KVM: X86: Implement PV IPIs in linux guest

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Implement paravirtual apic hooks to enable PV IPIs for KVM if the "send IPI"
hypercall is available.  The hypercall lets a guest send IPIs, with
at most 128 destinations per hypercall in 64-bit mode and 64 vCPUs per
hypercall in 32-bit mode.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Wanpeng Li 2018-07-23 14:39:52 +08:00 • committed by Paolo Bonzini

parent d63bae079b

commit aaffcfd1e8

3 changed files with 98 additions and 0 deletions

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arch/x86/include/uapi/asm/kvm_para.h

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96

arch/x86/kernel/kvm.c

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include/uapi/linux/kvm_para.h

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