From: Oleg Nesterov <oleg@redhat.com>
To: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
Jens Axboe <axboe@kernel.dk>,
Peter Zijlstra <peterz@infradead.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Sohil Mehta <sohil.mehta@intel.com>,
Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [PATCH 3/6] x86/fpu: fold sync_fpstate() into get_fpstate()
Date: Thu, 14 Aug 2025 12:14:24 +0200 [thread overview]
Message-ID: <20250814101424.GA17352@redhat.com> (raw)
In-Reply-To: <20250814101340.GA17288@redhat.com>
After the previous change sync_fpstate() has no other callers.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
arch/x86/kernel/fpu/regset.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c
index f5a803774e1c..ecbabdc15ec1 100644
--- a/arch/x86/kernel/fpu/regset.c
+++ b/arch/x86/kernel/fpu/regset.c
@@ -43,16 +43,12 @@ int regset_xregset_fpregs_active(struct task_struct *target, const struct user_r
* - ptrace to dump fpstate of a stopped task, in which case the registers
* have already been saved to fpstate on context switch.
*/
-static void sync_fpstate(struct fpu *fpu)
-{
- if (fpu == x86_task_fpu(current))
- fpu_sync_fpstate(fpu);
-}
-
static struct fpstate *get_fpstate(struct task_struct *task)
{
struct fpu *fpu = x86_task_fpu(task);
- sync_fpstate(fpu);
+
+ if (task == current)
+ fpu_sync_fpstate(fpu);
return fpu->fpstate;
}
--
2.25.1.362.g51ebf55
next prev parent reply other threads:[~2025-08-14 10:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-14 10:13 [PATCH 0/6] x86/fpu: don't abuse x86_task_fpu(PF_USER_WORKER) in .regset_get() paths Oleg Nesterov
2025-08-14 10:14 ` [PATCH 1/6] x86/fpu: change copy_xstate_to_uabi_buf() to accept fpstate + pkru instead of task_struct Oleg Nesterov
2025-08-14 16:46 ` Edgecombe, Rick P
2025-08-15 12:22 ` Oleg Nesterov
2025-08-14 10:14 ` [PATCH 2/6] x86/fpu: regset: introduce get_fpstate() helper Oleg Nesterov
2025-08-14 10:14 ` Oleg Nesterov [this message]
2025-08-14 10:14 ` [PATCH 4/6] x86/shstk: add "task_struct *tsk" argument to reset_thread_features() Oleg Nesterov
2025-08-14 10:14 ` [PATCH 5/6] x86/shstk: don't create the shadow stack for PF_USER_WORKERs Oleg Nesterov
2025-08-14 17:03 ` Edgecombe, Rick P
2025-08-14 18:33 ` Mark Brown
2025-08-14 22:43 ` Edgecombe, Rick P
2025-08-15 11:44 ` Mark Brown
2025-08-15 19:11 ` Deepak Gupta
2025-08-18 17:27 ` Mark Brown
2025-08-19 17:41 ` Deepak Gupta
2025-08-15 13:01 ` Oleg Nesterov
2025-08-15 13:08 ` Oleg Nesterov
2025-08-15 15:28 ` Mark Brown
2025-08-15 15:43 ` Oleg Nesterov
2025-08-15 15:48 ` Mark Brown
2025-08-15 16:00 ` Oleg Nesterov
2025-08-15 17:08 ` Mark Brown
2025-08-15 12:17 ` Oleg Nesterov
2025-08-15 16:19 ` Edgecombe, Rick P
2025-08-15 16:54 ` Oleg Nesterov
2025-08-15 17:46 ` Edgecombe, Rick P
2025-08-15 19:13 ` Oleg Nesterov
2025-08-14 10:14 ` [PATCH 6/6] x86/fpu: change get_fpstate() to return &init_fpstate if PF_USER_WORKER Oleg Nesterov
2025-08-15 15:52 ` [PATCH 0/6] x86/fpu: don't abuse x86_task_fpu(PF_USER_WORKER) in .regset_get() paths Oleg Nesterov
2025-08-15 15:59 ` Dave Hansen
2025-08-15 16:02 ` Oleg Nesterov
2025-08-15 16:32 ` Sohil Mehta
2025-08-15 19:33 ` Oleg Nesterov
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