commit: 086e8ced65d9bcc4a8e8f1cd39b09640f2883f90 From: Kenji Kaneshige <[email protected]> Date: Wed, 1 Dec 2010 09:40:32 -0800 Subject: [PATCH] x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode
In x2apic mode, we need to set the upper address register of the fault handling interrupt register of the vt-d hardware. Without this irq migration of the vt-d fault handling interrupt is broken. Signed-off-by: Kenji Kaneshige <[email protected]> LKML-Reference: <1291225233.2648.39.ca...@sbsiddha-mobl3> Signed-off-by: Suresh Siddha <[email protected]> Cc: [email protected] [v2.6.32+] Acked-by: Chris Wright <[email protected]> Tested-by: Takao Indoh <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]> --- arch/x86/kernel/apic/io_apic.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 226060e..fadcd74 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3412,6 +3412,7 @@ dmar_msi_set_affinity(struct irq_data *data, const struct cpumask *mask, msg.data |= MSI_DATA_VECTOR(cfg->vector); msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK; msg.address_lo |= MSI_ADDR_DEST_ID(dest); + msg.address_hi = MSI_ADDR_BASE_HI | MSI_ADDR_EXT_DEST_ID(dest); dmar_msi_write(irq, &msg); _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
