diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-06-23 14:01:54 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-06-23 18:12:30 +0200 |
| commit | 16dcf4385933a02bb21d0af86a04439d151ad42a (patch) | |
| tree | 9df58cd1d6c60d377de4283b1b18a2286f3925cf /arch/x86/kernel/fpu/signal.c | |
| parent | x86/fpu: Rename copy_user_to_xregs() and copy_xregs_to_user() (diff) | |
| download | linux-dev-16dcf4385933a02bb21d0af86a04439d151ad42a.tar.xz linux-dev-16dcf4385933a02bb21d0af86a04439d151ad42a.zip | |
x86/fpu: Rename fxregs-related copy functions
The function names for fxsave/fxrstor operations are horribly named and
a permanent source of confusion.
Rename:
copy_fxregs_to_kernel() to fxsave()
copy_kernel_to_fxregs() to fxrstor()
copy_fxregs_to_user() to fxsave_to_user_sigframe()
copy_user_to_fxregs() to fxrstor_from_user_sigframe()
so it's clear what these are doing. All these functions are really low
level wrappers around the equally named instructions, so mapping to the
documentation is just natural.
While at it, replace the static_cpu_has(X86_FEATURE_FXSR) with
use_fxsr() to be consistent with the rest of the code.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121454.017863494@linutronix.de
Diffstat (limited to 'arch/x86/kernel/fpu/signal.c')
| -rw-r--r-- | arch/x86/kernel/fpu/signal.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c index 4fe632f56697..05f8445eb676 100644 --- a/arch/x86/kernel/fpu/signal.c +++ b/arch/x86/kernel/fpu/signal.c @@ -64,7 +64,7 @@ static inline int save_fsave_header(struct task_struct *tsk, void __user *buf) fpregs_lock(); if (!test_thread_flag(TIF_NEED_FPU_LOAD)) - copy_fxregs_to_kernel(&tsk->thread.fpu); + fxsave(&tsk->thread.fpu.state.fxsave); fpregs_unlock(); convert_from_fxsr(&env, tsk); @@ -131,7 +131,7 @@ static inline int copy_fpregs_to_sigframe(struct xregs_state __user *buf) if (use_xsave()) err = xsave_to_user_sigframe(buf); else if (use_fxsr()) - err = copy_fxregs_to_user((struct fxregs_state __user *) buf); + err = fxsave_to_user_sigframe((struct fxregs_state __user *) buf); else err = copy_fregs_to_user((struct fregs_state __user *) buf); @@ -259,7 +259,7 @@ static int copy_user_to_fpregs_zeroing(void __user *buf, u64 xbv, int fx_only) if (fx_only) { init_bv = xfeatures_mask_user() & ~XFEATURE_MASK_FPSSE; - r = copy_user_to_fxregs(buf); + r = fxrstor_from_user_sigframe(buf); if (!r) os_xrstor(&init_fpstate.xsave, init_bv); return r; @@ -272,7 +272,7 @@ static int copy_user_to_fpregs_zeroing(void __user *buf, u64 xbv, int fx_only) return r; } } else if (use_fxsr()) { - return copy_user_to_fxregs(buf); + return fxrstor_from_user_sigframe(buf); } else return copy_user_to_fregs(buf); } @@ -458,7 +458,7 @@ static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size) os_xrstor(&init_fpstate.xsave, init_bv); } - ret = copy_kernel_to_fxregs_err(&fpu->state.fxsave); + ret = fxrstor_safe(&fpu->state.fxsave); } else { ret = __copy_from_user(&fpu->state.fsave, buf_fx, state_size); if (ret) |