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apic: wait for completion before sending ipi

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Matheus
2025-09-13 18:22:27 -03:00
parent efd03bb79c
commit 2454ea8dfb
1 changed files with 1 additions and 1 deletions
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kernel-src/arch/x86-64/apic.c
+1 -1
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@@ -245,9 +245,9 @@ INIT_ROUTINE_DEFINE(arch_timer, INIT_ROUTINE_FLAGS_NONE, arch_apic_timerinit, ti
void arch_apic_sendipi(uint8_t cpu, uint8_t vec, uint8_t dest, uint8_t mode, uint8_t level) { void arch_apic_sendipi(uint8_t cpu, uint8_t vec, uint8_t dest, uint8_t mode, uint8_t level) {
bool status = interrupt_set(false); bool status = interrupt_set(false);
while (readlapic(APIC_REG_ICR_LO) & APIC_REG_ICR_LO_STATUS) CPU_PAUSE();
writelapic(APIC_REG_ICR_HI, (uint32_t)cpu << 24); writelapic(APIC_REG_ICR_HI, (uint32_t)cpu << 24);
writelapic(APIC_REG_ICR_LO, vec | (level << 8) | (mode << 11) | (dest << 18) | (1 << 14)); writelapic(APIC_REG_ICR_LO, vec | (level << 8) | (mode << 11) | (dest << 18) | (1 << 14));
while (readlapic(APIC_REG_ICR_LO) & APIC_REG_ICR_LO_STATUS) CPU_PAUSE();
interrupt_set(status); interrupt_set(status);
} }