* Russell King <rmk+kernel@xxxxxxxxxxxxxxx> [180601 11:02]: > Executing loops such as: > > while (1) > cpu_relax(); > > with interrupts disabled results in a livelock of the entire system, > as other CPUs are prevented making progress. This is most noticable > as a failure of crashdump kexec, which stops just after issuing: > > Loading crashdump kernel... > > to the system console. Two other locations of these loops within the > ARM code have been identified and fixed up. > > Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Works for me thanks: Tested-by: Tony Lindgren <tony@xxxxxxxxxxx> BTW, do LZMA crashkernels boot for you with crashdump? For me LZMA crashkernels fail to boot while GZIP crashkernels boots. Some more info below for failing and working output. Regards, Tony 8< ---------------------- CONFIG_KERNEL_LZMA fails: Try gzip decompression. Try LZMA decompression. lzma_decompress_file: read on /boot/zImage of 65536 bytes failed kernel: 0xb6abb010 kernel_size: 0x43d0f0 MEMORY RANGES 0000000080000000-00000000bfdfffff (0) zImage header: 0x016f2818 0x00000000 0x0043d0f0 zImage size 0x43d0f0, file size 0x43d0f0 Reserved memory ranges 00000000a8000000-00000000abffffff (0) Coredump memory ranges 0000000080000000-00000000a7ffffff (0) 00000000ac000000-00000000bfdfffff (0) kernel symbol _stext vaddr = c0100000 phys offset = 0x80000000, page offset = c0000000 Using 32-bit ELF core format get_crash_notes_per_cpu: crash_notes addr = be001200, size = 180 Elf header: p_type = 4, p_offset = 0xbe001200 p_paddr = 0xbe001200 p_vaddr = 0x0 p_filesz = 0xb4 p_memsz = 0xb4 get_crash_notes_per_cpu: crash_notes addr = be002200, size = 180 Elf header: p_type = 4, p_offset = 0xbe002200 p_paddr = 0xbe002200 p_vaddr = 0x0 p_filesz = 0xb4 p_memsz = 0xb4 vmcoreinfo header: p_type = 4, p_offset = 0xaeae2000 p_paddr = 0xaeae2000 p_vaddr = 0x0 p_filesz = 0x1024 p_memsz = 0x1024 Elf header: p_type = 1, p_offset = 0x80000000 p_paddr = 0x80000000 p_vaddr = 0xc0000000 p_filesz = 0x28000000 p_memsz = 0x2800 0000 Elf header: p_type = 1, p_offset = 0xac000000 p_paddr = 0xac000000 p_vaddr = 0xec000000 p_filesz = 0x13e00000 p_memsz = 0x13e0 0000 elfcorehdr: 0xabf00000 crashkernel: [0xa8000000 - 0xabffffff] (64M) memory range: [0x80000000 - 0xa7ffffff] (640M) memory range: [0xac000000 - 0xbfdfffff] (318M) kernel command line: "console=ttyS2,115200n8 root=/dev/nfs ip=dhcp debug earlyprintk earlycon crashkernel=64M elfcorehdr=0xabf 00000 mem=64512K" kexec_load: entry = 0xa8008000 flags = 0x280001 nr_segments = 3 segment[0].buf = 0xb6abb010 segment[0].bufsz = 0x43d0f0 segment[0].mem = 0xa8008000 segment[0].memsz = 0x43e000 segment[1].buf = 0x53dc80 segment[1].bufsz = 0x128da segment[1].mem = 0xa953b000 segment[1].memsz = 0x13000 segment[2].buf = 0xb6fe8150 segment[2].bufsz = 0x400 segment[2].mem = 0xabf00000 segment[2].memsz = 0x1000 CONFIG_KERNEL_GZIP Works: Try gzip decompression. Try LZMA decompression. lzma_decompress_file: read on /boot/zImage of 65536 bytes failed kernel: 0xb693f010 kernel_size: 0x5c74a8 MEMORY RANGES 0000000080000000-00000000bfdfffff (0) zImage header: 0x016f2818 0x00000000 0x005c74a8 zImage size 0x5c74a8, file size 0x5c74a8 Reserved memory ranges 00000000a8000000-00000000abffffff (0) Coredump memory ranges 0000000080000000-00000000a7ffffff (0) 00000000ac000000-00000000bfdfffff (0) kernel symbol _stext vaddr = c0100000 phys offset = 0x80000000, page offset = c0000000 Using 32-bit ELF core format get_crash_notes_per_cpu: crash_notes addr = be001200, size = 180 Elf header: p_type = 4, p_offset = 0xbe001200 p_paddr = 0xbe001200 p_vaddr = 0x0 p_filesz = 0xb4 p_memsz = 0xb4 get_crash_notes_per_cpu: crash_notes addr = be002200, size = 180 Elf header: p_type = 4, p_offset = 0xbe002200 p_paddr = 0xbe002200 p_vaddr = 0x0 p_filesz = 0xb4 p_memsz = 0xb4 vmcoreinfo header: p_type = 4, p_offset = 0xaeae2000 p_paddr = 0xaeae2000 p_vaddr = 0x0 p_filesz = 0x1024 p_memsz = 0x1024 Elf header: p_type = 1, p_offset = 0x80000000 p_paddr = 0x80000000 p_vaddr = 0xc0000000 p_filesz = 0x28000000 p_memsz = 0x28000000 Elf header: p_type = 1, p_offset = 0xac000000 p_paddr = 0xac000000 p_vaddr = 0xec000000 p_filesz = 0x13e00000 p_memsz = 0x13e00000 elfcorehdr: 0xabf00000 crashkernel: [0xa8000000 - 0xabffffff] (64M) memory range: [0x80000000 - 0xa7ffffff] (640M) memory range: [0xac000000 - 0xbfdfffff] (318M) kernel command line: "console=ttyS2,115200n8 root=/dev/nfs ip=dhcp debug earlyprintk earlycon crashkernel=64M elfcorehdr=0xabf00000 mem=64512K" kexec_load: entry = 0xa8008000 flags = 0x280001 nr_segments = 3 segment[0].buf = 0xb693f010 segment[0].bufsz = 0x5c74a8 segment[0].mem = 0xa8008000 segment[0].memsz = 0x5c8000 segment[1].buf = 0x476c80 segment[1].bufsz = 0x128da segment[1].mem = 0xa9cee000 segment[1].memsz = 0x13000 segment[2].buf = 0xb6ff6150 segment[2].bufsz = 0x400 segment[2].mem = 0xabf00000 segment[2].memsz = 0x1000 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
