x86/fpu: Remove failure paths from fpstate-alloc low level functions

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Now that we always allocate the FPU context as part of task_struct there's
no need for separate allocations - remove them and their primary failure
handling code.

( Note that there's still secondary error codes that have become superfluous,
  those will be removed in separate patches. )

Move the somewhat misplaced setup_xstate_comp() call to the core.

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: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

This commit is contained in:

Ingo Molnar 2015-04-27 05:52:40 +02:00

parent 7366ed771f

commit c4d6ee6e2e

5 changed files with 3 additions and 74 deletions

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4

arch/x86/include/asm/fpu/internal.h

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51

arch/x86/kernel/fpu/core.c

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1

arch/x86/kernel/fpu/init.c

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10

arch/x86/kernel/process.c

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11

arch/x86/kvm/x86.c

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