This series intended to fix (again) a bug that was a subject of the
following change:
6ea6e84 ("KVM: x86: inject exceptions produced by x86_decode_insn")
Suddenly, that fix had a couple mistakes. First, ctxt->have_exception was
not set if fault happened during instruction decoding. Second, returning
value of inject_emulated_instruction was used to make the decision to
reenter guest, but this could happen iff on nested page fault, that is not
the scope where this bug could occur.
v1:
https://lkml.org/lkml/2019/8/27/881
v2:
https://lkml.org/lkml/2019/8/28/879
v3:
- do sanity check in caller code
- drop patch, that moved emulation_type() function
Jan Dakinevich (2):
KVM: x86: always stop emulation on page fault
KVM: x86: set ctxt->have_exception in x86_decode_insn()
arch/x86/kvm/emulate.c | 2 ++
arch/x86/kvm/x86.c | 7 ++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
--
2.1.4
