x86/msr: Make rdmsrl_safe_on_cpu() scheduling safe as well
When changing rdmsr_safe_on_cpu() to schedule, it was missed that
__rdmsr_safe_on_cpu() was also used by rdmsrl_safe_on_cpu()
Make rdmsrl_safe_on_cpu() a wrapper instead of copy/pasting the code which
was added for the completion handling.
Fixes: 07cde313b2
("x86/msr: Allow rdmsr_safe_on_cpu() to schedule")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180328032233.153055-1-edumazet@google.com
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@ -225,16 +225,13 @@ EXPORT_SYMBOL(wrmsrl_safe_on_cpu);
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int rdmsrl_safe_on_cpu(unsigned int cpu, u32 msr_no, u64 *q)
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{
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u32 low, high;
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int err;
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struct msr_info rv;
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memset(&rv, 0, sizeof(rv));
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err = rdmsr_safe_on_cpu(cpu, msr_no, &low, &high);
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*q = (u64)high << 32 | low;
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rv.msr_no = msr_no;
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err = smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 1);
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*q = rv.reg.q;
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return err ? err : rv.err;
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return err;
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}
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EXPORT_SYMBOL(rdmsrl_safe_on_cpu);
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