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[00/10] powerpc/64s/exception: initial reworking of

Message ID 20190821122315.9535-1-npiggin@gmail.com (mailing list archive)
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Series powerpc/64s/exception: initial reworking of | expand

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Nicholas Piggin Aug. 21, 2019, 12:23 p.m. UTC 
This applies on top of the previous exception series.

Until now the focus was on making the code generation macros sane,
ironing out irregularities and needless differences in handlers,
and sharing code. Some change of generated code was required, but
minimised as much as possible.

This series begins to change generated code in a bigger way. This is
an assortment of changes, one of the big goals goals is really moving
code and especially branches and logic and conditional compilation
out of "unrelocated" interrupt entry points, with the hope of making
KASLR more effective when it is implemented.

After this is a more significant rework of the instruction sequences
with the aim of improving performance, but I will stop here for the
next merge window.

Thanks,
Nick

Nicholas Piggin (10):
  powerpc/64s/exception: Add ISIDE option
  powerpc/64s/exception: move real->virt switch into the common handler
  powerpc/64s/exception: move soft-mask test to common code
  powerpc/64s/exception: move KVM test to common code
  powerpc/64s/exception: remove confusing IEARLY option
  powerpc/64s/exception: remove the SPR saving patch code macros
  powerpc/64s/exception: trim unused arguments from KVMTEST macro
  powerpc/64s/exception: hdecrementer avoid touching the stack
  powerpc/64s/exception: re-inline some handlers
  powerpc/64s/exception: add more comments for interrupt handlers

 arch/powerpc/include/asm/exception-64s.h |    4 -
 arch/powerpc/include/asm/time.h          |    1 -
 arch/powerpc/kernel/exceptions-64s.S     | 1151 ++++++++++++++--------
 arch/powerpc/kernel/time.c               |    9 -
 arch/powerpc/kvm/book3s_hv_rmhandlers.S  |   11 -
 arch/powerpc/kvm/book3s_segment.S        |    7 -
 6 files changed, 716 insertions(+), 467 deletions(-)