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    Subject[PATCH v8 01/13] KVM: Extend struct pi_desc for VT-d Posted-Interrupts
    Date
    Extend struct pi_desc for VT-d Posted-Interrupts.

    Signed-off-by: Feng Wu <feng.wu@intel.com>
    ---
    arch/x86/kvm/vmx.c | 20 ++++++++++++++++++--
    1 file changed, 18 insertions(+), 2 deletions(-)

    diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
    index 83b7b5c..271dd70 100644
    --- a/arch/x86/kvm/vmx.c
    +++ b/arch/x86/kvm/vmx.c
    @@ -446,8 +446,24 @@ struct nested_vmx {
    /* Posted-Interrupt Descriptor */
    struct pi_desc {
    u32 pir[8]; /* Posted interrupt requested */
    - u32 control; /* bit 0 of control is outstanding notification bit */
    - u32 rsvd[7];
    + union {
    + struct {
    + /* bit 256 - Outstanding Notification */
    + u16 on : 1,
    + /* bit 257 - Suppress Notification */
    + sn : 1,
    + /* bit 271:258 - Reserved */
    + rsvd_1 : 14;
    + /* bit 279:272 - Notification Vector */
    + u8 nv;
    + /* bit 287:280 - Reserved */
    + u8 rsvd_2;
    + /* bit 319:288 - Notification Destination */
    + u32 ndst;
    + };
    + u64 control;
    + };
    + u32 rsvd[6];
    } __aligned(64);

    static bool pi_test_and_set_on(struct pi_desc *pi_desc)
    --
    2.1.0


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