[PATCH] PCI: Change MSI to use physical delivery mode always

MSI hardcoded delivery mode to use logical delivery mode. Recently
x86_64 moved to use physical mode addressing to support physflat mode.
With this mode enabled noticed that my eth with MSI werent working.

msi_address_init()  was hardcoded to use logical mode for i386 and x86_64.
So when we switch to use physical mode, things stopped working.

Since anyway we dont use lowest priority delivery with MSI, its always
directed to just a single CPU. Its safe  and simpler to use
physical mode always, even when we use logical delivery mode for IPI's
or other ioapic RTE's.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h
index 13250199976d..61d3ab9db70c 100644
--- a/include/asm-i386/smp.h
+++ b/include/asm-i386/smp.h
@@ -45,6 +45,8 @@ extern void unlock_ipi_call_lock(void);
 #define MAX_APICID 256
 extern u8 x86_cpu_to_apicid[];
 
+#define cpu_physical_id(cpu)    x86_cpu_to_apicid[cpu]
+
 #ifdef CONFIG_HOTPLUG_CPU
 extern void cpu_exit_clear(void);
 extern void cpu_uninit(void);
@@ -92,6 +94,10 @@ extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
 #endif /* !__ASSEMBLY__ */
 
+#else /* CONFIG_SMP */
+
+#define cpu_physical_id(cpu)            boot_cpu_physical_apicid
+
 #define NO_PROC_ID              0xFF            /* No processor magic marker */
 
 #endif