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x86/fpu: Remove 'kbuf' parameter from the copy_xstate_to_user() APIs

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The 'kbuf' parameter is unused in the _user() side of the API, remove it.

This simplifies the code and makes it easier to think about.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-5-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2017-09-23 14:59:47 +02:00
parent 4d981cf2d9
commit a69c158fb3
3 changed files with 9 additions and 20 deletions
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2
arch/x86/kernel/fpu/regset.c
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@@ -95,7 +95,7 @@ int xstateregs_get(struct task_struct *target, const struct user_regset *regset,
if (kbuf)
ret = copy_xstate_to_kernel(pos, count, kbuf, xsave);
else
ret = copy_xstate_to_user(pos, count, kbuf, ubuf, xsave);
ret = copy_xstate_to_user(pos, count, ubuf, xsave);
} else {
fpstate_sanitize_xstate(fpu);
/*