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[v2,1/4] x86/PCI: Show the physical address of the $PIR table

Message ID alpine.DEB.2.21.2201020151450.56863@angie.orcam.me.uk (mailing list archive)
State Superseded
Delegated to: Bjorn Helgaas
Headers show
Series x86/PCI: Odd generic PIRQ router improvements | expand

Commit Message

Maciej W. Rozycki Jan. 2, 2022, 11:24 p.m. UTC
It makes no sense to hide the address of the $PIR table in a debug dump:

PCI: Interrupt Routing Table found at 0x(ptrval)

let alone print its virtual address, given that this is a BIOS entity at 
a fixed location in the system's memory map.  Show the physical address 
instead then, e.g.:

PCI: Interrupt Routing Table found at 0xfde10

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
---
No change from v1.
---
 arch/x86/pci/irq.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

linux-x86-debug-pirq-addr.diff
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Patch

Index: linux-macro/arch/x86/pci/irq.c
===================================================================
--- linux-macro.orig/arch/x86/pci/irq.c
+++ linux-macro/arch/x86/pci/irq.c
@@ -84,8 +84,8 @@  static inline struct irq_routing_table *
 	for (i = 0; i < rt->size; i++)
 		sum += addr[i];
 	if (!sum) {
-		DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n",
-			rt);
+		DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%lx\n",
+		    __pa(rt));
 		return rt;
 	}
 	return NULL;