If x2apic is enabled, the MSI high address field should also be aslo
updated when setting affinity for MSI IRQ, otherwise the MSI IRQ may
target wrong APIC IDs.
Signed-off-by: Jiang Liu <jiang....@linux.intel.com>
Cc: sta...@vger.kernel.org
---
arch/x86/kernel/apic/io_apic.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 9d0a9795a0f8..2de992501a1b 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3007,6 +3007,10 @@ msi_set_affinity(struct irq_data *data, const struct
cpumask *mask, bool force)
__get_cached_msi_msg(data->msi_desc, &msg);
+ msg.address_hi = MSI_ADDR_BASE_HI;
+ if (x2apic_enabled())
+ msg.address_hi |= MSI_ADDR_EXT_DEST_ID(dest);
+
msg.data &= ~MSI_DATA_VECTOR_MASK;
msg.data |= MSI_DATA_VECTOR(cfg->vector);
msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
--
1.7.10.4
--
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