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    Subject[PATCH v2 0/2] Rewrite ret_from_fork() in C
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    When kCFI is enabled, special handling is needed for the indirect call
    to the kernel thread function. Handling this in pure assembly is not
    simple, so moving it to C is more appropriate. Instead of moving just
    the indirect call to C as Peter Zijlstra has proposed, this patchset
    rewrites the whole ret_from_fork() function in C (other than some
    necessary asm glue remaning).

    V2:
    - Fixed wrong address of pt_regs being passed
    - Simplified 64-bit asm stub to not use a tail-call

    Brian Gerst (2):
    x86/32: Remove schedule_tail_wrapper()
    x86: Rewrite ret_from_fork() in C

    arch/x86/entry/entry_32.S | 53 ++++++++------------------------
    arch/x86/entry/entry_64.S | 33 +++++---------------
    arch/x86/include/asm/switch_to.h | 4 ++-
    arch/x86/kernel/process.c | 22 ++++++++++++-
    4 files changed, 45 insertions(+), 67 deletions(-)

    --
    2.41.0

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