[PATCH v5 5/5] powerpc/crash hp: add crash page helper functions
Sourabh Jain
sourabhjain at linux.ibm.com
Mon Jun 20 17:01:06 AEST 2022
Define arch_[un]map_crash_pages functions to avoid build issues due to
undefined arch specific function to access crash memory pages.
A temporary patch to avoid build issues may need some changes in
generic code to avoid this.
The issue is under discussion:
https://lkml.org/lkml/2022/6/20/22
Signed-off-by: Sourabh Jain <sourabhjain at linux.ibm.com>
---
arch/powerpc/kexec/core_64.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 373cb46bcc0e..d833fa96dcfa 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -492,6 +492,13 @@ int update_cpus_node(void *fdt)
#if defined(CONFIG_HOTPLUG_CPU)
+void *arch_map_crash_pages(unsigned long paddr, unsigned long size)
+{
+ return __va(paddr);
+}
+
+void arch_unmap_crash_pages(void **ptr) { }
+
int crash_hotplug_support(void) { return 1; }
/**
--
2.36.1
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