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527f0a91e9
linux_dsm_epyc7002/arch/x86/kernel/apic
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Jiang Liu 527f0a91e9 x86/irq: Build correct vector mapping for multiple MSI interrupts 
Alex Deucher, Mark Rustad and Alexander Holler reported a regression
with the latest v4.2-rc4 kernel, which breaks some SATA controllers.
With multi-MSI capable SATA controllers, only the first port works,
all other ports time out when executing SATA commands.

This happens because the first argument to assign_irq_vector_policy()
is always the base linux irq number of the multi MSI interrupt block,
so all subsequent vector assignments operate on the base linux irq
number, so all MSI irqs are handled as the first irq number. Therefor
the other MSI irqs of a device are never set up correctly and never
fire.

Add the loop iterator to the base irq number so all vectors are
assigned correctly.

Fixes: b5dc8e6c21 "x86/irq: Use hierarchical irqdomain to manage CPU interrupt vectors"
Reported-and-tested-by: Alex Deucher <alexdeucher@gmail.com>
Reported-and-tested-by: Mark Rustad <mrustad@gmail.com>
Reported-and-tested-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1439911228-9880-1-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-08-18 18:18:55 +02:00
..
apic_flat_64.c x86, apic: Remove enable_apic_mode callback 2014-07-31 08:05:44 -07:00
apic_noop.c x86, apic: Remove enable_apic_mode callback 2014-07-31 08:05:44 -07:00
apic_numachip.c x86/apic/numachip: Fix sibling map with NumaChip 2015-03-12 16:58:59 +01:00
apic.c x86/apic: Remove verify_local_APIC() 2015-04-01 10:47:57 +02:00
bigsmp_32.c x86, apic: Remove enable_apic_mode callback 2014-07-31 08:05:44 -07:00
htirq.c x86: Constify irqdomain ops 2015-05-05 11:14:48 +02:00
hw_nmi.c x86/nmi: Fix use of unallocated cpumask_var_t 2014-11-25 14:15:30 -05:00
io_apic.c x86/irq: Use the caller provided polarity setting in mp_check_pin_attr() 2015-07-30 21:15:29 +02:00
ipi.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
Makefile x86, irq: Move HT IRQ related code from io_apic.c into htirq.c 2014-12-16 14:08:17 +01:00
msi.c x86/irq/msi: Implement irq_set_vcpu_affinity for remapped MSI irqs 2015-05-19 15:51:17 +02:00
probe_32.c x86, apic: Remove enable_apic_mode callback 2014-07-31 08:05:44 -07:00
probe_64.c x86/platform: Introduce APIC post-initialization callback 2012-06-06 09:06:19 +02:00
vector.c x86/irq: Build correct vector mapping for multiple MSI interrupts 2015-08-18 18:18:55 +02:00
x2apic_cluster.c x86: fix more deprecated cpu function usage. 2015-03-10 13:54:40 +10:30
x2apic_phys.c x86/x2apic: Acpi_gbl_FADT existence depends on CONFIG_ACPI 2015-05-05 14:01:37 +02:00
x2apic_uv_x.c x86/apic/uv: Update the UV APIC HUB check 2015-04-10 10:16:08 +02:00