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authorThiago Jung Bauermann <bauerman@linux.vnet.ibm.com>2016-11-29 13:45:51 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2016-11-30 13:15:25 +0100
commita0458284f0625ade5eff2118bab89b2d4bbacc3e (patch)
tree0f14a6905e9882dfec5158fafbcf122da8ea8512 /block
parentpowerpc: Change places using CONFIG_KEXEC to use CONFIG_KEXEC_CORE instead. (diff)
downloadlinux-a0458284f0625ade5eff2118bab89b2d4bbacc3e.tar.xz
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powerpc: Add support code for kexec_file_load()
This patch adds the support code needed for implementing kexec_file_load() on powerpc. This consists of functions to load the ELF kernel, either big or little endian, and setup the purgatory enviroment which switches from the first kernel to the second kernel. None of this code is built yet, as it depends on CONFIG_KEXEC_FILE which we have not yet defined. Although we could define CONFIG_KEXEC_FILE in this patch, we'd then have a window in history where the kconfig symbol is present but the syscall is not, which would be awkward. Signed-off-by: Josh Sklar <sklar@linux.vnet.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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