During ioapic hotplug, acpi_register_ioapic will be called.
Now for x86, that function is blank.
Fill that will update __mp_register_ioapic to use those ioapic.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
---
arch/x86/kernel/acpi/boot.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 0f9c133..77bf505 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -651,16 +651,26 @@ EXPORT_SYMBOL(acpi_unmap_lsapic);
int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
{
- /* TBD */
- return -EINVAL;
+ u64 addr = 0;
+ int apic_id;
+
+ apic_id = acpi_get_ioapic_id(handle, gsi_base, &addr);
+
+ if (apic_id < 0)
+ return -1;
+
+ if (phys_addr != addr)
+ pr_warn("ioapic 0x%02x address is not consistent _CRS/dev(%llx)
_MAT/MADT(%llx) \n",
+ apic_id, phys_addr, addr);
+
+ return __mp_register_ioapic(apic_id, phys_addr, gsi_base, true);
}
EXPORT_SYMBOL(acpi_register_ioapic);
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
{
- /* TBD */
- return -EINVAL;
+ return mp_unregister_ioapic(gsi_base);
}
EXPORT_SYMBOL(acpi_unregister_ioapic);
--
1.8.4
--
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