admin-guide/kdump/vmcoreinfo.rst

11 section and used by user-space tools like crash and makedumpfile to
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39 User-space tools can get the kernel name, host name, kernel release
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78 an index into the mem_map array. Right-shifting a physical address
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90 User-space tools use this to exclude free pages when dumping memory.
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136 post-mortem analysis session.
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147 User-space tools compute their values based on the offset of these
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166 User-space tools compute required values based on the offset of these
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182 circular linked list. User-space tools need these in order to traverse
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188 Offsets of the vmap_area's members. They carry vmalloc-specific
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195 Free areas descriptor. User-space tools use this value to iterate the
199 ---
204 Used by user-space tools to read the active kernel log buffer.
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219 SYSLOG_ACTION_CLEAR, like issued by 'dmesg -c'. Used by user-space
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233 user-space tools to view the kernel log buffer without requiring the
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246 by user-space tools to be able to traverse the descriptors without
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259 user-space tools to be able to read descriptors without requiring
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273 by user-space tools to be able to locate data blocks without
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280 the meta-data for a record.
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285 Offsets for the fields providing the meta-data for a record. Used by
286 user-space tools to be able to read the information without requiring
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299 user-space tools to be able to access the data blocks without
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305 The size of the atomic_long_t structure. Used by user-space tools to
307 architecture-specific implementation.
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313 user-space tools to access the long value without requiring the
314 architecture-specific declaration.
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325 On linux-2.6.21 or later, the number of free pages is in
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360 User-space tools need to know whether the crash kernel was in 5-level
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389 AMD-specific with SME support: it indicates the secure memory encryption
396 Currently, sme_mask stores the value of the C-bit position. If needed,
397 additional SME-relevant info can be placed in that variable.
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454 The region size is 2^(64-T1SZ) bytes.
456 TTBR1_EL1 is the table base address register specified by ARMv8-A
457 architecture which is used to lookup the page-tables for the Virtual
458 addresses in the higher VA range (refer to ARMv8 ARM document for
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465 	MODULES_VADDR ~ MODULES_END-1 : Kernel module space.
466 	VMALLOC_START ~ VMALLOC_END-1 : vmalloc() / ioremap() space.
467 	VMEMMAP_START ~ VMEMMAP_END-1 : vmemmap region, used for struct page array.
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539 User-space tools need to know the offset of list, phys and virt_addr
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575 Indicates the virtual kernel start address of the direct-mapped RAM region.
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