From: Ingo Molnar <mingo@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Andy Lutomirski <luto@amacapital.net>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH 145/208] x86/fpu: Simplify fpu__save()
Date: Tue, 5 May 2015 19:50:37 +0200 [thread overview]
Message-ID: <1430848300-27877-67-git-send-email-mingo@kernel.org> (raw)
In-Reply-To: <1430848300-27877-1-git-send-email-mingo@kernel.org>
Factor out a common call.
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/kernel/fpu/core.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 478e002ab122..1e79a6b3fc27 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -180,12 +180,9 @@ void fpu__save(struct fpu *fpu)
preempt_disable();
if (fpu->fpregs_active) {
- if (use_eager_fpu()) {
- copy_fpregs_to_fpstate(fpu);
- } else {
- copy_fpregs_to_fpstate(fpu);
+ copy_fpregs_to_fpstate(fpu);
+ if (!use_eager_fpu())
fpregs_deactivate(fpu);
- }
}
preempt_enable();
}
--
2.1.0
next prev parent reply other threads:[~2015-05-05 18:17 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 17:49 [PATCH 000/208] big x86 FPU code rewrite Ingo Molnar
2015-05-05 17:49 ` [PATCH 080/208] x86/fpu: Rename 'xstate_features' to 'xfeatures_nr' Ingo Molnar
2015-05-05 17:49 ` [PATCH 081/208] x86/fpu: Move XCR0 manipulation to the FPU code proper Ingo Molnar
2015-05-05 17:49 ` [PATCH 082/208] x86/fpu: Clean up regset functions Ingo Molnar
2015-05-05 17:49 ` [PATCH 083/208] x86/fpu: Rename 'xsave_hdr' to 'header' Ingo Molnar
2015-05-05 17:49 ` [PATCH 084/208] x86/fpu: Rename xsave.header::xstate_bv to 'xfeatures' Ingo Molnar
2015-05-05 17:57 ` Dave Hansen
2015-05-05 18:16 ` Ingo Molnar
2015-05-05 18:25 ` Dave Hansen
2015-05-06 6:16 ` Ingo Molnar
2015-05-06 12:46 ` Ingo Molnar
2015-05-06 15:09 ` Dave Hansen
2015-05-07 11:46 ` Ingo Molnar
2015-05-06 18:27 ` Dave Hansen
2015-05-07 10:59 ` Borislav Petkov
2015-05-07 12:22 ` Ingo Molnar
2015-05-07 14:58 ` Dave Hansen
2015-05-07 15:33 ` Ingo Molnar
2015-05-07 15:58 ` Dave Hansen
2015-05-07 19:35 ` Ingo Molnar
2015-05-05 17:49 ` [PATCH 085/208] x86/fpu: Clean up and fix MXCSR handling Ingo Molnar
2015-05-05 17:49 ` [PATCH 086/208] x86/fpu: Rename regset FPU register accessors Ingo Molnar
2015-05-05 17:49 ` [PATCH 087/208] x86/fpu: Explain the AVX register layout in the xsave area Ingo Molnar
2015-05-05 17:49 ` [PATCH 088/208] x86/fpu: Improve the __sanitize_i387_state() documentation Ingo Molnar
2015-05-05 17:49 ` [PATCH 089/208] x86/fpu: Rename fpu->has_fpu to fpu->fpregs_active Ingo Molnar
2015-05-05 17:49 ` [PATCH 090/208] x86/fpu: Rename __thread_set_has_fpu() to __fpregs_activate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 091/208] x86/fpu: Rename __thread_clear_has_fpu() to __fpregs_deactivate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 092/208] x86/fpu: Rename __thread_fpu_begin() to fpregs_activate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 093/208] x86/fpu: Rename __thread_fpu_end() to fpregs_deactivate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 094/208] x86/fpu: Remove fpstate_xstate_init_size() boot quirk Ingo Molnar
2015-05-05 17:49 ` [PATCH 095/208] x86/fpu: Remove xsave_init() bootmem allocations Ingo Molnar
2015-05-05 17:49 ` [PATCH 096/208] x86/fpu: Make setup_init_fpu_buf() run-once explicitly Ingo Molnar
2015-05-05 17:49 ` [PATCH 097/208] x86/fpu: Remove 'init_xstate_buf' bootmem allocation Ingo Molnar
2015-07-14 19:46 ` 4.2-rc2: early boot memory corruption from FPU rework Dave Hansen
2015-07-15 1:25 ` H. Peter Anvin
2015-07-15 11:07 ` Ingo Molnar
