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uefi: init vlapic according to native lapic

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this patch save native lapic configuration and restore it to vm0's vlapic
before its running, then doing hpet timer interrupt injection through vlapic
interface -- this will not mess up vlapic and we can see hpet
timer interrupt coming continuously.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Jason Chen CJ
2018-03-20 03:49:46 +08:00
committed by Jack Ren
parent a87757d602
commit fcb95d02d6
7 changed files with 100 additions and 2 deletions
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24
hypervisor/bsp/uefi/uefi.c
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@@ -56,11 +56,28 @@
uint32_t efi_physical_available_ap_bitmap = 0;
uint32_t efi_wake_up_ap_bitmap = 0;
struct efi_ctx* efi_ctx = NULL;
struct lapic_regs uefi_lapic_regs;
extern uint32_t up_count;
extern unsigned long pcpu_sync;
void efi_spurious_handler(int vector)
{
struct vcpu* vcpu;
int ret;
if (get_cpu_id() != 0)
return;
vcpu = per_cpu(vcpu, 0);
if (vcpu && vcpu->arch_vcpu.vlapic) {
ret = vlapic_set_intr(vcpu, vector, 0);
if (ret)
pr_err("%s vlapic set intr fail, interrupt lost\n",
__func__);
} else
pr_err("%s vcpu or vlapic is not ready, interrupt lost\n",
__func__);
return;
}
@@ -116,10 +133,15 @@ int uefi_sw_loader(struct vm *vm, struct vcpu *vcpu)
if (!is_vm0(vm))
return load_guest(vm, vcpu);
vlapic_restore(vcpu->arch_vcpu.vlapic, &uefi_lapic_regs);
vcpu->entry_addr = efi_ctx->entry;
cur_context->guest_cpu_regs.regs.rcx = efi_ctx->handle;
cur_context->guest_cpu_regs.regs.rdx = efi_ctx->table;
/* defer irq enabling till vlapic is ready */
CPU_IRQ_ENABLE();
return ret;
}
#endif
@@ -135,5 +157,7 @@ void init_bsp(void)
vm_sw_loader = uefi_sw_loader;
spurious_handler = efi_spurious_handler;
save_lapic(&uefi_lapic_regs);
#endif
}