diff options
author | Ingo Molnar <mingo@kernel.org> | 2025-04-10 12:52:16 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2025-04-14 08:18:29 +0200 |
commit | e3a52b67f54aa36ab21265eeea016460b5fe1c46 (patch) | |
tree | 339345ab3f97e7a42ccf8cf984c48d563fb461b1 | |
parent | 8b2a7a7294b34fa00adbecbd352ef19eb780261b (diff) |
x86/fpu: Clarify FPU context cacheline alignment
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Chang S. Bae <chang.seok.bae@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>
Link: https://lore.kernel.org/r/Z_ejggklB5-IWB5W@gmail.com
-rw-r--r-- | arch/x86/kernel/fpu/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index d0a45f6492cb..3a19877a314e 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -607,7 +607,8 @@ int fpu_clone(struct task_struct *dst, unsigned long clone_flags, bool minimal, * We allocate the new FPU structure right after the end of the task struct. * task allocation size already took this into account. * - * This is safe because task_struct size is a multiple of cacheline size. + * This is safe because task_struct size is a multiple of cacheline size, + * thus x86_task_fpu() will always be cacheline aligned as well. */ struct fpu *dst_fpu = (void *)dst + sizeof(*dst); |