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move idt fixup out of cpu_primary.S

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we will not enable interrupt until interrupt_init, so we can defer idt
fixup and lidt to interrupt_init.

Tracked-On: #1842
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jason Chen CJ
2018-12-06 13:49:05 +08:00
committed by wenlingz
parent 6b42b347d5
commit 27938c3300
2 changed files with 19 additions and 26 deletions
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20
hypervisor/arch/x86/irq.c
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@@ -445,9 +445,24 @@ void init_default_irqs(uint16_t cpu_id)
}
}
static void set_idt(struct host_idt_descriptor *idtd)
static inline void fixup_idt(struct host_idt_descriptor *idtd)
{
int i;
union idt_64_descriptor *idt_desc = (union idt_64_descriptor *)idtd->idt;
uint32_t entry_hi_32, entry_lo_32;
for (i = 0; i < HOST_IDT_ENTRIES; i++) {
entry_lo_32 = idt_desc[i].fields.offset_63_32;
entry_hi_32 = idt_desc[i].fields.rsvd;
idt_desc[i].fields.rsvd = 0U;
idt_desc[i].fields.offset_63_32 = entry_hi_32;
idt_desc[i].fields.high32.bits.offset_31_16 = entry_lo_32 >> 16U;
idt_desc[i].fields.low32.bits.offset_15_0 = entry_lo_32 & 0xffffUL;
}
}
static inline void set_idt(struct host_idt_descriptor *idtd)
{
asm volatile (" lidtq %[idtd]\n" : /* no output parameters */
: /* input parameters */
[idtd] "m"(*idtd));
@@ -457,6 +472,9 @@ void interrupt_init(uint16_t pcpu_id)
{
struct host_idt_descriptor *idtd = &HOST_IDTR;
if (pcpu_id == BOOT_CPU_ID) {
fixup_idt(idtd);
}
set_idt(idtd);
init_lapic(pcpu_id);
init_default_irqs(pcpu_id);