Changes since RFC (It's been awhile and I apologize for that):
- Dropped ' + 3' from vmrun_interception() as well.
- Added xsetbv's implementation to the emulator [Paolo Bonzini]
- Added Jim's R-b tags to PATCHes 2 and 3.
- Tested with the newly added 'nrips' svm module parameter.
Original description:
Jim rightfully complains that hardcoding instuctions lengths is not always
correct: additional (redundant) prefixes can be used. Luckily, the ugliness
is mostly harmless: modern AMD CPUs support NRIP_SAVE feature but I'd like
to clean things up and sacrifice speed in favor of correctness.
Vitaly Kuznetsov (5):
x86: KVM: svm: don't pretend to advance RIP in case
wrmsr_interception() results in #GP
x86: KVM: svm: avoid flooding logs when skip_emulated_instruction()
fails
x86: KVM: svm: clear interrupt shadow on all paths in
skip_emulated_instruction()
x86: KVM: add xsetbv to the emulator
x86: KVM: svm: remove hardcoded instruction length from intercepts
arch/x86/include/asm/kvm_emulate.h | 3 ++-
arch/x86/kvm/emulate.c | 23 ++++++++++++++++++++++-
arch/x86/kvm/svm.c | 23 ++++++++---------------
arch/x86/kvm/x86.c | 6 ++++++
4 files changed, 38 insertions(+), 17 deletions(-)
--
2.20.1
