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hv: rework EOI_EXIT_BITMAP update logic

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This commit changes the EOI_EXIT_BITMAP as follows:
- add a eoi_exit_bitmap to vlapic structure;
- go through all the RTEs and set eoi_exit_bitmap in the vlapic structure when related RTE fields are modified;
- add ACRN_REQUEST_EOI_EXIT_UPDATE, if eoi_exit_bitmap changed, request the corresponding vcpu to write the bitmap
  to VMCS.

Tracked-On: #2343
Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yan, Like
2019-01-14 17:20:50 +08:00
committed by wenlingz
parent f15cc7d6de
commit fc61536b07
5 changed files with 150 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
hypervisor/arch/x86/guest/vcpu.c
View File

@@ -166,6 +166,49 @@ void vcpu_set_guest_msr(struct acrn_vcpu *vcpu, uint32_t msr, uint64_t val)
}
}
/*
* Write the eoi_exit_bitmaps to VMCS fields
*/
void vcpu_set_vmcs_eoi_exit(struct acrn_vcpu *vcpu)
{
pr_dbg("%s", __func__);
spinlock_obtain(&(vcpu->arch.lock));
if (is_apicv_intr_delivery_supported()) {
exec_vmwrite64(VMX_EOI_EXIT0_FULL, vcpu->arch.eoi_exit_bitmap[0]);
exec_vmwrite64(VMX_EOI_EXIT1_FULL, vcpu->arch.eoi_exit_bitmap[1]);
exec_vmwrite64(VMX_EOI_EXIT2_FULL, vcpu->arch.eoi_exit_bitmap[2]);
exec_vmwrite64(VMX_EOI_EXIT3_FULL, vcpu->arch.eoi_exit_bitmap[3]);
}
spinlock_release(&(vcpu->arch.lock));
}
/*
* Set the eoi_exit_bitmap bit for specific vector
* called with vcpu->arch.lock held
* @pre vcpu != NULL && vector <= 255U
*/
void vcpu_set_eoi_exit(struct acrn_vcpu *vcpu, uint32_t vector)
{
pr_dbg("%s", __func__);
if (bitmap_test_and_set_nolock((uint16_t)(vector & 0x3fU),
&(vcpu->arch.eoi_exit_bitmap[vector >> 6U]))) {
pr_warn("Duplicated vector %u vcpu%u", vector, vcpu->vcpu_id);
}
}
/*
* Reset all eoi_exit_bitmaps
* called with vcpu->arch.lock held
*/
void vcpu_reset_eoi_exit_all(struct acrn_vcpu *vcpu)
{
pr_dbg("%s", __func__);
memset((void *)(vcpu->arch.eoi_exit_bitmap), 0U, sizeof(vcpu->arch.eoi_exit_bitmap));
}
struct acrn_vcpu *get_ever_run_vcpu(uint16_t pcpu_id)
{
return per_cpu(ever_run_vcpu, pcpu_id);
@@ -379,6 +422,8 @@ int32_t create_vcpu(uint16_t pcpu_id, struct acrn_vm *vm, struct acrn_vcpu **rtn
init_vmtrr(vcpu);
#endif
spinlock_init(&(vcpu->arch.lock));
/* Populate the return handle */
*rtn_vcpu_handle = vcpu;

4
hypervisor/arch/x86/virq.c
View File

@@ -409,6 +409,10 @@ int32_t acrn_handle_pending_request(struct acrn_vcpu *vcpu)
vioapic_update_tmr(vcpu);
}
if (bitmap_test_and_clear_lock(ACRN_REQUEST_EOI_EXIT_UPDATE, pending_req_bits)) {
vcpu_set_vmcs_eoi_exit(vcpu);
}
/* handling cancelled event injection when vcpu is switched out */
if (arch->inject_event_pending) {
if ((arch->inject_info.intr_info & (EXCEPTION_ERROR_CODE_VALID << 8U)) != 0U) {