fadump.c (a3b2cb30f252b21a6f962e0dd107c8b897ca65e4) fadump.c (6fcd6baa90aeec9dcbe30786e15c125bf50503b2)
1/*
2 * Firmware Assisted dump: A robust mechanism to get reliable kernel crash
3 * dump with assistance from firmware. This approach does not use kexec,
4 * instead firmware assists in booting the kdump kernel while preserving
5 * memory contents. The most of the code implementation has been adapted
6 * from phyp assisted dump implementation written by Linas Vepstas and
7 * Manish Ahuja
8 *

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120int is_fadump_boot_memory_area(u64 addr, ulong size)
121{
122 if (!fw_dump.dump_registered)
123 return 0;
124
125 return (addr + size) > RMA_START && addr <= fw_dump.boot_memory_size;
126}
127
1/*
2 * Firmware Assisted dump: A robust mechanism to get reliable kernel crash
3 * dump with assistance from firmware. This approach does not use kexec,
4 * instead firmware assists in booting the kdump kernel while preserving
5 * memory contents. The most of the code implementation has been adapted
6 * from phyp assisted dump implementation written by Linas Vepstas and
7 * Manish Ahuja
8 *

--- 111 unchanged lines hidden (view full) ---

120int is_fadump_boot_memory_area(u64 addr, ulong size)
121{
122 if (!fw_dump.dump_registered)
123 return 0;
124
125 return (addr + size) > RMA_START && addr <= fw_dump.boot_memory_size;
126}
127
128int should_fadump_crash(void)
129{
130 if (!fw_dump.dump_registered || !fw_dump.fadumphdr_addr)
131 return 0;
132 return 1;
133}
134
128int is_fadump_active(void)
129{
130 return fw_dump.dump_active;
131}
132
133/*
134 * Returns 1, if there are no holes in boot memory area,
135 * 0 otherwise.

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513 return err;
514}
515
516void crash_fadump(struct pt_regs *regs, const char *str)
517{
518 struct fadump_crash_info_header *fdh = NULL;
519 int old_cpu, this_cpu;
520
135int is_fadump_active(void)
136{
137 return fw_dump.dump_active;
138}
139
140/*
141 * Returns 1, if there are no holes in boot memory area,
142 * 0 otherwise.

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520 return err;
521}
522
523void crash_fadump(struct pt_regs *regs, const char *str)
524{
525 struct fadump_crash_info_header *fdh = NULL;
526 int old_cpu, this_cpu;
527
521 if (!fw_dump.dump_registered || !fw_dump.fadumphdr_addr)
528 if (!should_fadump_crash())
522 return;
523
524 /*
525 * old_cpu == -1 means this is the first CPU which has come here,
526 * go ahead and trigger fadump.
527 *
528 * old_cpu != -1 means some other CPU has already on it's way
529 * to trigger fadump, just keep looping here.

--- 976 unchanged lines hidden --- 		529 return;
530
531 /*
532 * old_cpu == -1 means this is the first CPU which has come here,
533 * go ahead and trigger fadump.
534 *
535 * old_cpu != -1 means some other CPU has already on it's way
536 * to trigger fadump, just keep looping here.

--- 976 unchanged lines hidden ---