On 24/03/16 22:04, Michael Ellerman wrote: > In order to support live patching we need to maintain an alternate > stack of TOC & LR values. We use the base of the stack for this, and > store the "live patch stack pointer" in struct thread_info. > > Unlike the other fields of thread_info, we can not statically initialise > that value, so it must be done at run time. > > This patch just adds the code to support that, it is not enabled until > the next patch which actually adds live patch support. > > Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> > --- > arch/powerpc/include/asm/livepatch.h | 8 ++++++++ > arch/powerpc/include/asm/thread_info.h | 4 +++- > arch/powerpc/kernel/irq.c | 3 +++ > arch/powerpc/kernel/process.c | 6 +++++- > arch/powerpc/kernel/setup_64.c | 17 ++++++++++------- > 5 files changed, 29 insertions(+), 9 deletions(-) > > Acked-by: Balbir Singh <bsingharora@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
