_FEATURE_FXSR)) return -ENODEV; fpu__activate_fpstate_read(fpu); @@ -47,7 +50,7 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset, struct fpu *fpu = &target->thread.fpu; int ret; - if (!cpu_has_fxsr) + if (!boot_cpu_has(X86_FEATURE_FXSR)) return -ENODEV; fpu__activate_fpstate_write(fpu); @@ -278,7 +281,7 @@ int fpregs_get(struct task_struct *target, const struct user_regset *regset, if (!static_cpu_has(X86_FEATURE_FPU)) return fpregs_soft_get(target, regset, pos, count, kbuf, ubuf); - if (!cpu_has_fxsr) + if (!boot_cpu_has(X86_FEATURE_FXSR)) return user_regset_copyout(&pos, &count, &kbuf, &ubuf, &fpu->state.fsave, 0, -1); @@ -309,7 +312,7 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset, if (!static_cpu_has(X86_FEATURE_FPU)) return fpregs_soft_set(target, regset, pos, count, kbuf, ubuf); - if (!cpu_has_fxsr) + if (!boot_cpu_has(X86_FEATURE_FXSR)) return user_regset_copyin(&pos, &count, &kbuf, &ubuf, &fpu->state.fsave, 0, -1);