x86/fpu/xstate: Consolidate size calculations

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Use the offset calculation to do the size calculation which avoids yet
another series of CPUID instructions for each invocation.

  [ Fix the FP/SSE only case which missed to take the xstate
    header into account, as
    Reported-by: kernel test robot <oliver.sang@intel.com> ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/87o81pgbp2.ffs@tglx

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Thomas Gleixner 2022-03-28 20:43:21 +02:00 • committed by Borislav Petkov

parent 781c64bfcb

commit d6d6d50f1e

1 changed files with 8 additions and 41 deletions

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arch/x86/kernel/fpu/xstate.c

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