22 lines
321 B
C
22 lines
321 B
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2023
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*/
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#include <asm/facility.h>
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unsigned int stfle_size(void)
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{
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static unsigned int size;
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unsigned int r;
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u64 dummy;
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r = READ_ONCE(size);
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if (!r) {
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r = __stfle_asm(&dummy, 1) + 1;
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WRITE_ONCE(size, r);
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}
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return r;
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}
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EXPORT_SYMBOL(stfle_size);
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