c78d0c7484
The dma section name is confusing, since the code which resides within that section has nothing to do with direct memory access. Instead the limitation is that the code has to run in 31 bit addressing mode, and therefore has to reside below 2GB. So the name was chosen since ZONE_DMA is the same region. To reduce confusion rename the section to amode31, which hopefully describes better what this is about. Note: this will also change vmcoreinfo strings - SDMA=... gets renamed to SAMODE31=... - EDMA=... gets renamed to EAMODE31=... Acked-by: Vasily Gorbik <gor@linux.ibm.com> Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _S390_SECTIONS_H
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#define _S390_SECTIONS_H
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#define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed
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#include <asm-generic/sections.h>
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extern bool initmem_freed;
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static inline int arch_is_kernel_initmem_freed(unsigned long addr)
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{
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if (!initmem_freed)
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return 0;
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return addr >= (unsigned long)__init_begin &&
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addr < (unsigned long)__init_end;
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}
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/*
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* .boot.data section contains variables "shared" between the decompressor and
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* the decompressed kernel. The decompressor will store values in them, and
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* copy over to the decompressed image before starting it.
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*
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* Each variable end up in its own intermediate section .boot.data.<var name>,
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* those sections are later sorted by alignment + name and merged together into
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* final .boot.data section, which should be identical in the decompressor and
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* the decompressed kernel (that is checked during the build).
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*/
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#define __bootdata(var) __section(".boot.data." #var) var
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/*
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* .boot.preserved.data is similar to .boot.data, but it is not part of the
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* .init section and thus will be preserved for later use in the decompressed
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* kernel.
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*/
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#define __bootdata_preserved(var) __section(".boot.preserved.data." #var) var
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extern unsigned long __samode31, __eamode31;
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extern unsigned long __stext_amode31, __etext_amode31;
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#endif
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