Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1368921

Re: [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct thread_info

Show all headers | View raw

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@ellerman.id.au>
> ---
>  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@gmail.com>

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH HACK 1/6] livepatch-test: Add more cases Michael Ellerman <mpe@ellerman.id.au> - 2016-03-24 12:10 +0100
  [PATCH 4/6] powerpc/livepatch: Add livepatch header Michael Ellerman <mpe@ellerman.id.au> - 2016-03-24 12:10 +0100
  [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct thread_info Michael Ellerman <mpe@ellerman.id.au> - 2016-03-24 12:10 +0100
    Re: [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct  thread_info Balbir Singh <bsingharora@gmail.com> - 2016-03-29 02:10 +0200
      Re: [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct  thread_info Michael Ellerman <mpe@ellerman.id.au> - 2016-03-29 07:20 +0200
        Re: [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct  thread_info Balbir Singh <bsingharora@gmail.com> - 2016-03-29 07:50 +0200
    Re: [PATCH 5/6] powerpc/livepatch: Add livepatch stack to struct  thread_info Balbir Singh <bsingharora@gmail.com> - 2016-04-01 03:10 +0200
  [PATCH 6/6] powerpc/livepatch: Add live patching support on ppc64le Michael Ellerman <mpe@ellerman.id.au> - 2016-03-24 12:10 +0100
    Re: [PATCH 6/6] powerpc/livepatch: Add live patching support on  ppc64le Torsten Duwe <duwe@lst.de> - 2016-03-24 14:50 +0100
      Re: [PATCH 6/6] powerpc/livepatch: Add live patching support on  ppc64le Michael Ellerman <mpe@ellerman.id.au> - 2016-03-29 07:30 +0200
    Re: [PATCH 6/6] powerpc/livepatch: Add live patching support on  ppc64le Balbir Singh <bsingharora@gmail.com> - 2016-04-01 03:20 +0200
  [PATCH 2/6] ftrace: Make ftrace_location_range() global Michael Ellerman <mpe@ellerman.id.au> - 2016-03-24 12:10 +0100
    Re: [PATCH 2/6] ftrace: Make ftrace_location_range() global Steven Rostedt <rostedt@goodmis.org> - 2016-03-24 16:30 +0100
      Re: [PATCH 2/6] ftrace: Make ftrace_location_range() global Jiri Kosina <jikos@kernel.org> - 2016-03-24 16:30 +0100
      Re: [PATCH 2/6] ftrace: Make ftrace_location_range() global Michael Ellerman <mpe@ellerman.id.au> - 2016-03-25 11:30 +0100
  Re: [PATCH HACK 1/6] livepatch-test: Add more cases Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> - 2016-03-24 17:40 +0100
    Re: [PATCH HACK 1/6] livepatch-test: Add more cases Balbir Singh <bsingharora@gmail.com> - 2016-03-26 08:20 +0100
      Re: [PATCH HACK 1/6] livepatch-test: Add more cases Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> - 2016-03-28 07:00 +0200

csiph-web