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7c64e21a1c
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Hari Bathini 7c64e21a1c powerpc/kexec_file: Restrict memory usage of kdump kernel 
Kdump kernel, used for capturing the kernel core image, is supposed
to use only specific memory regions to avoid corrupting the image to
be captured. The regions are crashkernel range - the memory reserved
explicitly for kdump kernel, memory used for the tce-table, the OPAL
region and RTAS region as applicable. Restrict kdump kernel memory
to use only these regions by setting up usable-memory DT property.
Also, tell the kdump kernel to run at the loaded address by setting
the magic word at 0x5c.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Tested-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/159602284284.575379.6962016255404325493.stgit@hbathini
2020-07-29 23:47:54 +10:00
..
boot powerpc/fsl/dts: add missing P4080DS I2C devices 2020-07-29 23:47:52 +10:00
configs powerpc/configs: Add BLK_DEV_NVME to pseries_defconfig 2020-07-29 23:47:53 +10:00
crypto powerpc: Replace HTTP links with HTTPS ones 2020-07-22 00:01:23 +10:00
include powerpc/drmem: Make LMB walk a bit more flexible 2020-07-29 23:47:54 +10:00
kernel powerpc/drmem: Make LMB walk a bit more flexible 2020-07-29 23:47:54 +10:00
kexec powerpc/kexec_file: Restrict memory usage of kdump kernel 2020-07-29 23:47:54 +10:00
kvm powerpc/64s: Move HMI IRQ stat from percpu variable to paca. 2020-07-29 23:47:53 +10:00
lib powerpc/test_emulate_step: Add testcases for divde[.] and divdeu[.] instructions 2020-07-29 23:47:52 +10:00
math-emu
mm powerpc/drmem: Make LMB walk a bit more flexible 2020-07-29 23:47:54 +10:00
net powerpc/ppc-opcode: Consolidate powerpc instructions from bpf_jit.h 2020-07-16 13:12:42 +10:00
oprofile maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault 2020-06-17 10:57:41 -07:00
perf powerpc/perf: BHRB control to disable BHRB logic when not used 2020-07-22 21:56:42 +10:00
platforms powerpc/powernv/sriov: Remove unused but set variable 'phb' 2020-07-29 22:30:34 +10:00
purgatory powerpc/kexec_file: Mark PPC64 specific code 2020-07-29 23:47:53 +10:00
sysdev powerpc/xive: Ignore kmemleak false positives 2020-06-22 10:37:57 +10:00
tools powerpc/64s: allow for clang's objdump differences 2020-07-27 00:01:29 +10:00
xmon powerpc: Use fallthrough pseudo-keyword 2020-07-29 21:09:37 +10:00
Kbuild powerpc/kexec: Move kexec files into a dedicated subdir. 2019-11-21 15:41:34 +11:00
Kconfig powerpc/32s: Use dedicated segment for modules with STRICT_KERNEL_RWX 2020-07-27 00:01:30 +10:00
Kconfig.debug powerpc: Remove Xilinx PPC405/PPC440 support 2020-05-28 23:24:34 +10:00
Makefile powerpc/4xx: ppc4xx compile flag optimizations 2020-06-22 14:19:12 +10:00
Makefile.postlink powerpc: Do not consider weak unresolved symbol relocations as bad 2020-01-31 20:17:22 +11:00