This series realizes the debug register switch optimization Avi
suggested, but now in a KGDB-safe way. It furthermore cleans up the DR6
optimization as discussed earlier. And it improves the debug register
emulation for both VMX and SVM.
Note that the series applies on top of kvm.git next.
Find this series also at git://git.kiszka.org/linux-kvm.git queues/debugregs
Jan Kiszka (6):
KGDB: Add kgdb_in_use
KVM: x86: Optimize debug register switching
KVM: VMX: Clean up DR6 emulation
KVM: VMX: Fix emulation of DR4 and DR5
KVM: SVM: Enable full MOV DR emulation
KVM: SVM: Trap all debug register accesses
arch/x86/include/asm/kvm_host.h | 5 +-
arch/x86/kvm/svm.c | 86 ++++++++++++++++++++++++--------------
arch/x86/kvm/vmx.c | 55 ++++++++++++++----------
arch/x86/kvm/x86.c | 67 ++++++++++++++++--------------
include/linux/kgdb.h | 17 ++++++++
5 files changed, 140 insertions(+), 90 deletions(-)
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