diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtas-fadump.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/rtas-fadump.h | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/rtas-fadump.c b/arch/powerpc/platforms/pseries/rtas-fadump.c index bf1e8fc549b5..1d8f2871fa34 100644 --- a/arch/powerpc/platforms/pseries/rtas-fadump.c +++ b/arch/powerpc/platforms/pseries/rtas-fadump.c @@ -116,6 +116,11 @@ static u64 rtas_fadump_init_mem_struct(struct fw_dump *fadump_conf) return addr; } +static u64 rtas_fadump_get_bootmem_min(void) +{ + return RTAS_FADUMP_MIN_BOOT_MEM; +} + static int rtas_fadump_register(struct fw_dump *fadump_conf) { unsigned int wait_time; @@ -467,6 +472,7 @@ static void rtas_fadump_trigger(struct fadump_crash_info_header *fdh, static struct fadump_ops rtas_fadump_ops = { .fadump_init_mem_struct = rtas_fadump_init_mem_struct, + .fadump_get_bootmem_min = rtas_fadump_get_bootmem_min, .fadump_register = rtas_fadump_register, .fadump_unregister = rtas_fadump_unregister, .fadump_invalidate = rtas_fadump_invalidate, diff --git a/arch/powerpc/platforms/pseries/rtas-fadump.h b/arch/powerpc/platforms/pseries/rtas-fadump.h index 531f3f3e42b3..6602ff69e10d 100644 --- a/arch/powerpc/platforms/pseries/rtas-fadump.h +++ b/arch/powerpc/platforms/pseries/rtas-fadump.h @@ -9,6 +9,15 @@ #ifndef _PSERIES_RTAS_FADUMP_H #define _PSERIES_RTAS_FADUMP_H +/* + * On some Power systems where RMO is 128MB, it still requires minimum of + * 256MB for kernel to boot successfully. When kdump infrastructure is + * configured to save vmcore over network, we run into OOM issue while + * loading modules related to network setup. Hence we need additional 64M + * of memory to avoid OOM issue. + */ +#define RTAS_FADUMP_MIN_BOOT_MEM ((0x1UL << 28) + (0x1UL << 26)) + /* Firmware provided dump sections */ #define RTAS_FADUMP_CPU_STATE_DATA 0x0001 #define RTAS_FADUMP_HPTE_REGION 0x0002 |