• Hari Bathini's avatar
    powerpc/fadump: Fix endianess issues in firmware assisted dump handling · 408cddd9
    Hari Bathini authored
    Firmware-assisted dump (fadump) kernel code is not endian safe. The
    below patch fixes this issue. Tested this patch with upstream kernel.
    Below output shows crash tool successfully opening LE fadump vmcore.
    
        # crash vmlinux vmcore
        GNU gdb (GDB) 7.6
        This GDB was configured as "powerpc64le-unknown-linux-gnu"...
    
              KERNEL: vmlinux
            DUMPFILE: vmcore
        	CPUS: 16
        	DATE: Wed Dec 31 19:00:00 1969
              UPTIME: 00:03:28
        LOAD AVERAGE: 0.46, 0.86, 0.41
               TASKS: 268
            NODENAME: linux-dhr2
             RELEASE: 3.17.0-rc5-7-default
             VERSION: #6 SMP Tue Sep 30 01:06:34 EDT 2014
             MACHINE: ppc64le  (4116 Mhz)
              MEMORY: 40 GB
               PANIC: "Oops: Kernel access of bad area, sig: 11 [#1]" (check log for details)
        	 PID: 6223
             COMMAND: "bash"
        	TASK: c0000009661b2500  [THREAD_INFO: c000000967ac0000]
        	 CPU: 2
               STATE: TASK_RUNNING (PANIC)
    Signed-off-by: default avatarHari Bathini <hbathini@linux.vnet.ibm.com>
    [mpe: Make the comment in pSeries_lpar_hptab_clear() clearer]
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    408cddd9
lpar.c 20 KB