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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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af0735269b
Commitbf64f0517e("s390/mem_detect: handle online memory limit just once") introduced truncation of mem_detect online ranges based on identity mapping size. For kdump case however the full set of online memory ranges has to be feed into memblock_physmem_add so that crashed system memory could be extracted. Instead of truncating introduce a "usable limit" which is respected by mem_detect api. Also add extra online memory ranges iterator which still provides full set of online memory ranges disregarding the "usable limit". Fixes:bf64f0517e("s390/mem_detect: handle online memory limit just once") Reported-by: Alexander Egorenkov <egorenar@linux.ibm.com> Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BOOT_BOOT_H
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#define BOOT_BOOT_H
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#include <linux/types.h>
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#define IPL_START 0x200
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#ifndef __ASSEMBLY__
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struct machine_info {
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unsigned char has_edat1 : 1;
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unsigned char has_edat2 : 1;
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unsigned char has_nx : 1;
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};
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struct vmlinux_info {
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unsigned long default_lma;
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unsigned long entry;
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unsigned long image_size; /* does not include .bss */
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unsigned long bss_size; /* uncompressed image .bss size */
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unsigned long bootdata_off;
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unsigned long bootdata_size;
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unsigned long bootdata_preserved_off;
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unsigned long bootdata_preserved_size;
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unsigned long dynsym_start;
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unsigned long rela_dyn_start;
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unsigned long rela_dyn_end;
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unsigned long amode31_size;
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unsigned long init_mm_off;
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unsigned long swapper_pg_dir_off;
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unsigned long invalid_pg_dir_off;
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};
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void startup_kernel(void);
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unsigned long detect_memory(unsigned long *safe_addr);
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void mem_detect_set_usable_limit(unsigned long limit);
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bool is_ipl_block_dump(void);
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void store_ipl_parmblock(void);
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unsigned long read_ipl_report(unsigned long safe_addr);
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void setup_boot_command_line(void);
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void parse_boot_command_line(void);
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void verify_facilities(void);
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void print_missing_facilities(void);
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void sclp_early_setup_buffer(void);
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void print_pgm_check_info(void);
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unsigned long get_random_base(unsigned long safe_addr);
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void setup_vmem(unsigned long asce_limit);
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unsigned long vmem_estimate_memory_needs(unsigned long online_mem_total);
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void __printf(1, 2) decompressor_printk(const char *fmt, ...);
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void error(char *m);
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extern struct machine_info machine;
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/* Symbols defined by linker scripts */
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extern const char kernel_version[];
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extern unsigned long memory_limit;
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extern unsigned long vmalloc_size;
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extern int vmalloc_size_set;
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extern int kaslr_enabled;
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extern char __boot_data_start[], __boot_data_end[];
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extern char __boot_data_preserved_start[], __boot_data_preserved_end[];
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extern char _decompressor_syms_start[], _decompressor_syms_end[];
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extern char _stack_start[], _stack_end[];
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extern char _end[];
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extern unsigned char _compressed_start[];
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extern unsigned char _compressed_end[];
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extern struct vmlinux_info _vmlinux_info;
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#define vmlinux _vmlinux_info
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#define __abs_lowcore_pa(x) (((unsigned long)(x) - __abs_lowcore) % sizeof(struct lowcore))
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#endif /* __ASSEMBLY__ */
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#endif /* BOOT_BOOT_H */
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