diff options
| -rw-r--r-- | arch/powerpc/include/asm/fadump.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/fadump.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-memory.c | 7 |
3 files changed, 14 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h index 0a4e37159276..188776befaf9 100644 --- a/arch/powerpc/include/asm/fadump.h +++ b/arch/powerpc/include/asm/fadump.h @@ -205,7 +205,7 @@ struct fad_crash_memory_ranges { unsigned long long size; }; -extern int is_fadump_boot_memory_area(u64 addr, ulong size); +extern int is_fadump_memory_area(u64 addr, ulong size); extern int early_init_dt_scan_fw_dump(unsigned long node, const char *uname, int depth, void *data); extern int fadump_reserve_mem(void); diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index b7f83d6eb697..45a8d0be1c96 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -183,13 +183,19 @@ int __init early_init_dt_scan_fw_dump(unsigned long node, /* * If fadump is registered, check if the memory provided - * falls within boot memory area. + * falls within boot memory area and reserved memory area. */ -int is_fadump_boot_memory_area(u64 addr, ulong size) +int is_fadump_memory_area(u64 addr, ulong size) { + u64 d_start = fw_dump.reserve_dump_area_start; + u64 d_end = d_start + fw_dump.reserve_dump_area_size; + if (!fw_dump.dump_registered) return 0; + if (((addr + size) > d_start) && (addr <= d_end)) + return 1; + return (addr + size) > RMA_START && addr <= fw_dump.boot_memory_size; } diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 3b881ac66d9a..be8a6db3558e 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -353,8 +353,11 @@ static bool lmb_is_removable(struct drmem_lmb *lmb) phys_addr = lmb->base_addr; #ifdef CONFIG_FA_DUMP - /* Don't hot-remove memory that falls in fadump boot memory area */ - if (is_fadump_boot_memory_area(phys_addr, block_sz)) + /* + * Don't hot-remove memory that falls in fadump boot memory area + * and memory that is reserved for capturing old kernel memory. + */ + if (is_fadump_memory_area(phys_addr, block_sz)) return false; #endif |