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    /* First is exception vector, second is 'implementation specific',
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    /* First is exception vector, second is 'implementation specific',
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       third and fourth is reserved, other contain real mode code */
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       third and fourth is reserved, other contain real mode code */
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    frame_mark_unavailable(0, 8);
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    frame_mark_unavailable(0, 8);
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    /* Mark the Page Hash Table frames as unavailable */
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    __u32 sdr1;
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    asm volatile (
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        "mfsdr1 %0\n"
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        : "=r" (sdr1)
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    );
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    frame_mark_unavailable(ADDR2PFN(sdr1 & 0xffff000), 16); // FIXME
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}
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}
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/** @}
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/** @}
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 */
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 */