These are boring patches. They're a cleanup, and something like them is
mandatory if we want to wean the 64-bit #DB handler off IST.
The latter will be useful if we want to eliminate the IST reprogramming
that we during NMIs unless we ban #DB outright inside NMIs. Even if we
ban #DB inside NMI, it'll still be nice to get reduce IST usage to the
bare minimum.
Andy Lutomirski (5):
x86/entry/32: Clean up enable_sep_cpu to prepare for 64-bit merge
x86/entry/64, entry: Set up a valid sysenter stack and prepare for
32-bit merge
x86/entry: Merge 32-bit and 64-bit sysenter setup code
x86/entry: Only allocate space for SYSENTER_stack if needed
x86/entry: Replace SWAPGS_UNSAFE_STACK with SWAPGS in
entry_SYSENTER_compat
arch/x86/entry/entry_64_compat.S | 2 +-
arch/x86/include/asm/processor.h | 2 ++
arch/x86/kernel/cpu/common.c | 44 ++++++++++++++++++++++------------------
3 files changed, 27 insertions(+), 21 deletions(-)
--
2.4.3
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