Skip to content

nVMX injection corrections

Nadav Har'El kvm 1 version Applied

Status from this message: Applied, thanks.

Get series with b4
b4 am [email protected]

Versions newest first

  1. v1 Latest2 patches 4 repliesApplied

Patches in v1 Applied

#Subject and filesSizeRepliesApplied
1/2nVMX: Add KVM_REQ_IMMEDIATE_EXITarch/x86/kvm/vmx.c arch/x86/kvm/x86.c include/linux/kvm_host.h+14 -43 replies
2/2nVMX: Fix warning-causing idt-vectoring-info behaviorarch/x86/kvm/vmx.c+4 -30 replies

Reviews trailers per patch

No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.

Read the v1 thread

Cover letter [PATCH 0/2] nVMX injection corrections

The following two patches solve two injection-related nested VMX issues:

1. When we must run L2 next (namely on L1's VMLAUNCH/VMRESUME), injection into L1 was delayed for an unknown amount of time - until L2 exits. We now force (using a self IPI) an exit immediately after entry to L2, so that the injection into L1 happens promptly.

2. "unexpected, valid vectoring info" warnings appeared in L1.

    These are fixed by correcting the emulation of concurrent L0->L1 and
    L1->L2 injections: We cannot inject into L1 until the injection into L2
    has been processed.

Patch statistics:
-----------------

 arch/x86/kvm/vmx.c       |   18 +++++++++++-------
 arch/x86/kvm/x86.c       |    6 ++++++
 include/linux/kvm_host.h |    1 +
 3 files changed, 18 insertions(+), 7 deletions(-)

--
Nadav Har'El
IBM Haifa Research Lab

Read the cover letter in its thread