2015-07-16 0:34 ` [REGRESSION] " Dave Hansen
2015-07-16 2:39 ` Linus Torvalds
2015-07-16 2:51 ` Linus Torvalds
2015-07-17 7:45 ` Ingo Molnar
2015-07-17 8:51 ` Ingo Molnar
2015-07-17 16:58 ` Dave Hansen
2015-07-17 19:32 ` Ingo Molnar
2015-07-17 20:01 ` Dave Hansen
2015-05-05 17:49 ` [PATCH 098/208] x86/fpu: Split fpu__cpu_init() into early-boot and cpu-boot parts Ingo Molnar
2015-05-05 17:49 ` [PATCH 099/208] x86/fpu: Make the system/cpu init distinction clear in the xstate code as well Ingo Molnar
2015-05-05 17:49 ` [PATCH 100/208] x86/fpu: Move CPU capability check into fpu__init_cpu_xstate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 101/208] x86/fpu: Move legacy check to fpu__init_system_xstate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 102/208] x86/fpu: Propagate once per boot quirk into fpu__init_system_xstate() Ingo Molnar
2015-05-05 17:49 ` [PATCH 103/208] x86/fpu: Remove xsave_init() Ingo Molnar
2015-05-05 17:49 ` [PATCH 104/208] x86/fpu: Do fpu__init_system_xstate only from fpu__init_system() Ingo Molnar
2015-05-05 17:49 ` [PATCH 105/208] x86/fpu: Set up the legacy FPU init image " Ingo Molnar
2015-05-05 17:49 ` [PATCH 106/208] x86/fpu: Remove setup_init_fpu_buf() call from eager_fpu_init() Ingo Molnar
2015-05-05 17:49 ` [PATCH 107/208] x86/fpu: Move all eager-fpu setup code to eager_fpu_init() Ingo Molnar
2015-05-05 17:50 ` [PATCH 108/208] x86/fpu: Move eager_fpu_init() to fpu/init.c Ingo Molnar
2015-05-05 17:50 ` [PATCH 109/208] x86/fpu: Clean up eager_fpu_init() and rename it to fpu__ctx_switch_init() Ingo Molnar
2015-05-05 17:50 ` [PATCH 110/208] x86/fpu: Split fpu__ctx_switch_init() into _cpu() and _system() portions Ingo Molnar
2015-05-05 17:50 ` [PATCH 111/208] x86/fpu: Do CLTS fpu__init_system() Ingo Molnar
2015-05-05 17:50 ` [PATCH 112/208] x86/fpu: Move the fpstate_xstate_init_size() call into fpu__init_system() Ingo Molnar
2015-05-05 17:50 ` [PATCH 113/208] x86/fpu: Call fpu__init_cpu_ctx_switch() from fpu__init_cpu() Ingo Molnar
2015-05-05 17:50 ` [PATCH 114/208] x86/fpu: Do system-wide setup from fpu__detect() Ingo Molnar
2015-05-05 17:50 ` [PATCH 115/208] x86/fpu: Remove fpu__init_cpu_ctx_switch() call from fpu__init_system() Ingo Molnar
2015-05-05 17:50 ` [PATCH 116/208] x86/fpu: Simplify fpu__cpu_init() Ingo Molnar
2015-05-05 17:50 ` [PATCH 117/208] x86/fpu: Factor out fpu__init_cpu_generic() Ingo Molnar
2015-05-05 17:50 ` [PATCH 118/208] x86/fpu: Factor out fpu__init_system_generic() Ingo Molnar
2015-05-05 17:50 ` [PATCH 119/208] x86/fpu: Factor out fpu__init_system_early_generic() Ingo Molnar
2015-05-05 17:50 ` [PATCH 120/208] x86/fpu: Move !FPU check ingo fpu__init_system_early_generic() Ingo Molnar
2015-05-05 17:50 ` [PATCH 121/208] x86/fpu: Factor out FPU bug checks into fpu/bugs.c Ingo Molnar
2015-05-05 17:50 ` [PATCH 122/208] x86/fpu: Make check_fpu() init ordering independent Ingo Molnar
2015-05-05 17:50 ` [PATCH 123/208] x86/fpu: Move fpu__init_system_early_generic() out of fpu__detect() Ingo Molnar
2015-05-05 17:50 ` [PATCH 124/208] x86/fpu: Remove the extra fpu__detect() layer Ingo Molnar
2015-05-05 17:50 ` [PATCH 125/208] x86/fpu: Rename fpstate_xstate_init_size() to fpu__init_system_xstate_size_legacy() Ingo Molnar
2015-05-05 17:50 ` [PATCH 126/208] x86/fpu: Reorder init methods Ingo Molnar
2015-05-05 17:50 ` [PATCH 127/208] x86/fpu: Add more comments to the FPU init code Ingo Molnar
2015-05-05 17:50 ` [PATCH 128/208] x86/fpu: Move fpu__save() to fpu/internals.h Ingo Molnar
2015-05-05 17:50 ` [PATCH 129/208] x86/fpu: Uninline kernel_fpu_begin()/end() Ingo Molnar
