s390/setup: don't reserve memory that occupied decompressor's head
There is no useful information within [STARTUP_NORMAL_OFFSET, HEAD_END] now. But the memory region [0, STARTUP_NORMAL_OFFSET] is used by: * lowcore * kdump for swapping memory * stand-alone zipl dumpers for code, data, stack and heap Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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@ -797,7 +797,7 @@ static void __init reserve_kernel(void)
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{
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{
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unsigned long start_pfn = PFN_UP(__pa(_end));
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unsigned long start_pfn = PFN_UP(__pa(_end));
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memblock_reserve(0, HEAD_END);
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memblock_reserve(0, STARTUP_NORMAL_OFFSET);
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memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn)
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memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn)
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- (unsigned long)_stext);
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- (unsigned long)_stext);
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}
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}
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