KVM: x86: Plumb in the vCPU to kvm_x86_ops.hwapic_isr_update()

Browse source

commit 76bce9f101 upstream.

Pass the target vCPU to the hwapic_isr_update() vendor hook so that VMX
can defer the update until after nested VM-Exit if an EOI for L1's vAPIC
occurs while L2 is active.

Note, commit d39850f57d ("KVM: x86: Drop @vcpu parameter from
kvm_x86_ops.hwapic_isr_update()") removed the parameter with the
justification that doing so "allows for a decent amount of (future)
cleanup in the APIC code", but it's not at all clear what cleanup was
intended, or if it was ever realized.

No functional change intended.

Cc: stable@vger.kernel.org
Reviewed-by: Chao Gao <chao.gao@intel.com>
Tested-by: Chao Gao <chao.gao@intel.com>
Link: https://lore.kernel.org/r/20241128000010.4051275-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Sean Christopherson 2024-11-27 16:00:09 -08:00 • committed by Greg Kroah-Hartman

parent 8eb4d51b44

commit a9e318519b

4 changed files with 8 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/x86/include/asm/kvm_host.h

View file

11

arch/x86/kvm/lapic.c

View file

2

arch/x86/kvm/vmx/vmx.c

View file

2

arch/x86/kvm/vmx/x86_ops.h

View file