2015-05-05 17:50 ` [PATCH 130/208] x86/fpu: Move various internal function prototypes to fpu/internal.h Ingo Molnar
2015-05-05 17:50 ` [PATCH 131/208] x86/fpu: Uninline the irq_ts_save()/restore() functions Ingo Molnar
2015-05-05 17:50 ` [PATCH 132/208] x86/fpu: Rename fpu_save_init() to copy_fpregs_to_fpstate() Ingo Molnar
2015-05-05 17:50 ` [PATCH 133/208] x86/fpu: Optimize copy_fpregs_to_fpstate() by removing the FNCLEX synchronization with FP exceptions Ingo Molnar
2015-05-05 17:50 ` [PATCH 134/208] x86/fpu: Simplify FPU handling by embedding the fpstate in task_struct (again) Ingo Molnar
2015-05-05 17:50 ` [PATCH 135/208] x86/fpu: Remove failure paths from fpstate-alloc low level functions Ingo Molnar
2015-05-05 17:50 ` [PATCH 136/208] x86/fpu: Remove failure return from fpstate_alloc_init() Ingo Molnar
2015-05-05 17:50 ` [PATCH 137/208] x86/fpu: Rename fpstate_alloc_init() to fpstate_init_curr() Ingo Molnar
2015-05-05 17:50 ` [PATCH 138/208] x86/fpu: Simplify fpu__unlazy_stopped() error handling Ingo Molnar
2015-05-05 17:50 ` [PATCH 139/208] x86/fpu, kvm: Simplify fx_init() Ingo Molnar
2015-05-05 17:50 ` [PATCH 140/208] x86/fpu: Simplify fpstate_init_curr() usage Ingo Molnar
2015-05-05 17:50 ` [PATCH 141/208] x86/fpu: Rename fpu__unlazy_stopped() to fpu__activate_stopped() Ingo Molnar
2015-05-05 17:50 ` [PATCH 142/208] x86/fpu: Factor out FPU hw activation/deactivation Ingo Molnar
2015-05-05 17:50 ` [PATCH 143/208] x86/fpu: Simplify __save_fpu() Ingo Molnar
2015-05-05 17:50 ` [PATCH 144/208] x86/fpu: Eliminate __save_fpu() Ingo Molnar
2015-05-05 17:50 ` Ingo Molnar [this message]
2015-05-05 17:50 ` [PATCH 146/208] x86/fpu: Optimize fpu__save() Ingo Molnar
2015-05-05 17:50 ` [PATCH 147/208] x86/fpu: Optimize fpu_copy() Ingo Molnar
2015-05-05 17:50 ` [PATCH 148/208] x86/fpu: Optimize fpu_copy() some more on lazy switching systems Ingo Molnar
2015-05-05 17:50 ` [PATCH 149/208] x86/fpu: Rename fpu/xsave.h to fpu/xstate.h Ingo Molnar
2015-05-05 17:50 ` [PATCH 150/208] x86/fpu: Rename fpu/xsave.c to fpu/xstate.c Ingo Molnar
2015-05-05 17:50 ` [PATCH 151/208] x86/fpu: Introduce cpu_has_xfeatures(xfeatures_mask, feature_name) Ingo Molnar
2015-05-05 22:15 ` Yu, Fenghua
2015-05-06 5:00 ` Ingo Molnar
2015-05-05 17:50 ` [PATCH 152/208] x86/fpu: Simplify print_xstate_features() Ingo Molnar
2015-05-05 17:50 ` [PATCH 153/208] x86/fpu: Enumerate xfeature bits Ingo Molnar
2015-05-05 17:50 ` [PATCH 154/208] x86/fpu: Move xfeature type enumeration to fpu/types.h Ingo Molnar
2015-05-05 17:50 ` [PATCH 155/208] x86/fpu, crypto x86/camellia_aesni_avx: Simplify the camellia_aesni_init() xfeature checks Ingo Molnar
2015-05-05 17:50 ` [PATCH 156/208] x86/fpu, crypto x86/sha256_ssse3: Simplify the sha256_ssse3_mod_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 157/208] x86/fpu, crypto x86/camellia_aesni_avx2: Simplify the camellia_aesni_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 158/208] x86/fpu, crypto x86/twofish_avx: Simplify the twofish_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 159/208] x86/fpu, crypto x86/serpent_avx: Simplify the serpent_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 160/208] x86/fpu, crypto x86/cast5_avx: Simplify the cast5_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 161/208] x86/fpu, crypto x86/sha512_ssse3: Simplify the sha512_ssse3_mod_init() " Ingo Molnar
2015-05-05 17:50 ` [PATCH 162/208] x86/fpu, crypto x86/cast6_avx: Simplify the cast6_init() " Ingo Molnar
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