KVM: nVMX: Switch to vmcs01 to update SVI on-demand if L2 is active

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If APICv is activated while L2 is running and triggers an SVI update,
temporarily load vmcs01 and immediately update SVI instead of deferring
the update until the next nested VM-Exit.  This will eventually allow
killing off kvm_apic_update_hwapic_isr(), and all of nVMX's deferred
APICv updates.

Reviewed-by: Chao Gao <chao.gao@intel.com>
Link: https://patch.msgid.link/20260109034532.1012993-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2026-01-08 19:45:28 -08:00

parent 51ca274607

commit f0044429b2

3 changed files with 7 additions and 18 deletions

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5

arch/x86/kvm/vmx/nested.c

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19

arch/x86/kvm/vmx/vmx.c

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1

arch/x86/kvm/vmx/vmx.h

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