[PATCH 0/10] KVM: Nested SVM fixes and tracepoint conversion

[Joerg Roedel <joerg.roedel@amd.com>]

Hi Avi, Marcelo,

this series of patches contains bugfixes for the Nested SVM code and the
conversion of Nested SVM debugging to tracepoints. The fixes are:

	1) A patch Alex already sent (1/10) but which was not yet
	   applied. It fixes a lost event_inj problem when we emulate
	   a vmrun and a vmexit without entering the guest in
	   the meantime.

	2) The patches 2/10 and 3/10 fixing a schedule() while atomic
	   bug in the Nested SVM code. The KVM interrupt injection code
	   runs with preemtion and interrupts disabled. But the
	   enable_irq_window() function from SVM may emulate a #vmexit.
	   This emulation migth sleep which causes the schedule() while
	   atomic() bug.

These fixes (patches 1 to 3) should also be considered for -stable
backporting.

The patches 3 to 9 convert the old printk based debugging for Nested
SVM to tracepoints. Patch 10 removes the nsvm_printk code. Please review
and/or consider to apply these changes.

Thanks,

	Joerg

diffstat:

 arch/x86/include/asm/kvm_host.h |    1 +
 arch/x86/kvm/svm.c              |   98 +++++++++++++++---------
 arch/x86/kvm/trace.h            |  165 +++++++++++++++++++++++++++++++++++++++
 arch/x86/kvm/x86.c              |   23 ++++++
 include/linux/kvm_host.h        |    1 +
 5 files changed, 252 insertions(+), 36 deletions(-)

shortlog:

Alexander Graf (1):
      KVM: SVM: Notify nested hypervisor of lost event injections

Joerg Roedel (9):
      KVM: X86: Add KVM_REQ_VMEXIT to trigger a nested #vmexit
      KVM: SVM: Move nested INTR #vmexit into preemtible code
      KVM: SVM: Add tracepoint for nested vmrun
      KVM: SVM: Add tracepoint for nested #vmexit
      KVM: SVM: Add tracepoint for injected #vmexit
      KVM: SVM: Add tracepoint for #vmexit because intr pending
      KVM: SVM: Add tracepoint for invlpga instruction
      KVM: SVM: Add tracepoint for skinit instruction
      KVM: SVM: Remove nsvm_printk debugging code