@@ -595,3 +595,33 @@ X2TLB
-----
Indicates whether the crashed kernel enabled SH extended mode.
+
+RISCV64
+=======
+
+VA_BITS
+-------
+
+The maximum number of bits for virtual addresses. Used to compute the
+virtual memory ranges.
+
+PAGE_OFFSET
+-----------
+
+Indicates the virtual kernel start address of the direct-mapped RAM region.
+
+phys_ram_base
+-------------
+
+Indicates the start physical RAM address.
+
+MODULES_VADDR|MODULES_END|VMALLOC_START|VMALLOC_END|VMEMMAP_START|VMEMMAP_END|KASAN_SHADOW_START|KASAN_SHADOW_END|KERNEL_LINK_ADDR|ADDRESS_SPACE_END
+----------------------------------------------------------------------------------------------------------------------------------------------------
+
+Used to get the correct ranges:
+
+ * MODULES_VADDR ~ MODULES_END : Kernel module space.
+ * VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
+ * VMEMMAP_START ~ VMEMMAP_END : vmemmap space, used for struct page array.
+ * KASAN_SHADOW_START ~ KASAN_SHADOW_END : kasan shadow space.
+ * KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END : Kernel link and BPF space.
The following interrelated definitions and ranges are needed by the kdump crash tool, which are exported by "arch/riscv/kernel/crash_core.c": VA_BITS, PAGE_OFFSET, phys_ram_base, MODULES_VADDR ~ MODULES_END, VMALLOC_START ~ VMALLOC_END, VMEMMAP_START ~ VMEMMAP_END, KASAN_SHADOW_START ~ KASAN_SHADOW_END, KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END Document these RISCV64 exports above. Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> --- .../admin-guide/kdump/vmcoreinfo.rst | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+)